APPLICATIO S TYPICAL APPLICATIO. LT6000/LT6001/LT6002 Single, Dual and Quad, 1.8V, 13µA Precision Rail-to-Rail Op Amps FEATURES DESCRIPTIO

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1

600012fa

APPLICATIO S

U

TYPICAL APPLICATIO

U

FEATURES

DESCRIPTIO

U

■

Gas Sensing

■

Portable Instrumentation

■

Battery- or Solar-Powered Systems

■

Low Voltage Signal Processing

■

Micropower Active Filters

■

Ideal for Battery-Powered Applications

– Low Voltage: 1.8V to 16V Operation

– Low Current: 16

µ

A/Amplifier Max

– Small Packages: DFN, MSOP, SSOP

– Shutdown to 1.5

µA Max (LT6000, LT6001DD)

■

Low Offset Voltage: 600

µV Max

■

Rail-to-Rail Input and Output

■

Fully Specified on 1.8V and 5V Supplies

■

Operating Temperature Range: –40

°C to 85°C

■

Single Available in DFN

Dual Available in MSOP and DFN

Quad Available in SSOP and DFN

Single, Dual and Quad,

1.8V, 13

µA Precision

Rail-to-Rail Op Amps

, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

The LT

®

6000/LT6001/LT6002 are single, dual and quad

precision rail-to-rail input and output operational

amplifi-ers. Designed to maximize battery life in always-on

appli-cations, the devices will operate on supplies down to 1.8V

while drawing only 13µA quiescient current. The low

supply current and low voltage operation is combined with

precision specifications; input offset is guaranteed less

than 600µV. The performance on 1.8V supplies is fully

specified and guaranteed over temperature. A shutdown

feature available in the LT6000 and the 10-lead dual

LT6001 version can be used to extend battery life by

allowing the amplifiers to be switched off during periods

of inactivity.

The LT6000 is available in a tiny, dual fine pitch leadless

DFN package. The LT6001 is available in the 8-pin MSOP

package; a 10-lead version with the shutdown feature is

available in DFN package. The quad LT6002 is available in

the 16-pin SSOP package and the 16-pin DFN package.

These devices are specified over the commercial and

industrial temperature range.

–

+

–VE 100Ω 330Ω VOUT = 1V IN AIR, 0V WITHOUT OXYGEN 330Ω

+

–

10k OXYGEN SENSOR CITY TECHNOLOGY 40X(2) www.citytech.com +VE 1/2 LT6001 200k VS = 1.8V

ISUPPLY = 145µA IN AIR, 45µA WITHOUT OXYGEN VS

VS

20k 60012 TA01a

–

+

1/2 LT6001

Micropower Oxygen Sensor

Start-Up Characteristics

Supply Current vs Supply Voltage

TOTAL SUPPLY VOLTAGE (V) 0.4

0

SUPPLY CURRENT PER AMPLIFIER (

µ A) 10 25 0.8 1.2 1.4 60012 TA01b 5 20 15 0.6 1.0 1.6 1.8 2.0 AV = 1 VCM = 0.5V TA = 125°C TA = 25°C TA = –55°C

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2

DCB PART

MARKING*

ABSOLUTE AXI U

W

RATI GS

U

(Note 1)

Total Supply Voltage (V

+

to V

–

) ... 18V

Input Current ...

±10mA

SHDN Pin Voltage (Note 7) ... V

–

to V

+

Output Short Current Duration (Note 2) ... Indefinite

Operating Temperature Range (Note 3) ... –40

°C to 85°C

Specified Temperature Range (Note 4) .... –40

°C to 85°C

Junction Temperature ... 150

°C

Junction Temperature (DFN Packages) ... 125

°C

Storage Temperature Range ... –65

°C to 150°C

Storage Temperature Range

DFN Packages ... –65

°C to 125°C

Lead Temperature (Soldering, 10 sec)

MSOP, SSOP Packages ... 300

°C

PACKAGE/ORDER I FOR ATIO

U

W

U

ORDER PART

NUMBER

LT6000CDCB

LT6000IDCB

TOP VIEW 11 DD PACKAGE 10-LEAD (3mm ´ 3mm) PLASTIC DFN 10 9 6 7 8 4 5 3 2 1 V+ OUT B IN– B IN+ B SHDN OUT A IN– A IN+ A V– NC TJMAX = 125°C, θJA = 160°C/W (NOTE 2)

EXPOSED PAD (PIN 11) IS CONNECTED TO V–_{(PIN 4)}

LT6001CMS8

LT6001IMS8

LT6001CDD

LT6001IDD

LTBVD

TJMAX = 150°C, θJA = 250°C/W 1 2 3 4 OUT A IN– A IN+ A V– 8 7 6 5 V+ OUT B IN– B IN+ B TOP VIEW MS8 PACKAGE 8-LEAD PLASTIC MSOP

– + – +

LCDM

LBVH

TOP VIEW V+ V– OUT SHDN –IN +IN DCB PACKAGE 6-LEAD (2mm × 3mm) PLASTIC DFN 4 5 7 6 3 2 1 TJMAX = 125°C, θJA = 160°C/W (NOTE 2)

MS8 PART

MARKING*

ORDER PART

NUMBER

DD PART

MARKING*

ORDER PART

NUMBER

ORDER PART NUMBER

LT6002CGN

LT6002IGN

ORDER PART NUMBER

DHC PART MARKING*

LT6002CDHC

LT6002IDHC

GN PART MARKING

6002

6002I

TJMAX = 125°C, θJA = 160°C/W (NOTE 2)

16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 TOP VIEW 17 DHC PACKAGE 16-LEAD (5mm ´ 3mm) DFN OUT A IN– A IN+ A V+ IN+ B IN– B OUT B NC OUT D IN– D IN+ D V– IN+ C IN– C OUT C NC A D B C 1 2 3 4 5 6 7 8 TOP VIEW GN PACKAGE 16-LEAD NARROW PLASTIC SSOP

16 15 14 13 12 11 10 9 OUT A IN– A IN+ A V+ IN+ B IN– B OUT B NC OUT D IN– D IN+ D V– IN+ C IN– C OUT C NC + – + – – + – + A D B C TJMAX = 150°C, θJA = 135°C/W

6002

*Temperature grades are identified on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking:

http://www.linear.com/leadfree/

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3

600012fa

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V

OS

Input Offset Voltage

LT6001MS8

200

600 µV

0°C ≤ T

A

≤ 70°C

●

800 µV

–40°C ≤ T

A

≤ 85°C

●

950 µV

LT6000DCB, LT6001DD, LT6002GN

250

750 µV

0°C ≤ T

A

≤ 70°C

● 1000

µV

–40°C ≤ T

A

≤ 85°C

● 1200

µV

LT6002DHC

300

900 µV

0 °C ≤ T

A

≤ 70°C

● 1100

µV

–40°C ≤ T

A

≤ 85°C

● 1300

µV

V

CM

= V

+

LT6001MS8

400 1000

µV

● 1300

µV

V

CM

= V

+

LT6000DCB, LT6001DD, LT6002GN

500 1200

µV

● 1550

µV

V

CM

= V

+

LT6002DHC

500 1300

µV

● 1700

µV

∆V

OS

/

∆T

Input Offset Voltage Drift (Note 5)

V

CM

= 0.5V

●

2

5 µV/°C

I

B

Input Bias Current

V

CM

= 0.5V

● –5

–2

nA

V

CM

= V

–

● –5

–2

nA

V

CM

= V

+

●

4

10 nA

I

OS

Input Offset Current

V

CM

= 0.5V

●

0.2

1 nA

V

CM

= V

–

●

0.2

1 nA

V

CM

= V

+

●

0.4

2 nA

Input Noise Voltage

0.1Hz to 10Hz

1.2 µV

P-P

e

n

Input Voltage Noise Density

f = 1kHz

75 nV/

√Hz

i

n

Input Current Noise Density

f = 1kHz

25 fA/

√Hz

R

IN

Input Resistance

Common Mode (V

CM

= 0V to 0.6V)

3.5 G

Ω

Differential

10

25 M

Ω

C

IN

Input Capacitance

5 pF

CMRR

Common Mode Rejection Ratio

V

CM

= 0V to 0.6V, 0

°C ≤ T

A

≤ 70°C

●

82

96 dB

V

CM

= 0.1V to 0.6V, –40

°C ≤ T

A

≤ 85°C

●

82

96 dB

V

CM

= 0V to 1.8V

●

60

78 dB

Input Voltage Range

●

0

1.8 V

PSRR

Power Supply Rejection Ratio

V

S

= 1.8V to 16V

●

86

100 dB

V

CM

= V

O

= 0.5V

Minimum Supply

V

CM

= V

O

= 0.5V

●

1.8 V

A

VOL

Large-Signal Gain

V

O

= 0.25V to 1.25V

R

L

= 100k to GND

25

65 V/mV

R

L

= 100k to GND

●

20 V/mV

R

L

= 10k to GND

40

125 V/mV

R

L

= 10k to GND

●

25 V/mV

V

OL

Output Swing Low (Note 6)

Input Overdrive = 30mV

No Load

●

30

60 mV

I

SINK

= 100

µA

●

120

200 mV

V

OH

Output Swing High (Note 6)

Input Overdrive = 30mV

No Load

●

30

60 mV

I

SOURCE

= 100

µA

●

140

225 mV

R

L

= 10k to GND

●

160

250 mV

ELECTRICAL CHARACTERISTICS

The

● denotes specifications which apply over the full specified temperature

range, otherwise specifications are T

A

= 25

°C. V

S

= 1.8V, 0V, V

CM

= V

OUT

= 0.5V. For the LT6000 and the LT6001DD, V

SHDN

= V

+

,

(4)

600012fa

4

ELECTRICAL CHARACTERISTICS

The

● denotes specifications which apply over the full specified temperature

range, otherwise specifications are T

A

= 25

°C. V

S

= 1.8V, 0V, V

CM

= V

OUT

= 0.5V. For the LT6000 and the LT6001DD, V

SHDN

= V

+

,

unless otherwise noted.

I

SC

Short-Circuit Current

Short to GND

2

4 mA

0°C ≤ T

A

≤ 70°C

●

1 mA

–40°C ≤ T

A

≤ 85°C

●

0.4 mA

Short to V

+

0.7

2 mA

0°C ≤ T

A

≤ 70°C

●

0.4 mA

–40°C ≤ T

A

≤ 85°C

●

0.15 mA

I

S

Supply Current per Amplifier

13

16 µA

0°C ≤ T

A

≤ 70°C

●

22 µA

–40°C ≤ T

A

≤ 85°C

●

24 µA

Total Supply Current in Shutdown (Note 7)

V

SHDN

= 0.3V

● 0.8

1.5 µA

I

SHDN

SHDN Pin Current (Note 7)

V

SHDN

= 1.8V

●

0

30 nA

V

SHDN

= 0V

● –300

–200

nA

Shutdown Output Leakage Current (Note 7)

V

SHDN

= 0.3V (V

–

≤ V

OUT

≤ V

+

)

●

20 nA

V

L

SHDN Pin Input Low Voltage (Note 7)

●

0.3 V

V

H

SHDN Pin Input High Voltage (Note 7)

● 1.5V

V

t

ON

Turn On Time (Note 7)

V

SHDN

= 0V to 1.8V,

400 µs

R

L

= 10k

t

OFF

Turn Off Time (Note 7)

V

SHDN

= 1.8V to 0V,

100 µs

R

L

= 10k

GBW

Gain Bandwidth Product (Note 8)

Freq = 1kHz

32

50 kHz

0°C ≤ T

A

≤ 70°C

●

28 kHz

–40°C ≤ T

A

≤ 85°C

●

24 kHz

SR

Slew Rate

A

V

= –1, V

OUT

= 0.25V to 1.5V

9

15 V/ms

Measure 0.5V to 1.25V, 0°C ≤ T

A

≤ 70°C

●

7 V/ms

–40°C ≤ T

A

≤ 85°C

●

5 V/ms

FPBW

Full Power Bandwidth (Note 9)

V

OUT

= 1.25V

P-P

2.3

3.8 kHz

(5)

5

600012fa

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V

OS

Input Offset Voltage

LT6001MS8

200

600 µV

0 °C ≤ T

A

≤ 70°C

●

800 µV

–40

°C ≤ T

A

≤ 85°C

●

950 µV

LT6000DCB, LT6001DD, LT6002GN

250

750 µV

0 °C ≤ T

A

≤ 70°C

● 1000

µV

–40

°C ≤ T

A

≤ 85°C

● 1200

µV

LT6002DHC

300

900 µV

0 °C ≤ T

A

≤ 70°C

● 1100

µV

–40

°C ≤ T

A

≤ 85°C

● 1300

µV

V

CM

= V

+

LT6001MS8

400 1000

µV

● 1300

µV

V

CM

= V

+

LT6000DCB, LT6001DD, LT6002GN

500 1200

µV

● 1550

µV

V

CM

= V

+

LT6002DHC

500 1300

µV

● 1700

µV

∆V

OS

/∆T

Input Offset Voltage Drift (Note 5)

V

CM

= V

S

/2

●

2

5 µV/°C

I

B

Input Bias Current

V

CM

= V

S

/2

● –6

–2

nA

V

CM

= V

–

● –6

–2

nA

V

CM

= V

+

●

4

12 nA

I

OS

Input Offset Current

V

CM

= V

S

/2

●

0.2

1.2 nA

V

CM

= V

–

●

0.2

1.2 nA

V

CM

= V

+

●

0.4

2.4 nA

Input Noise Voltage

0.1Hz to 10Hz

1.2 µV

P-P

e

n

Input Voltage Noise Density

f = 1kHz

75 nV/

√Hz

i

n

Input Current Noise Density

f = 1kHz

25 fA/

√Hz

R

IN

Input Resistance

Common Mode (V

CM

= 0V to 3.8V)

3.5 GΩ

Differential

●

8.5

25 M

Ω

C

IN

Input Capacitance

5 pF

CMRR

Common Mode Rejection Ratio

V

CM

= 0V to 3.8V, 0

°C ≤ T

A

≤ 70°C

●

90

105 dB

V

CM

= 0.1V to 3.8V, –40°C ≤ T

A

≤ 85°C

●

90

105 dB

V

CM

= 0V to 5V

●

68

86 dB

Input Voltage Range

●

0

5 V

PSRR

Power Supply Rejection Ratio

V

S

= 1.8V to 16V

●

86

100 dB

V

CM

= V

O

= 0.5V

Minimum Supply

●

1.8 V

A

VOL

Large-Signal Gain

V

O

= 0.5V to 4.5V

R

L

= 100k to V

S

/2

30

60 V/mV

R

L

= 100k to V

S

/2

●

25 V/mV

R

L

= 10k to V

S

/2

16

25 V/mV

R

L

= 10k to V

S

/2

●

10 V/mV

R

L

= 10k to GND

160 1000

V/mV

R

L

= 10k to GND

●

80 V/mV

V

OL

Output Swing Low (Note 6)

Input Overdrive = 30mV

No Load

●

30

60 mV

I

SINK

= 100

µA

●

120

200 mV

I

SINK

= 500µA

●

180

300 mV

ELECTRICAL CHARACTERISTICS

The

● denotes specifications which apply over the full specified temperature

range, otherwise specifications are T

_A

= 25

°C. V

_S

= 5V, 0V, V

_CM

= V

_OUT

= 1/2 Supply. For the LT6000 and the LT6001DD, V

_SHDN

= V

+

,

unless otherwise noted.

(6)

600012fa

6

ELECTRICAL CHARACTERISTICS

The

● denotes specifications which apply over the full specified temperature

range, otherwise specifications are T

A

= 25

°C. V

S

= 5V, 0V, V

CM

= V

OUT

= 1/2 Supply. For the LT6000 and the LT6001DD, V

SHDN

= V

+

,

unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V

OH

Output Swing High (Note 6)

Input Overdrive = 30mV

No Load

●

30

60 mV

I

SOURCE

= 100

µA

●

140

225 mV

R

L

= 10k to GND

●

160

400 mV

I

SC

Short-Circuit Current

Short to GND

5

10 mA

0 °C ≤ T

A

≤ 70°C

●

4 mA

–40

°C ≤ T

A

≤ 85°C

●

3 mA

Short to V

+

3.5

7.5 mA

0°C ≤ T

A

≤ 70°C

●

2.5 mA

–40°C ≤ T

A

≤ 85°C

●

1.5 mA

I

S

Supply Current per Amplifier

15

18 µA

0°C ≤ T

A

≤ 70°C

●

24 µA

–40

°C ≤ T

A

≤ 85°C

●

27 µA

V

S

=

±8V

20

25 µA

●

34 µA

Total Supply Current in Shutdown (Note 7)

V

SHDN

= 0.3V

●

3

5 µA

I

SHDN

SHDN Pin Current (Note 7)

V

SHDN

= 5V

●

0

30 nA

V

SHDN

= 0V

● –1000

–650

nA

Shutdown Output Leakage Current (Note 7)

V

SHDN

= 0.3V (V

–

≤ V

OUT

≤ V

+

)

●

20 nA

V

L

SHDN Pin Input Low Voltage (Note 7)

●

0.3 V

V

H

SHDN Pin Input High Voltage (Note 7)

●

4.7 V

t

ON

Turn On Time (Note 7)

V

SHDN

= 0V to 5V, R

L

= 10k

400 µs

t

OFF

Turn Off Time (Note 7)

V

SHDN

= 5V to 0V, R

L

= 10k

100 µs

GBW

Gain Bandwidth Product

Freq = 1kHz

40

60 kHz

0 °C ≤ T

A

≤ 70°C

●

35 kHz

–40

°C ≤ T

A

≤ 85°C

●

30 kHz

SR

Slew Rate

A

V

= –1, V

OUT

= 0.5V to 4.5V

11

18 V/ms

Measure 1V to 4V, 0°C ≤ T

A

≤ 70°C

●

8 V/ms

–40°C ≤ T

A

≤ 85°C

●

6 V/ms

FPBW

Full Power Bandwidth (Note 9)

V

OUT

= 4V

P-P

0.87

1.4 kHz

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: A heat sink may be required to keep the junction temperature

below the absolute maximum. This depends on the power supply voltage

and how many amplifiers are shorted. The

θ

JA

specified for the DD and

DHC packages is with minimal PCB heat spreading metal. Using expanded

metal area on all layers of a board reduces this value.

Note 3: The LT6000C/LT6000I/LT6001C/LT6001I and LT6002C/LT6002I

are guaranteed functional over the temperature range of –40

°C to 85°C.

Note 4: The LT6000C/LT6001C/LT6002C is guaranteed to meet specified

performance from 0

°C to 70°C. The LT6000C/LT6001C/LT6002C are

designed, characterized and expected to meet specified performance from

–40

°C to 85°C but are not tested or QA sampled at these temperatures.

The LT6000I/LT6001I/ LT6002I is guaranteed to meet specified

performance from –40

°C to 85°C.

Note 5: This parameter is not 100% tested.

Note 6: Output voltage swings are measured between the output and

power supply rails.

Note 7: Specifications apply to the LT6000 or the LT6001DD with

shutdown.

Note 8: Guaranteed by correlation to slew rate at V

S

= 1.8V and GBW at

V

S

= 5V.

Note 9: Full-power bandwidth is calculated from the slew rate:

(7)

7

600012fa

TYPICAL PERFOR A CE CHARACTERISTICS

W

U

Supply Current vs Supply Voltage

TOTAL SUPPLY VOLTAGE (V) 0

0

µ A) 5 10 15 12 14 16 35 600012 G03 2 4 6 8 10 18 20 25 30 TA = 125°C TA = –55°C TA = 25°C VCM = 0.5V

TC V

OS

Distribution

V

OS

Distribution

Input Offset Voltage

vs Total Supply Voltage

TOTAL SUPPLY VOLTAGE (V) 0 –300 OFFSET VOLTAGE ( µ V) –100 –100 0 12 14 16 400 600012 G05 2 4 6 8 10 18 100 200 300 TA = 125°C TA = –55°C TA = 25°C VCM = 0.5V TYPICAL PART

INPUT COMMON MODE VOLTAGE (V) –200 OFFSET VOLTAGE ( µ V) 0 200 400 –100 100 300 1 2 3 4 60012 G06 5 0.5 0 1.5 2.5 3.5 4.5 VS = 5V, 0V TYPICAL PART TA = 125°C TA = 25°C TA = –55°C

Input Bias Current

vs Common Mode Voltage

COMMON MODE VOLTAGE (V) 0

–5.0

INPUT BIAS CURRENT (nA)

–2.5 2.5 5.0 7.5 12.5 0.5 2.5 3.5 60012 G07 0 10.0 2 4.5 5 1 1.5 3 4 VS = 5V, 0V TA = 125°C TA = 25°C TA = –55°C

Output Saturation Voltage

vs Load Current (Output High)

SOURCING LOAD CURRENT (mA) 0.001

0.01

OUTPUT HIGH SATURATION VOLTAGE (V)

0.1 1.0 0.1 1 0.01 10 60012 G08 TA = 25°C TA = 125°C TA = –55°C VS = 5V, 0V INPUT OVERDRIVE = 30mV

Output Saturation Voltage

vs Load Current (Output Low)

SINKING LOAD CURRENT (mA) 0.001

0.01

OUTPUT LOW SATURATION VOLTAGE (V)

0.1 1.0 0.1 1 0.01 10 60012 G08 TA = 25°C TA = 125°C TA = –55°C VS = 5V, 0V INPUT OVERDRIVE = 30mV

Input Offset Voltage

vs Input Common Mode Voltage

INPUT OFFSET VOLTAGE (µV)

0 PERCENT OF UNITS (%) 10 20 30 5 15 25 –400 –200 0 200 60012 G01 600 400 –600 VS = 5V, 0V VCM = 2.5V MS8 PACKAGE DISTRIBUTION (µV/°C) –5 PERCENT OF UNITS (%) 12 16 20 3 20012 G02 8 4 10 14 18 6 2 0 –3 –4 –2 –1 0 1 2 4 5 VS = 5V, 0V VCM = 2.5V MS8, GN16, DD10 PACKAGES –40°C TO 85°C

CHANGE IN OFFSET VOLTAGE (

µ V) 100 150 200 3 60012 G35 50 0 –100 1.5 2 2.5 –50 300 250 TA = 125°C TA = 25°C VCM = 0.5V TA = –55°C

Change in Input Offset Voltage

vs Total Supply Voltage

(8)

600012fa

8

TYPICAL PERFOR A CE CHARACTERISTICS

W

U

0.1Hz to 10Hz Output Voltage Noise

Open-Loop Gain

Output Short-Circuit Current vs

Total Supply Voltage (Sourcing)

TOTAL SUPPLY VOLTAGE (V) 1 8 10 14 4 60012 G11 6 4 2 3 5 2 0 12

OUTPUT SHORT-CIRCUIT CURRENT (mA)

VCM = 0.5V

OUTPUT SHORTED TO V–

TA = 125°C TA = 25°C

TA = –55°C

Output Short-Circuit Current vs

Total Supply Voltage (Sinking)

OUTPUT SHORT-CIRCIUT CURRENT (mA)

4 6 5 60012 G12 2 0 2 3 4 10 8 VCM = 0.5V OUTPUT SHORTED TO V+ TA = 125°C TA = 25°C TA = –55°C TIME (SECONDS)

NOISE VOLTAGE (500nV/DIV)

2 4 6 8 60012 G13 10 1 0 3 5 7 9 VS = ±2.5V

Noise Voltage Density vs Frequency

FREQUENCY (Hz) 1 50 NOISE VOLTAGE (nV/ √ Hz) 80 90 100 10 100 1000 60012 G14 70 60 VS = 5V, 0V TA = 25°C VCM = 4.5V VCM = 2.5V

Input Noise Current vs Frequency

FREQUENCY (Hz) 1

10

INPUT NOISE CURRENT DENSITY (fA/

√ Hz) 100 1000 10 100 1000 60012 G15 VS = 5V, 0V TA = 25°C VCM = 4.5V VCM = 2.5V OUTPUT VOLTAGE (V) 0 –60

CHANGE IN INPUT OFFSET VOLTAGE (

µ V) –40 –20 0 20 60 0.3 0.6 0.9 1.2 60012 G16 1.5 1.8 40 VS = 1.8V, 0V VCM = 0.5V TA = 25°C RL = 10k RL = 100k OUTPUT VOLTAGE (V) 0

µ V) 0 20 4 60012 G17 –20 –40 1 2 3 5 40 VS = 5V, 0V VCM = 2.5V TA = 25°C RL = 10k RL = 100k OUTPUT VOLTAGE (V) –2.5

µ V) 200 150 100 50 0 –50 –100 –150 – 200 1.5 20012 G18 –1.5 –0.5 0.5 1 2.5 –2 –1 0 2 VS = ±2.5V TA = 25°C RL = 10k RL = 100k

Open-Loop Gain

Output Saturation Voltage

vs Input Overdrive

INPUT OVERDRIVE (mV) 0

0

OUTPUT SATURATION VOLTAGE (mV)

20 40 60 5 10 15 20 60012 G10 25 80 100 10 30 50 70 90 30 VS = 5V, 0V NO LOAD OUTPUT HIGH OUTPUT LOW

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TYPICAL PERFOR A CE CHARACTERISTICS

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Slew Rate vs Temperature

Gain Bandwidth and Phase

Margin vs Temperature

TEMPERATURE (°C) –50

10

GAIN BANDWIDTH (kHz)

PHASE MARGIN (DEG)

20 30 40 60 70 80 –25 25 50 125 50 45 50 55 60 70 75 80 65 0 75 100 VS = 1.8V, 0V VCM = 0.5V VS = 1.8V, 0V VCM = 0.5V VS = 5V, 0V VCM = 2.5V VS = 5V, 0V VCM = 2.5V GAIN BANDWIDTH PHASE MARGIN f = 1kHz 60012 G21 TEMPERATURE (°C) –50 SLEW RATE (V/ms) 25 30 35 25 75 60012 G22 20 15 –25 0 50 100 125 10 5 RISING VS = 5V, 0V RISING VS = 1.8V, 0V FALLING VS = 5V, 0V FALLING VS = 1.8V, 0V AV = –1 RF = RG = 100k

Capacitive Load Handling

Overshoot vs Capacitive Load

CAPACITIVE LOAD (pF) 10 20 OVERSHOOT (%) 25 30 35 40 100 1000 10000 60012 G23 15 10 5 0 45 50 AV = 1 AV = 2 AV = 5 VS = 5V, 0V VCM = 2.5V

Common Mode Rejection Ratio

vs Frequency

FREQUENCY (kHz) 0.1

70

COMMON MODE REJECTION RATIO (dB)

80 90 100 1 10 100 60012 G24 60 50 40 30 VS = ±2.5V TA = 25°C

Power Supply Rejection Ratio

vs Frequency

FREQUENCY (kHz) 30

COMMON MODE REJECTION RATIO (dB)

70 110 10 50 90 0.01 1 10 100 60012 G25 –10 0.1 POSITIVE SUPPLY NEGATIVE SUPPLY VS = ±2.5V TA = 25°C

Output Impedance vs Frequency

FREQUENCY (kHz) 0.01 0.1 0.1 OUTPUT IMPEDANCE ( Ω ) 10 10000 1 10 100 60012 G26 1 100 1000 VS = ±2.5V TA = 25°C AV = 10 AV = 1

Disabled Output Impedance

vs Frequency (LT6000/LT6001DD)

FREQUENCY (kHz) 0.01 0 OUTPUT IMPEDANCE (k Ω ) 10 1000 1 0.1 10 100 60012 G27 1 100 VS = ±2.5V VPIN6(SHDN) = –2.5V

Gain and Phase vs Frequency

FREQUENCY (kHz) 0 GAIN (dB) PHASE (DEG) 60 70 –10 –20 50 20 40 30 10 0.1 10 100 1000 60012 G19 –30 –20 100 120 –40 –60 80 20 60 40 0 –80 1 VCM = 4.5V VCM = 4.5V VCM = 2.5V PHASE GAIN VCM = 2.5V VS = 5V, 0V RF = RG = 100k AV = –1

Gain Bandwidth and Phase

Margin vs Supply Voltage

30

PHASE MARGIN (DEG)

GAIN BANDWIDTH (kHz) 40 60 70 80 4 8 10 18 600012 G36 50 45 50 60 65 70 55 2 6 12 14 16 RF = RG = 100k AV = –1 f = 1kHz PHASE MARGIN GAIN BANDWIDTH

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TYPICAL PERFOR A CE CHARACTERISTICS

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1.5V 0.25V 100µs/DIV AV = 1 VS = 1.8V, 0V CL = 100pF RL = 10k 60012 G29 20mV/DIV 10µs/DIV AV = 1 VS = ±2.5V CL = 100pF RL = 100k 60012 G30

Large-Signal Response

Small-Signal Response

Total Supply Current

vs SHDN Pin Voltage (LT6001DD)

SHDN PIN VOLTAGE (V) 0

0

SUPPLY CURRENT BOTH AMPLIFIERS (

µ A) 10 30 40 50 0.4 0.8 1.0 1.8 60012 G31 20 0.2 0.6 1.2 1.4 1.6 VS = 1.8V, 0V TA = 125°C TA = –55°C TA = 25°C

Total Supply Current

vs SHDN Pin Voltage (LT6001DD)

SHDN PIN VOLTAGE (V) 0

SUPPLY CURRENT BOTH AMPLIFIERS (

µ A) 20 40 60 10 30 50 –3 –1 1 3 60012 G32 5 –4 –5 –2 0 2 4 VS = ±5V TA = 125°C TA = –55°C TA = 25°C 0V VSHDN VOUT 0V 500µs/DIV VIN = 1V AV = 1 VS = 1.8V, 0V RL = 100k 60012 G33

Shutdown Response

(LT6000/LT6001DD)

Large-Signal Response

4.5V 0.5V 100µs/DIV AV = 1 VS = 5V, 0V CL = 100pF RL = 10k 60012 G28

Supply Current

vs SHDN Pin Voltage (LT6000)

Supply Current

vs SHDN Pin Voltage (LT6000)

SHDN PIN VOLTAGE (V) 0 0 SUPPLY CURRENT ( µ A) 5 15 20 25 0.4 0.8 1.0 1.8 60012 G37 10 0.2 0.6 1.2 1.4 1.6 30 VS = 1.8V, 0V TA = 125°C TA = –55°C TA = 25°C SHDN PIN VOLTAGE (V) 0 SUPPLY CURRENT ( µ A) 10 20 30 5 15 25 –3 –1 1 3 60012 G34 5 –4 –5 –2 0 2 4 TA = 125°C VS = ±5V TA = –55°C TA = 25°C

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600012fa Q1 Q17 Q6 Q2 Q10 C1 Q3 IN+ Q8 Q19 Q20 R1 R8 7M R6 R7 R2 30k D3 V+ V+ V– R4 R5 IN– R3 30k Q9 Q11 Q14 V+ OUT V– SHDN V– Q15 CM Q13 COMPLEMENTARY DRIVE GENERATOR Q12 Q4 Q5 Q7 Q16 Q18

APPLICATIO S I FOR ATIO

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Supply Voltage

The positive supply of the LT6000/LT6001/LT6002 should

be bypassed with a small capacitor (about 0.01

µF) within

an inch of the pin. When driving heavy loads, an additional

4.7 µF electrolytic capacitor should be used. When using

split supplies, the same is true for the negative supply pin.

Rail-to-Rail Characteristics

The LT6000/LT6001/LT6002 are fully functional for an

input signal range from the negative supply to the positive

supply. Figure 1 shows a simplified schematic of the

amplifier. The input stage consists of two differential

amplifiers, a PNP stage Q3/Q6 and an NPN stage Q4/Q5

that are active over different ranges of the input common

mode voltage. The PNP stage is active for common mode

voltages, V

_CM

, between the negative supply to

approxi-mately 1V below the positive supply. As V

_CM

moves closer

towards the positive supply, the transistor Q7 will steer

Q2’s tail current to the current mirror Q8/Q9, activating the

NPN differential pair. The PNP pair becomes inactive for

the rest of the input common mode range up to the

positive supply.

The second stage is a folded cascode and current mirror

that converts the input stage differential signals into a

single ended output. Capacitor C1 reduces the unity cross

frequency and improves the frequency stability without

degrading the gain bandwidth of the amplifier. The

comple-mentary drive generator supplies current to the output

transistors that swing from rail to rail.

Input

The input bias current depends on which stage is active.

The input bias current polarity depends on the input

common mode voltage. When the PNP stage is active, the

input bias currents flow out of the input pins. They flow in

the opposite direction when the NPN stage is active. The

offset error due to the input bias currents can be

minimized by equalizing the noninverting and inverting

source impedance.

Figure 1

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APPLICATIO S I FOR ATIO

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The input offset voltage changes depending on which

input stage is active; input offset voltage is trimmed on

both input stages, and is guaranteed to be 600µV max in

the PNP stage. By trimming the input offset voltage of

both input stages, the input offset voltage over the entire

common mode range (CMRR) is typically 400µV,

main-taining the precision characteristics of the amplifier.

The input stage of the LT6000/LT6001/LT6002

incorpo-rates phase reversal protection to prevent wrong polarity

outputs from occurring when the inputs are driven up to

2V below the negative rail. 30k protective resistors are

included in the input leads so that current does not

become excessive when the inputs are forced below V

–

or

when a large differential signal is applied. Input current

should be limited to 10mA when the inputs are driven

above the positive rail.

Output

The output of the LT6000/LT6001/LT6002 can swing to

within 30mV of the positive rail with no load and within

30mV of the negative rail with no load. When monitoring

input voltages within 30mV of the positive rail or within

30mV of the negative rail, gain should be taken to keep

the output from clipping. The LT6000/LT6001/LT6002

can typically source 10mA on a single 5V supply,

sourc-ing current is reduced to 4mA on a ssourc-ingle 1.8V supply as

noted in the electrical characteristics.

The normally reverse-biased substrate diode from the

output to V

–

will cause unlimited currents to flow when the

output is forced below V

–

. If the current is transient and

limited to 100mA, no damage will occur.

Start-Up and Output Saturation Characteristics

Micropower op amps are often not micropower during

start-up characteristics or during output saturation. This

can wreak havoc on limited current supplies, in the worst

case there may not be enough supply current available to

take the system up to nominal voltages. Also, when the

output saturates, the part may draw excessive current and

pull down the supplies, compromising rail-to-rail

perfor-mance. Figure 1 shows the start-up characteristics of the

LT6000/LT6001/LT6002 for three limiting cases. The

cir-cuits are shown in Figure 2. One circuit creates a positive

offset forcing the output to come up saturated high.

Another circuit creates a negative offset forcing the output

to come up saturated low, while the last circuit brings the

output up at 1/2 supply. In all cases, the supply current is

well controlled and is not excessive when the output is on

either rail.

SUPPLY VOLTAGE (V) 0

µ A) 12 16 20 4 60012 F01 8 4 10 14 18 6 2 0 1 0.5 1.5 2 2.5 3 3.5 4.5 5 OUTPUT LOW OUTPUT HIGH OUTPUT AT VS/2

–

+

30mV VS

Output High

–

+

VS/2 VS 60012 F02

Output at V

S

/2

–

+

30mV VS

Output Low

Figure 1. Start-Up Characteristics

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APPLICATIO S I FOR ATIO

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The LT6000/LT6001/LT6002 outputs can swing to within

a respectable 30mV of each rail and draw virtually no

excessive supply current. Figure 3 compares the dual

LT6001 to a competitive part. Both op amps are in unity

gain and their outputs are driven into each rail. The supply

current is shown when the op amps are in linear operation

and when they are driven into each rail. As can be seen

from Figure 3, the supply current of the competitive part

increases 3-fold or 5-fold depending on which rail the

output goes to whereas the LT6001 draws virtually no

excessive current.

Gain

The open-loop gain is almost independent of load when

the output is sourcing current. This optimizes

perfor-mance in single supply applications where the load is

returned to ground. The typical performance curve of

Open-Loop Gain for various loads shows the details.

Shutdown

The single LT6000 and the 10-lead dual LT6001 include a

shutdown feature that disables the part reducing

quies-cent current and makes the output high impedance. The

devices can be shut down by bringing the SHDN pin within

0.3V of V

–

. The amplifiers are guaranteed to shut down if

the SHDN pin is brought within 0.3V of V

–

. The exact

switchover point will be a function of the supply voltage.

See the Typical Performance Characteristics curves

Sup-ply Current vs Shutdown Pin Voltage. When shut down the

total supply current is about 0.8µA and the output leakage

current is 20nA (V

–

≤ V

_OUT

≤ V

+

). For normal operation the

SHDN pin should be tied to V

+

. It can be left floating,

however, parasitic leakage currents over 1µA at the SHDN

pin may inadvertently place the part into shutdown.

VIN (V) –3 –3 VOUT (V) I CC (µ A) –2 –1 0 4 2 –1 1 2 3 1 10 20 30 70 50 60 40 –2 0 3 60012 F03 VIN VS = ±2.5V, AV = 1 + – COMPETITIVE PART LT6001 VOUT SUPPLY CURRENT PER AMPLIFIER

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TYPICAL APPLICATIO

–

+

8 10k 90.9k 0.9V (NiMH) –0.9V (NiMH) 3 2 1

–

+

10k 90.9k 5 VIN 6 7 OUT 60012 TA02a 1/2 LT6001 1/2 LT6001 FREQUENCY (Hz) –10 GAIN (dB) 50 60 –20 –30 40 10 30 20 0 100 10k 100k 1M 60012 TA02b –40 1k

Gain of 100 Amplifier

(400kHz GBW on 30

µA Supply)

Gain vs Frequency

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PACKAGE DESCRIPTIO

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DCB Package

6-Lead Plastic DFN (2mm

× 3mm)

(Reference LTC DWG # 05-08-1715)

3.00 ±0.10 (2 SIDES) 2.00 ±0.10 (2 SIDES) NOTE:

1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (TBD) 2. DRAWING NOT TO SCALE

3. ALL DIMENSIONS ARE IN MILLIMETERS

4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED

6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE

0.40 ± 0.10

BOTTOM VIEW—EXPOSED PAD 1.65 ± 0.10 (2 SIDES) 0.75 ±0.05 R = 0.115 TYP R = 0.05 TYP 1.35 ±0.10 (2 SIDES) 1 3 6 4 PIN 1 BAR TOP MARK (SEE NOTE 6) 0.200 REF 0.00 – 0.05 (DCB6) DFN 0405 0.25 ± 0.05 0.50 BSC PIN 1 NOTCH R0.20 OR 0.25 × 45° CHAMFER 0.25 ± 0.05 1.35 ±0.05 (2 SIDES)

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 1.65 ±0.05 (2 SIDES) 2.15 ±0.05 0.70 ±0.05 3.55 ±0.05 PACKAGE OUTLINE 0.50 BSC

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PACKAGE DESCRIPTIO

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MS8 Package

8-Lead Plastic MSOP

(Reference LTC DWG # 05-08-1660)

MSOP (MS8) 0204 0.53 ± 0.152 (.021 ± .006) SEATING PLANE NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE

3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.

MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.

INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX

0.18 (.007) 0.254 (.010) 1.10 (.043) MAX 0.22 – 0.38 (.009 – .015) TYP 0.127 ± 0.076 (.005 ± .003) 0.86 (.034) REF 0.65 (.0256) BSC 0° – 6° TYP DETAIL “A” DETAIL “A” GAUGE PLANE 1 2 3 4 4.90 ± 0.152 (.193 ± .006) 8 7 6 5 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 3.00 ± 0.102 (.118 ± .004) (NOTE 4) 0.52 (.0205) REF 5.23 (.206) MIN 3.20 – 3.45 (.126 – .136) 0.889 ± 0.127 (.035 ± .005)

RECOMMENDED SOLDER PAD LAYOUT 0.42 ± 0.038 (.0165 ± .0015) TYP 0.65 (.0256) BSC

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600012fa

PACKAGE DESCRIPTIO

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DD Package

10-Lead (3mm

× 3mm) Plastic DFN

(Reference LTC DWG # 05-08-1699)

3.00 ±0.10 (4 SIDES) NOTE:

1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT 2. DRAWING NOT TO SCALE

0.38 ± 0.10

BOTTOM VIEW—EXPOSED PAD 1.65 ± 0.10 (2 SIDES) 0.75 ±0.05 R = 0.115 TYP 2.38 ±0.10 (2 SIDES) 1 5 10 6 PIN 1 TOP MARK (SEE NOTE 6) 0.200 REF 0.00 – 0.05 (DD10) DFN 1103 0.25 ± 0.05 2.38 ±0.05 (2 SIDES)

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS

1.65 ±0.05 (2 SIDES) 2.15 ±0.05 0.50 BSC 0.675 ±0.05 3.50 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC

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PACKAGE DESCRIPTIO

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GN Package

16-Lead Narrow Plastic SSOP

(Reference LTC DWG # 05-08-1641)

GN16 (SSOP) 0204 1 2 3 4 5 6 7 8 .229 – .244 (5.817 – 6.198) .150 – .157** (3.810 – 3.988) 16 15 14 13 .189 – .196* (4.801 – 4.978) 12 11 10 9 .016 – .050 (0.406 – 1.270) .015 ± .004 (0.38 ± 0.10)× 45° 0° – 8° TYP .007 – .0098 (0.178 – 0.249) .0532 – .0688 (1.35 – 1.75) .008 – .012 (0.203 – 0.305) TYP .004 – .0098 (0.102 – 0.249) .0250 (0.635) BSC .009 (0.229) REF .254 MIN

RECOMMENDED SOLDER PAD LAYOUT .150 – .165

.0250 BSC .0165 ±.0015

.045 ±.005

*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

INCHES (MILLIMETERS) NOTE:

1. CONTROLLING DIMENSION: INCHES 2. DIMENSIONS ARE IN

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600012fa

PACKAGE DESCRIPTIO

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DHC Package

16-Lead (5mm

× 5mm) Plastic DFN

(Reference LTC DWG # 05-08-1706)

3.00 ±0.10 (2 SIDES) 5.00 ±0.10 (2 SIDES) NOTE:

1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WJED-1) IN JEDEC PACKAGE OUTLINE MO-229

2. DRAWING NOT TO SCALE

0.40 ± 0.10

BOTTOM VIEW—EXPOSED PAD 1.65 ± 0.10 (2 SIDES) 0.75 ±0.05 R = 0.115 TYP R = 0.20 TYP 4.40 ±0.10 (2 SIDES) 1 8 16 9 PIN 1 TOP MARK (SEE NOTE 6) 0.200 REF 0.00 – 0.05 (DHC16) DFN 1103 0.25 ± 0.05 PIN 1 NOTCH 0.50 BSC 4.40 ±0.05 (2 SIDES)

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS

1.65 ±0.05 (2 SIDES) 2.20 ±0.05 0.50 BSC 0.65 ±0.05 3.50 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05

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600012fa

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RELATED PARTS

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900

●

_{FAX: (408) 434-0507}

●

_{www.linear.com}

LT 0406 REV A • PRINTED IN USA

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TYPICAL APPLICATIO

Low Power V-to-F Converter

–

+

A2 1/2 LT6001 2 1M 1M 1M 2M V_REF V_REF 1M VREF VREF VIN VREF 42.2k 1 7 8 4 0.1µF 42.2k 2M 2M 42.2k TP0610 2N7002 3

–

+

A1 1/2 LT6001 5 6 8 7 VOUT 6 5 2 1

–

+

LTC®₁₄₄₀ 3 1000pF

FREQUENCY OUT ≈ 7.5Hz/mV • VIN LINEARITY ≈ 5%, VIN 20mV TO 800mV ISUPPLY ≈ 60µA TO 100µA

DIODES: CENTRAL SEMI CMOD3003 ×4 0.1µF 0.1µF 1µF VREF VS 4.3V TO 20V 6 60012 TA03 2 1 4 LT1790-4.096

–

+

LT6000 1.8V VOUT VIN1 SHDN

–

+

LT6000 1.8V 60012 TA04a VIN2 INPUT SELECT SHDN SN74LVC2604

MUX Amplifier

PART NUMBER

DESCRIPTION

COMMENTS

LT2178/LT2179

17µA Dual/Quad Single Supply Op Amps

120µV V

OS(MAX)

, Gain Bandwidth = 60kHz

LT1490A/LT1491A

50µA Dual/Quad Over-The-Top

®

Rail-to-Rail Input and Output Op Amps

950µV V

OS(MAX)

, Gain Bandwidth = 200kHz

LT1494/LT1495/LT1496

1.5µA Max Single/Dual/Quad Over-The-Top Precision Rail-to-Rail Input

375µV V

OS(MAX)

, Gain Bandwidth = 2.7kHz

and Output Op Amps

LT1672/LT1673/LT1674

2 µA Max, AV ≥ 5, Single/Dual/Quad Over-The-Top Precision Rail-to-Rail

Gain of 5 Stable, Gain Bandwidth = 12kHz

Input and Output Op Amps

LT1782

Micropower, Over-The-Top SOT-23 Rail-to-Rail Input and Output Op Amps

SOT-23, 800µV V

OS(MAX)

, I

S

= 55µA (Max),

Gain Bandwidth = 200kHz, Shutdown Pin

Over-The-Top is a registered trademark of Linear Technology Corporation.

VOUT 5ms/DIV 60012 TA04b VS = 1.8V VIN1 = 250Hz AT 1VP-P VIN2 = 500Hz AT 0.5VP-P INPUT SELECT = 25Hz AT 1.8VP-P INPUT SELECT