Data Sheet SHF T850 B
SHF Communication Technologies AG

Data SheetSHF T850 BBroadband Amplifier

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V001 - Mar. 17, 2023 - Page 1

Data Sheet SHF T850 B
SHF Communication Technologies AGDescription
The SHF T850 B is a RoHS compliant ultra-broadband RF amplifier with a small footprint and a bandwidth of
more than 100 GHz.
A distributed amplifier design is employed using our monolithic microwave integrated circuit (MMIC) insidespecial carriers to achieve the ultra-wide bandwidth.
This extreme bandwidth offers the capability to amplify binary signals of more than 100 GBaud while its
good linearity enables this amplifier to drive modulators and lasers for PAM, optical QAM, OFDM andanalog signals.

Ease of Use
Only a single 5 V supply is needed for operation.

Options
04:

Built-in bias tee on output (max. ±5 V, max. 150 mA)1MP:

Matches the phase of two amplifiers

QHS:

Quad Heat Sink, four amplifiers on one heatsink

1If this option is chosen, the maximum gain and the maximum output power might be reduced by up to 1 dB. The output reflection might beincrease by 1 dB. The DC resistance of a bias tee is about 6 Ω.

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 2

Data Sheet SHF T850 B
SHF Communication Technologies AGSpecifications
Absolute Maximum Ratings
Parameter
Maximum RF Input

UnitdBmV

SymbolMin

TypMax4Pin max

1

DC Voltage at RF Input

V±5

DC Voltage at RF Output

V±5

Positive Supply Voltage

VCase Temperature°C

4.7Tcase

Comment106.045

peak to peak voltagecurrent depends on voltage
typ. 0.4 A @ 5.0 V , allow 1 A

55

Electrical Characteristics (At 45°C case temperature, unless otherwise specified)Parameter

Unit

SymbolMin

High Frequency 3 dB Point

GHz

fHigh

100

Low Frequency 3 dB Point

kHz

fLow

Gain

dB

S21

Input Reflection

Output Reflection

dBdB

TypMaxComment
measured at Pin=-20 dBm

100
10measured at Pin=-20 dBm
measured at Pin=-20 dBm @ 500 MHz

S11

S22

Maximum Output Eye
Amplitude for LinearOperationV2Power Consumption

W2-12< 50 GHz-10< 80 GHz-7< 100 GHz-12< 40 GHz-10< 70 GHz-8< 100 GHzSHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 3

Data Sheet SHF T850 B
SHF Communication Technologies AG

Mechanical Characteristics
Parameter

UnitSymbol

Min

TypMaxConditions

Input Connector

1.0 mm female

Output Connector

1.0 mm male

Weight2g2

2

35

without heatsink

80

with single heatsink

Other gender configurations are available on request.

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 4

Data Sheet SHF T850 B
SHF Communication Technologies AG

Typical S-Parameters

Aperture of group delay measurement: 160 MHz

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V001 - Mar. 17, 2023 - Page 5

Data Sheet SHF T850 B
SHF Communication Technologies AG

Typical Waveforms
The measurements below had been performed using a SHF 12105 A Bit Pattern Generator, a PAM-MUX ora DAC and one of the scopes mentioned below. The outputs of the SHF module had been connected
directly to the amplifier input. The output of the amplifier had been connected with a 20 dB attenuator(SHF ATT110 A) to the scope's input.
Please note that only the measurements taken with the Tektronix DCA DSA8300 will be part of theinspection report.

Measurements with:
 SHF 616 C PAM-MUX generating PAM4 signals (PRBS 213-1)
 Keysight DCA N1000A, Precision Timebase & 122 GHz Sampling Module (N1046A)
 Linear FFE (7-Tap with 2 pre cursors) applied

100 GBaud (200 Gbps) 470 mV Input Signal

100 GBaud (200 Gbps) 1.65 V Output Signal

112 GBaud (200 Gbps) 470 mV Input Signal

112 GBaud (200 Gbps) 1.65 V Output Signal

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 6

Data Sheet SHF T850 B
SHF Communication Technologies AGMeasurements with:
 SHF 616 C PAM-MUX generating PAM4 signals (PRBS 231-1)
 Tektronix DCA DSA8300 with Phase Reference 82A04B and Sampling Head 80E11
 No Filter applied

100 GBaud (200 Gbps) 450 mV Input Signal

100 GBaud (200 Gbps) 1.5 V Output Signal

112 GBaud (224 Gbps) 430 mV Input Signal

112 GBaud (224 Gbps) 1.44 V Output Signal

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 7

Data Sheet SHF T850 B
SHF Communication Technologies AGMeasurements with:
 SHF 616 C PAM-MUX generating binary signals (PRBS 213-1)
 Keysight DCA N1000A, Precision Timebase & 122 GHz Sampling Module (N1046A)
 Linear FFE (7-Tap with 2 pre cursors) applied

100 Gbps 450 mV Input Signal

100 Gbps 1.6 V Output Signal

112 Gbps 430 mV Input Signal

112 Gbps 1.5 V Output Signal

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 8

Data Sheet SHF T850 B
SHF Communication Technologies AG

Measurements with:
 SHF 616 C PAM-MUX generating binary signals (PRBS 231-1)
 Tektronix DCA DSA8300 with Phase Reference 82A04B and Sampling Head 80E11
 No Filter applied

100 Gbps 450 mV Input Signal

100 Gbps 1.55 V Output Signal

112 Gbps 430 mV Input Signal

112 Gbps 1.44 V Output Signal

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 9

Data Sheet SHF T850 B
SHF Communication Technologies AGMechanical Drawing with Heat Sink
122xM2x57.3mm

12.119.4ncnc+5 V

GND

4.1

555059222

SHF

54.7

SHF T850 B

101011 dB

100 kHz - 100 GHz

4.8
31.8

2230

4.8

all dimensions in mm

4.8
5.08
3x 5.08

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 thatadequate 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 theheat sink. Please note, thermal gap pad is used between the heat sink and the amplifier housing.

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 10

Data Sheet SHF T850 B
SHF Communication Technologies AG

Mechanical Drawing without Heat Sink
1219.42xM
2x2.55mm

12.14x5.7

2Mncnc+5 V

GNDruthSHF T850 B

47.8

SHF

2159.81311 dB

100 kHz - 100 GHz

101054.7555059222

5152230all dimensions in mm
4.8
5.08
3x 5.08

Please ensure that adequate cooling of the amplifier is guaranteed.

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 11

Data Sheet SHF T850 B
SHF Communication Technologies AG

User Instructions
Electrostatic sensitive device
1.

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

2.

First make the connections between amplifier, signal source and a 50 Ohm output load before
supplying DC power to the amplifier!

3.

The supply voltage can be taken from any regular 4.7…6 V, 1 A DC power supply and can be connectedto the supply feed-through filter via an ON / OFF switch. Do not increase the supply voltage slowly
from 0!

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 100 GHz (1.0 mm attenuators)!

5.

While using a reflective load the output voltage has to be reduced to a safe operating level according
to the magnitudes of the reflections.

6.

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)!

7.

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

8.

For the DC-connections flexible cable 0.2 … 0.5 mm2 / AWG 24 … 20 are recommended. A maximum
soldering temperature of 260 °C for 3 seconds is recommended for the feed-through. The ground pin
requires significantly more heat as it is connected to the solid housing.

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 12

Data Sheet SHF T850 B
SHF Communication Technologies AG

SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23 D | 12277 Berlin | Germany+49 30 772 051 0sales@shf-communication.com
www.shf-communication.com

SHF reserves the right to change specifications and design without notice
V001 - Mar. 17, 2023 - Page 13