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-communication.com • Web: www.shf-communication.com

Datasheet
SHF S807 C
Linear Broadband Amplifier

SHF reserves the right to change specifications and design without notice - SHF S807 C - V004 - Nov. 08, 2018

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Description
The SHF S807 C is the RoHS compliant successor to the popular SHF S807 B linear driver amplifier.
The bandwidth offers operation up 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 C 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 it
robust 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 furtherchanges 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-communication.com/software .

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)

04:

Built-in bias tee on output (max. ±7 V, max. 220 mA)MP:Matches the phase of two amplifiers

1

1
1

QHS: Quad Heat Sink, four amplifiers on one heatsink
1The options 01 & 02 or 03 & 04 cannot be combined.
If an option is chosen, the maximum gain and the maximum output power might be reduced by up to 1 dB. The low frequency 3 dB Point might beincreased up to 80 kHz. The DC resistance of an bias tee is about 3 Ω.

SHF reserves the right to change specifications and design without notice - SHF S807 C - V004 - Nov. 08, 2018

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Specifications – SHF S807 CParameter

UnitSymbol

MinTypMax

Conditions

Maximum RF Input Powerin OperationdBm
VPin max

41peak to peak voltage

Maximum RF Input Powerwithout Power SupplydBm
VPin max

102peak to peak voltage

DC Voltage at RF Input

V±9

DC Voltage at RF Output

V±7

Supply 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

kHzfLOWGaindBS21

Max. Gain ReductiondB

Output Power at 1 dB
CompressiondBm
VOutput Power at 2 dB
Compression
Output Power at 3 dB
Compression

55
70
non-inverting

2223

2.5

3

P01dB

14.5
3.3

15
3.6

10 MHz…20 GHzdBm
V

P02dB

16.5
4.2

17
4.5

10 MHz…20GHzdBm
V

P03dB

185

18.5
5.3

10 MHz…20 GHz

3 Order Intercept PointdBm

IP328

Max. RF Input for Linear
Operation

dBm
VPin linrdmeasured at Pin=-27 dBm

4Control via software interface

peak to peak voltage

peak to peak voltage

peak to peak voltage-80.25

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

Max. Output PowerReductiondB

Crossing might need to be readjustedby using the crossing control feature.

1Control via software interface

2Crossing Control
Range%

Input Reflection

dB-4
S11-11-6

4Control via software interface-9-5< 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 C - V004 - Nov. 08, 2018

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UnitSymbol

Output Reflection

dBS22Min

TypMaxConditions-12-10-10-8< 30 GHz< 50 GHz
20%...80%, 3 V ≤ Vout ≤ 4 V

Rise Time/Fall Time

pstr/tf

813.5

Deconvoluted
Full Setup3, 433 V ≤ Vout ≤ 4 VJitterfs

Group Delay Ripple

psPower Consumption

WJRMS440
550

33, 4580
650

Deconvoluted±5040 MHz…40 GHz, 160 MHz aperture

Full Setup

39 V supply voltage

Mechanical Characteristics
5Input Connector

1.85mm (V) female

Output Connector

1.85mm (V) male

345

Measured with the following setup: SHF 613 A DAC -> DUT (SHF S807 C) -> Agilent 86100C with 70 GHz sampling head and precision time base.
Calculation based on typical results of setup without DUT :𝑡𝑟 /𝑡𝑓 𝑑𝑒𝑐𝑜𝑛𝑣𝑜𝑙𝑢𝑡𝑒𝑑 = √(𝑡𝑟 /𝑡𝑓 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝 )2 − (𝑡𝑟 /𝑡𝑓 𝑠𝑒𝑡𝑢𝑝 𝑤/𝑜 𝐷𝑈𝑇 )2 = √(𝑡𝑟 /𝑡𝑓 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝 )2 − 11 𝑝𝑠 2
2𝐽𝑅𝑀𝑆 𝑑𝑒𝑐𝑜𝑛𝑣𝑜𝑙𝑢𝑡𝑒𝑑 = √(𝐽𝑅𝑀𝑆 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝 )2 − (𝐽𝑅𝑀𝑆 𝑠𝑒𝑡𝑢𝑝 𝑤/𝑜 𝐷𝑈𝑇 ) = √(𝐽𝑅𝑀𝑆 𝑓𝑢𝑙𝑙 𝑠𝑒𝑡𝑢𝑝 )2 − 300 𝑓𝑠 2
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 reflectioncharacteristic.

SHF reserves the right to change specifications and design without notice - SHF S807 C - V004 - Nov. 08, 2018

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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 C - V004 - Nov. 08, 2018

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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 thisapplies 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.

1098

Noise Figure [dB]7654321005101520253035404550

Frequency [GHz]SHF reserves the right to change specifications and design without notice - SHF S807 C - V004 - Nov. 08, 2018

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Typical Binary Waveforms
Eye Amplitudes: Input ~250 mV ⇒ Output ~3 VMeasurements at 50 and 56 Gbps had been performed using a SHF 613 A DAC in binary mode and anAgilent 86100C 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 C - V004 - Nov. 08, 2018

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Input Signal @ 56 Gbps

Output Signal @ 56 Gbps

Eye Amplitudes: Input ~450 mV ⇒ Output ~4.8 V
The Measurements below had been performed using an SHF 12103A and an Agilent 86100C 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 C - V004 - Nov. 08, 2018

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Typical 4-Level Waveforms
Eye Amplitudes: Input ~250 mV ⇒ Output ~3 V
Measurements at 50 and 56 GBaud 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).
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 C - V004 - Nov. 08, 2018

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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 C - V004 - Nov. 08, 2018

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Typical Low Frequency Response (<40 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 C - V004 - Nov. 08, 2018

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Mechanical Drawing with Heat Sink
2x M4x 5 mm

99.9

9.5271326.5
9.5

23.2

12.210.4

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/WFor 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 C - V004 - Nov. 08, 2018

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2355
53

Mechanical Drawing with Heat Sink Option QHS

15.2

7.3

7.4

69.1
89.1
109.1
129.1
175.2
190.5

6.3

38
31.7

Ø6.8

6.3
184.1

SHF reserves the right to change specifications and design without notice - SHF S807 C - V004 - Nov. 08, 2018

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Mechanical Drawing without Heat Sink

23.64x M2x 5 mm

9.8

55.4211023.5
35+142 -0

2x M2x 4 mm

5212.475.1221.2

12.4

339.7

9.8

10.2

27.9ncnc

54

GND +9V0.4A

37.3

24I2C

61

5.4

40
23.5

5

5.4

10

all dimensions in mm

Pos.

Connector

12Input
Output34
567nc (optional)
GND+9 V / 0.4 A
2ICnc (optional)

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 C - V004 - Nov. 08, 2018

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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 @ 9V) DC power supply and canbe connected to the supply feed-through filter via an ON / OFF switch.
In case 9 V are applied to the amplifier typically 0.3 A are drawn during operation. However, theamplifier requires more current during start up. This is particularly important in case the current
compliance of a very fast acting voltage source is set too tight. As this can prevent the amplifier fromstarting properly, please allow up to 100% overhead for your current compliance during startup.

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 / 1.85 mm attenuators)!

5.

An input signal of about 0.6 Vpp will produce an output swing of about 5 Vpp. Higher input voltages areleading to waveform degradation.

6.

The amplifier can only be used without damage by connecting a 50 Ohm precision load to the output.

7.

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)!

8.

The input voltage should never be greater than 1 Vpp equivalent to 4 dBm input power.

9.

For the DC-connections flexible cable 0.2…0.5 mm / AWG 24…20 are recommended. A maximum
soldering temperature of 260 °C for 3 seconds is recommended for the feedthrough (positive supply
voltage and bias tee pin). The ground pin requires significantly more heat as it is connected to thesolid housing.

2SHF reserves the right to change specifications and design without notice - SHF S807 C - V004 - Nov. 08, 2018

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