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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 1/14

SHF Communication Technologies AG

Wilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany Phone +49 30 772 051-0 • Fax +49 30 753 10 78

E-Mail: sales@shf.de • Web: http://www.shf.de

Datasheet

SHF L810 A

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 2/14

Description

The SHF L810 A is the RoHS compliant successor to the popular SHF 810 driver amplifier.

The L810 A is a three-stage amplifier design, using proprietary monolithic microwave integrated circuits (MMICs) inside special carriers to achieve ultra-wide bandwidth and low noise performance. An internal voltage regulation protects the amplifier against accidental reverse voltage connection and makes it robust against line voltage ripple.

Ease of Use

Upon delivery, the amplifier is already pre-set to deliver maximum gain, maximum output amplitude and nominally 50% crossing. The gain could be reduced by applying a negative voltage to the Gain control pin. By applying a positive or negative voltage to the Crossing control pin the Crossing could be adjusted. For more detailed information see page 10.

Available Options

01: DC return on input (max. ±1.75 V, max. 35 mA)1 02: Built-in bias tee on input (max. ±9 V, max. 200 mA)1 03: DC return on output (max. ±1.75 V, max. 35 mA)1 04: Built-in bias tee on output (max. ±9 V, max. 200 mA)1 MP: Matches the phase of two amplifiers

1

The options 01 & 02 or 03 & 04 cannot be combined.

If an option is chosen, maximum gain and output power might be reduced by up to 1 dB and the low frequency 3 dB point might be increased up to 70 kHz. The DC resistance of a bias tee is about 4 Ω.

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 3/14

Specifications – SHF L810 A

Parameter Unit Symbol Min Typ Max Conditions

Absolute Maximum Ratings

Maximum RF Input Power in Operation

dBm

V Pin max

0

0.63 peak to peak voltage Maximum RF Input Power

without Power Supply

dBm

V Pin max

10

2 peak to peak voltage

DC Voltage at RF Input V ±9 AC coupled input

DC Voltage at RF Output V ±9 AC coupled output

Gain Control Voltage V -6 -5…0 +6 will not exceed 0.03 A Crossing Control Voltage V -6 -5…+5 +6 will not exceed 0.03 A

Supply Voltage V 5.2 6 7 0.4 A, reverse voltage protected Case Temperature2 Tcase °C 10 45 55

2

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 4/14

Parameter Unit Symbol Min Typ Max Conditions

Electrical Characteristics (At 45°C case temperature, unless otherwise specified) High Frequency 3 dB Point GHz fHIGH 38

Low Frequency 3 dB Point kHz fLOW 40

Gain dB S21 28 29

inverting

measured at Pin=-27 dBm

Max. Gain Reduction dB 2 3 4

Output Power at 1 dB Compression dBm V P01dB 17 4.5 10 MHz…20 GHz peak to peak voltage

Output Power at 2 dB Compression dBm V P02dB 18.5 5.3 10 MHz…20GHz peak to peak voltage

Output Power at 3 dB Compression dBm V P03dB 19.5 6 10 MHz…20 GHz peak to peak voltage

Crossing Control

Range % -7 7 at 6 Vpp

Input Return Loss dB S11

-12 -10 -10 -9 < 10 GHz < 35 GHz

Output Return Loss dB S11 -10 -9 < 35 GHz

Rise Time/Fall Time ps tr/tf 11

15 20%...80% Deconvoluted3,4 Full Setup3 Jitter fs JRMS 600 700 720 800 Deconvoluted3,4 Full Setup3 measured at 44 Gbps / 6Vpp

Group Delay Ripple ps ±50 2 GHz…30 GHz, 160 MHz aperture

Power Consumption W 2.4 6 V / 0.4A

Mechanical Characteristics

Input Connector 1.85 mm (V) female5

Output Connector 1.85 mm (V) male5

3

Measured with SHF BPG 40 A (at full scale) -> DUT (SHF L806 A) -> Agilent 86100C with 70 GHz sampling head & precision time base.

4

Calculation based on typical results of setup without DUT :

𝑡𝑟 𝑑𝑒𝑐𝑜𝑛𝑣𝑜𝑙𝑢𝑡𝑒𝑑= √(𝑡𝑟 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝)2− (𝑡𝑟 𝑠𝑒𝑡𝑢𝑝 𝑤/𝑜 𝐷𝑈𝑇)2= √(𝑡𝑟 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝)2− (11 𝑝𝑠)2

𝐽𝑅𝑀𝑆 𝑑𝑒𝑐𝑜𝑛𝑣𝑜𝑙𝑢𝑡𝑒𝑑= √(𝐽𝑅𝑀𝑆 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝)2− (𝐽𝑅𝑀𝑆 𝑠𝑒𝑡𝑢𝑝 𝑤/𝑜 𝐷𝑈𝑇)2= √(𝐽𝑅𝑀𝑆 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝)2− (350 𝑓𝑠)2

5

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 5/14

Typical S-Parameters, Group Delay and Phase Response

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 6/14

Typical Noise Figure

The measurement had been performed using a FSW85 Spectrum Analyzer by Rhode & Schwarz. The noise figure defines the degradation of the signal-to-noise ratio when the signal passes the amplifier. An ideal amplifier would amplify the noise at its input along with the signal. However, a real amplifier adds some extra noise from its own components and degrades the signal-to-noise ratio. Please note that this applies to small signals only. When the amplifier is used close to or in its saturation region additional non-linear effects will impact the signal-to-noise ratio and the signal waveform.

0 1 2 3 4 5 6 7 8 9 10 0 5 10 15 20 25 30 35 40 No ise Fi gu re [d B ] Frequency [GHz]

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 7/14

Typical Binary Waveforms

Eye Amplitudes: Input ~150 mV

Output ~4 V

Measurements at 32 and 44 Gbps had been performed using a SHF 40 A BPG and an Agilent 86100C DCA with Precision Time Base Module (86107A) and 70 GHz Sampling Head (86118A).

This measurements will not be part of the inspection report delivered with each particular device.

Input Signal @ 32 Gbps

Output Signal @ 32 Gbps

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 8/14

Typical Binary Waveforms

Eye Amplitudes: Input ~350 mV

Output ~6 V

Measurements at 32 and 44 Gbps had been performed using a SHF 40 A BPG and an Agilent 86100C DCA with Precision Time Base Module (86107A) and 70 GHz Sampling Head (86118A).

This measurements will be part of the inspection report delivered with each particular device.

Input Signal @ 32 Gbps

Output Signal @ 32 Gbps

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 9/14

Typical 4-Level Waveforms

Eye Amplitudes: Input ~150 mV

Output ~3.5 V

Measurements had been performed using a SHF 613 A DAC and an Agilent 86100C DCA with Precision Time Base Module (86107A) and 70 GHz Sampling Head (86118A).

-5 V applied to the crossing control pin.

This measurements will not be part of the inspection report delivered with each particular device.

Input Signal @ 45 GBaud Output Signal @ 45 GBaud, ~3.5 Vpp

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 10/14

Handling Instructions

To operate the amplifier a positive supply voltage of approximately +6 V must be applied.

The gain can be adjusted by applying a voltage of 0 to -5 V to the gain control pin. If this pin is left open, the amplifier will have maximum gain. By reducing the gain the crossing will shift. Typical characteristics are shown in the following diagram for an input voltage of 0.35 Vpp with 50% crossing.

The crossing can be adjusted by applying a voltage of -5 to +5 V to the crossing control pin. If this pin is left open a crossing of approximately 50 % is achieved. The range depends on the input voltage level. Typical characteristics are shown in the following diagram for input voltages of 0.15 and 0.35 Vpp with 50% crossing.

-6 -4 -2 0 2 4 6 -5 -4 -3 -2 -1 0

Gain Control Voltage [V]

Gain [dB] Crossing shift [%] 35 40 45 50 55 60 65 -5 0 5 C ros si ng [ %]

Crossing Control Voltage [V]

0.15 V 0.35 V

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 11/14

Typical Low Frequency Response (<40 MHz)

Typical Saturation power

Top (red): 3 dB compression; Middle (green): 2 dB compression;

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 12/14

Mechanical Drawing with Heat Sink

Pin assignment might change if a bias tee option is chosen.

For permanent mounting remove the heat sink from the amplifier. In that case please ensure that adequate cooling of the amplifier is guaranteed. It is recommended to use thermal paste or a thermal gap pad for the mounting. In order to separate the heat sink from the amplifier, remove the four screws on the heat sink. Please note, thermal paste is used between the heat sink and the amplifier housing.

n c + 6 V 0 .5 A 4 7 4 4 4 S H F L 8 1 0 A S H F 4 0 k H z 3 8 G H z P : 2 0 d B m C o m m u n ic a ti o n Te c h n o lo g ie s A G G e rm a n y C ro s s in g -5 V .. .+ 5 V G a in 0 . .. -5 V 03d B 2 9 d B All dimensions in mm 1 2 .3 5 7 .1 5 7 .1 5 1 0 .6 3 0 L e ft v ie w R ig h t v ie w B o tt o m v ie w T o p v ie w 4 .8 4 .8 3 5 7 9 7 1 2 .3 7 4 .9 1 6 .5 4 2 5 1 4 .9 1 6 .5 4 2

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 13/14

Mechanical Drawing without Heat Sink

Pin assignment might change if a bias tee option is chosen.

Please ensure that adequate cooling of the amplifier is guaranteed.

n c + 6 V 0 .5 A 4 7 4 4 4 S H F L 8 1 0 A S H F 4 0 k H z 3 8 G H z P : 2 0 d B m C o m m u n ic a ti o n T e c h n o lo g ie s A G G e rm a n y C ro s s in g -5 V .. .+ 5 V G a in 0 . .. -5 V 03d B 2 9 d B All dimensions in mm 7 .1 5 1 0 .6 R ig h t v ie w L e ft v ie w T o p v ie w B o tt o m v ie w 4 .8 3 3 2 1 3 .5 M2.5x5 (4x) 3 1 4 8 5 1 4 .9 1 6 .5 4 2 3 5 7 9 12 .3 5 7 1 2 .3 7 1 3 .5 4 .9 1 6 .5 4 2

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SHF reserves the right to change specifications and design without notice - SHF L810 A - V001 - May 22, 2018 Page 14/14

User Instructions

ATTENTION!

Electrostatic sensitive Ga As FET amplifier

1. To prevent damage through static charge build up, cables should be always discharged before connecting them to the amplifier!

2. Attach a 50 Ohm output load before supplying DC power to the amplifier!

3. The supply voltage can be taken from any regular 6 V, 0.5 A DC power supply and can be connected to the supply feed-through filter via an ON / OFF switch.

4. Using a 3 dB or 6 dB input attenuator will result in a 6 dB or 12 dB increase of the input return loss. For minimal degradation of amplifier rise time, these attenuators should have a bandwidth specification of greater 50 GHz (V/ 1.85mm attenuators)!

5. A input signal of about 0.35 Vpp will produce output swing of about 6 Vpp.

6. Higher input voltages will drive the amplifier’s output stage into saturation, leading to waveform peak clipping.

7. Saturated output voltages can only be used without damage while the amplifier is connected to a 50 Ohm precision load with a VSWR of less than 1.2 or better than 20 dB return loss up to 40 GHz. 8. While using a reflective load the output voltage has to be reduced to a safe operating level according

to the magnitudes of the reflections.

9. ATTENTION: At radio frequencies a capacitive load can be transformed to an inductive one through transmission lines! With an output stage driven into saturation this may lead to the immediate destruction of the amplifier (within a few ps)!

References

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