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.deDatasheet
SHF S807 BLinear Broadband Amplifier

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Description
The SHF S807 B is the improved successor to the popular SHF S807 linear driver amplifier. It offers
more bandwidth and a better group delay than the S807. The bandwidth improvement offers operationup to 56 GBaud.
The important features of ultra-fast rise and fall time, high linear output power (P1dB) and high thirdorder intercept point (IP3), render the amplifier well suited for PAM4, optical 16QAM, and OFDM signal
generation applications.
The S807 B is a two-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 itrobust against line voltage ripple.
A feature has been built-in to enable the amplifier gain and crossing to be controlled externally via
software.

Ease of Use
Upon delivery, the amplifier is already pre-set to deliver maximum gain, maximum output amplitude andnominally 50% crossing.
These settings can be modified in an easy to use graphical software interface, as shown below. For
connecting the amplifier to the computer, the USB to I2C converter cable, as well as the required
software are included with each amplifier with no extra charge.
Once new settings are stored on the device the amplifier will remember the settings until further
changes are made. There is no need to connect a computer to the device unless gain, maximum
amplitude or crossing adjustments are to be made.
The software is available for download at www.shf.de .

GUI of the SHF amplifier control software

Available Options
1

01: DC return on input (max. ±1.75 V, max. 35 mA)

02: Built-in bias tee on input (max. ±9 V, max. 220 mA)
03: DC return on output (max. ±1.75 V, max. 35 mA)

1

1

04: Built-in bias tee on output (max. ±7 V, max. 220 mA)

1

MP: Matches the phase of two amplifiers
1The options 01 & 02 or 03 & 04 cannot be combined.
If an option is chosen, the maximum gain might be reduced by up to 1 dB and the low frequency 3 dB Point might be increased up to 75 kHz.

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Specifications – SHF S807 B
Parameter

Unit

SymbolMin

TypMaxConditions

Maximum RF Input Powerin OperationdBm
VPin max41peak to peak voltage

Maximum RF Input Power
without Power SupplydBm
VPin max

102peak to peak voltage

DC Voltage at RF Input

V±9DC Voltage at RF Output

V±7Supply Voltage

VAbsolute Maximum Ratings

Case Temperature

2Tcase8°C

1012400.4 A, reverse voltage protected

50Electrical Characteristics (At 40°C case temperature, unless otherwise specified)High Frequency 3 dB Point

GHzfHIGH

Low Frequency 3 dB Point

kHzfLOWGaindB

S21Max. Gain Reduction

dBOutput Power at 1 dBCompression

dBmVOutput Power at 2 dBCompression
Output Power at 3 dB
Compression

5560
non-inverting

2223-2.5-3P01dB

15
3.5

16410 MHz…20 GHzdBm
VP02dB

174.5

18510 MHz…20GHzdBm
VP03dB

195.6

19.5
610 MHz…20 GHz

3 Order Intercept PointdBm

IP328

Max. RF Input for Linear
OperationdBm
VPin linrd

measured at Pin=-27 dBm-4Control via software interface

peak to peak voltage

peak to peak voltage

peak to peak voltage

-8
0.25

I.e. Pout ≤ P01dB
peak to peak voltage
Pin ≥ - 2 dBm

Max. Output PowerReductiondBCrossing might need to be readjusted
by using the crossing control feature.

1Control via software interface

2

Crossing Control
Range%

Input Return LossdB-4
S11-12-7

4Control via software interface-10-5< 30 GHz< 50 GHz

If operated with heat sink (part of the delivery) at room temperature there is no need for additional cooling.

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Parameter

Unit

SymbolOutput Return LossdBS22Min

TypMaxConditions-12-10< 40 GHz
20%...80%, 3 V ≤ Vout ≤ 4 V

Rise Time/Fall Time

pstr/tf

813.5

Deconvoluted
Full Setup3, 433 V ≤ Vout ≤ 4 VJitterfsGroup Delay Ripple

psPower Consumption

WJRMS

440
550

33, 4580
650

Deconvoluted±50

40 MHz…40 GHz, 160 MHz aperture

Full Setup

39 V supply voltage

Mechanical Characteristics
5

Input Connector

1.85mm (V) female

Output Connector

1.85mm (V) male

345

Measured with the following setup: SHF 613 A DAC -> DUT (SHF S807 B) -> Agilent 86100A with 70 GHz sampling head and precision time base.
Calculation based on typical results of setup without DUT :/=!"=( /(!") −( /) −#!"//) =$ =(( /!") − 11) − 300 '5

Other gender configurations are available on request.
Other connector types, e.g. 2.92mm (K) or Mini-SMP (GPPO) connectors, are also available but may impact the bandwidth and reflection
characteristic.

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Typical S-Parameters, Group Delay and Phase Response

Aperture of group delay measurement: 160 MHz

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Typical Binary Waveforms
Eye Amplitudes: Input ~200 mV ⇒ Output ~3 VMeasurements at 50 and 56 Gbps had been performed using a SHF 613 A DAC in binary mode and an
Agilent 86100A DCA with Precision Time Base Module (86107A) and 70 GHz Sampling Head (86118A).
Slower input signals had been taken from a SHF 611 C DAC. The measurement at 50 Gbps will be partof the inspection report delivered with each particular device.

Input Signal @ 32 Gbps

Output Signal @ 32 Gbps

Input Signal @ 43 Gbps

Output Signal @ 43 Gbps

Input Signal @ 50 Gbps

Output Signal @ 50 Gbps

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Input Signal @ 56 Gbps

Output Signal @ 56 Gbps

Eye Amplitudes: Input ~400 mV ⇒ Output ~5.2 V
The Measurements below had been performed using an SHF 12103A and an Agilent 86100A DCA withPrecision Time Base Module (86107A) and 70 GHz Sampling Head (86118A).

Input Signal @ 56 Gbps

Output Signal @ 56 Gbps

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Typical 4-Level Waveforms
Eye Amplitudes: Input ~200 mV ⇒ Output ~3 V
Measurements at 50 and 56 GBaud had been performed using a SHF 613 A DAC and an Agilent
86100A DCA with Precision Time Base Module (86107A) and 70 GHz Sampling Head (86118A).
Slower input signals had been taken from a SHF 611 C DAC. The measurement at 50 GBaud will bepart of the inspection report delivered with each particular device.

Input Signal @ 32 GBaud

Output Signal @ 32 GBaud, ~3 Vpp

Input Signal @ 43 GBaud

Output Signal @ 43 GBaud, ~3 Vpp

Input Signal @ 50 GBaud

Output Signal @ 50 GBaud, ~3 Vpp

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Input Signal @ 56 GBaud

Output Signal @ 56 GBaud

Eye Amplitude: Input ~300 mV ⇒ Output ~4 V

Input Signal @ 56 GBaud

Output Signal @ 56 GBaud

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Typical Low Frequency Response (<1 MHz)

Typical Saturation power

Top (red): 3 dB compression;
Middle (green): 2 dB compression;
Bottom (blue): 1 dB compression

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Mechanical Drawing with Heat Sink
2x M4x 5 mm

99.9

9.5

2713
26.5
9.5

23.2

12.2

10.4

7.1

GND +9V
0.4A

I2C

10.4

5.5

3.2
3.5

9.9

73
36.5
26.5

9.5

9.9

27

14.3

13

all dimensions in mm

Pin assignment might change if a bias tee option is chosen.
Thermal resistance of heat sink approx. 6 K/W
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.

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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Mechanical Drawing without Heat Sink

23.6

4x M2x 5 mm

9.8

55.4

2110
23.5
35+1

42 -0

2x M2x 4 mm

5.1

21.2

12.4

10.2

27.9

GND +9V0.4A

37.3

24I2C

12.4

539.7
240

5.4

9.8
23.5

55.4

10

all dimensions in mm

Pin assignment might change if a bias tee option is chosen.
Please ensure that adequate cooling of the amplifier is guaranteed.

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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User Instructions
ATTENTION!
Electrostatic sensitive GaAs FET amplifier1.

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 8…12 V, 0.4 A DC power supply and can beconnected 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 ofgreater 50 GHz (V/ 1.85mm attenuators)!

5.

An input signal of about 0.6 Vpp will produce saturated output swing of about 5.6 Vpp.

6.

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

8.

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.

9.

While using a reflective load the output voltage has to be reduced to a safe operating level according
to the magnitudes of the reflections.
ATTENTION: At radio frequencies a capacitive load can be transformed to an inductive one throughtransmission lines! With an output stage driven into saturation this may lead to the immediate
destruction of the amplifier (within a few ps)!

10. The input voltage should never be greater than 1 Vpp equivalent to 4 dBm input power.
The input voltage without DC power supplied to the amplifier should never be greater than 2 Vppequivalent to 10 dBm input power.

SHF reserves the right to change specifications and design without notice – SHF S807 B - V002 – Aug. 10, 2016

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