SHF Communication Technologies AGWilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany
Phone +49 30 772051-0 • Fax +49 30 7531078
E-Mail: sales@shf-communication.com • Web: www.shf-communication.com

Datasheet
SHF C603 B128 Gbps
2:1 Multiplexer

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 1/13

Description
The SHF C603 B is a 2:1 Multiplexer operating at data rates up to 128 Gbps for use in broadband test
setups and telecom transmission systems. Two single ended serial data streams of up to 64 Gbps are
accepted by the multiplexer and converted into one differential data signal of up to 128 Gbps. A single
ended clock signal with a frequency half of the output data rate drives the SHF C603 B. All RF in- andoutput ports are AC-coupled and internally terminated with 50 Ohm to GND. Unused in- or output ports
should be terminated with 50 Ohm.

Features






Broadband operation up to 128 Gbps
Differential data output, 500 mV single ended output swingSingle ended clock and data inputs
Latched (re-timed and re-shaped) input ports
Output amplitude, output bandwidth & input threshold level control (remote by software)
USB interfaceApplications


100 Gbps (100GbE), 200 Gbps (200GbE), 400 Gbps (400GbE) & 1 Tbps (TbE) system evaluation
Telecom transmission
Broadband test and measurement equipment

Available Option:
WF: 1.0 mm female connectors at the data output ports instead of 1.85 mm connectors

Block Diagram
OutOutSHF
C603 B

BAMuxClk+5VUSB

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 2/13

Remote Interface & Software
The MUX is controlled by the easy to use software package SHF Control Center (SCC). The amplitude,
duty cycle, output signal speed (Trim) and the RF output state (on/off) can be set and are displayed in
the graphical user interface (GUI).

SHF Control Center (SCC)

Absolute Maximum Ratings
Parameter

Unit

Symbol

Min.

Typ.

Max.

Comment

Data Input Voltage

mV

Vdata in900

Peak-to-Peak

Clock Input Voltage

mVVclk in

900

Peak-to-Peak

External DC Voltage on
RF Input PortsVVDCin-6+6AC coupled input

External DC Voltage on
RF Output Ports

VVDCout-6+6AC coupled output

DC Supply Voltage

VVcc

0+6Input Parameters

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 3/13

Specifications
Parameter

Unit

SymbolMin.

Data Input Voltage

mVVdata in

300

Minimum Clock Input
FrequencyGHzfin, minMaximum Clock Input
FrequencyGHzfin, max

64

Clock Input VoltagemVpp

Vclk in300

Minimum Output Data Rate

Gbps

Rout,minMaximum Output Data Rate

GbpsRout,max

128

Maximum Output Voltage

mVVout400

Rise / Fall time

psfsTyp.

Max.

Comment

Input Parameters800
1.5800

Output Parameters

Output Jitter, RMS value

13@ 500 mVpp clock input@ 500 mVpp clock input

500

600

single ended,adjustable up to -6 dB

tr/tf

4

5.5

20 % / 80 %;@Trim=100 %;on scope display

Jrms

350
450

450
550

≤ 100 Gbps
> 100 Gbps
on scope display

5.2

+5.5

2.5 x 0.7 mm
DC Power JackPower Requirement
Vcc

Supply Voltage

V

Supply Current

mA

Icc

790

Power Dissipation

WPd

4.1

@ VCC = +5 V+5Mechanical Characteristics
Input Connectors

Ω50

1.85 mm (V) female

Output Connectors

Ω50

1.85 mm (V) female

Dimensions

mmWeightgsee pages 9/1090430

without heat sinkwith heat sinkConditions
Case Temperature

122°CTcase

1045

Test condition: Clock Input Signal JitterRMS <150 fs
Tr / Tf of the output data signal can be slightly decreased by applying additional cooling measures like heat sinks or cooling fans.

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 4/13

Typical Output Eye Diagrams
31

The measurements below had been performed using a SHF 12105 A Bit Pattern Generator (PRBS 2 -1)
and a Tektronix DSA 8300 Digital Serial Analyzer (DSA) with Phase Reference Module (82A04B-60G) and70 GHz Sampling Module (80E11). The outputs of the MUX module had been connected directly to theDSA input.

Out @ 128 Gbps

Out inv. @ 128 Gbps

Out @ 100 Gbps

Out inv. @ 100 Gbps

Out @ 64 Gbps

Out inv. @ 64 Gbps

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 5/13

Output Amplitude Adjustment

100 Gbps @ 500 mV

100 Gbps @ 400 mV

100 Gbps @ 300 mV

100 Gbps @ 200 mV

100 Gbps @ 150 mVSHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 6/13

Output Signal Speed (TRIM) - Adjustment
The rise and fall time of the output signal can be varied with the TRIM function. It is possible to reduce theovershoot of the signal edges at lower operating bit rates, shown at 60 Gbps below.

60 Gbps @ TRIM = 100 %60 Gbps @ TRIM = 50 %60 Gbps @ TRIM = 25 %60 Gbps @ TRIM = 0 %SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 7/13

Oscilloscope comparison
20The measurements below had been performed using a SHF 12105 A Bit Pattern Generator (PRBS 2 -1), aTektronix DSA 8300 Digital Serial Analyzer (DSA) with Phase Reference Module (82A04B-60G) and 70 GHz
Sampling Module (80E11) and a Keysight DCA N1000A with Precision Timebase and 122 GHz Sampling
Module (N1046A). The outputs of the MUX module had been connected directly to the DSA/DCA input.
Measurements with the Keysight DCA will not be part of the inspection report delivered with each particulardevice.
Tektronix DSA / BW = 70 GHz
80 mV/div

Keysight DCA / BW = 122 GHz
100 mV/div

100 mV/div

2 ps/div

138 Gbps measurement

2 ps/div

2 ps/div

138 Gbps measurement

138 Gbps measurement+ Linear FFE (7-Tap with 2 pre cursors)

80 mV/div

100 mV/div

2 ps/div

128 Gbps measurement

100 mV/div

2 ps/div

2 ps/div

128 Gbps measurement

128 Gbps measurement+ Linear FFE (7-Tap with 2 pre cursors)

80 mV/div

100 mV/div

100 mV/div

2.5 ps/div

100 Gbps measurement

2.5 ps/div

2.5 ps/div

100 Gbps measurement

100 Gbps measurement+ Linear FFE (7-Tap with 2 pre cursors)

80 mV/div

100 mV/div

100 mV/div

4.0 ps/div

4.0 ps/div

64 Gbps measurement

64 Gbps measurement

4.0 ps/div

64 Gbps measurement+ Linear FFE (7-Tap with 2 pre cursors)

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 8/13

Output signals with recommended output amplifier

The measurements below had been performed using a SHF 12105 A Bit Pattern Generator
13(PRBS 2 -1), a Keysight DCA N1000A with Precision Timebase and 122 GHz Sampling Module (N1046A). The
outputs of the MUX module had been connected directly to the amplifier input. The output of the amplifier had
been connected with a 20 dB attenuator to the DCA input.

Output SHF M827 B –VMVF

Output SHF C603 B
100 mV/div

450 mV/div

450 mV/div
mV/div

2.5 ps/div

2.5 ps/div

2.5 ps/div

100 Gbps measurement

100 Gbps measurement

100 Gbps measurement

Eye Amplitude = 500 mV

Eye Amplitude = 1700 mV+ Linear FFE (8-Tap with 2 pre cursors)

100 mV/div

450 mV/div

450 mV/div
mV/div

2.0 ps/div

2.0 ps/div

2.0 ps/div

128 Gbps measurement

128 Gbps measurement

128 Gbps measurement

Eye Amplitude = 500 mV

Eye Amplitude = 1500 mV+ Linear FFE (8-Tap with 2 pre cursors)

For more information about SHFs amplifiers, please refer to:https://www.shf-communication.com/products/rf-broadband-amplifiers/

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 9/13

Outline Drawing – Moduleb ca40
28104xØ

2.7

13.6

12.4

13.6

OutOutBASHF C603 B
2:1 MUXClk3

SHF Communication
Technologies AG23.7

USB

35
45
54

51
45

XXXXX

+5 V DC

34PortConnector

Out1.85mm (V) femaleOut

1.85mm (V) female

A

1.85mm (V) female

BClka

Mini-USB

1.85mm (V) female

bPower

1.85mm (V) femalecFunctional earth (FE)13.6Connector

13.6

Port

all dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 10/13

Outline Drawing – Module with Heat Sink
b c

a52.7
10

19.66

Out

19.6

OutB

A

SHF C603 B
2:1 MUX

Clk

XXXXX

+5 V DC

70101
111

USB111

120
132.4

SHF Communication
Technologies AGPort

120

Connector

Port

Connector

1.85mm (V) female

aMini-USBOut

1.85mm (V) female

bPowerA

1.85mm (V) femalecFunctional earth (FE)B

1.85mm (V) female

Clk

1.85mm (V) female

37

Out

all dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 11/13

Outline Drawing – Module-Option WFb ca

40
28
104x
Ø

2.7

13.6

12.4

13.6

OutOutBASHF C603 B
2:1 MUXClk

3

SHF Communication
Technologies AG23.7

USB

35
45
54

51
45

XXXXX

+5 V DC

34

PortConnector

Out1.00mm (W) femaleOut

1.00mm (W) female

A

1.85mm (V) female

BClka

Mini-USB

1.85mm (V) female

bPower

1.85mm (V) femalecFunctional earth (FE)13.6Connector

13.6

Port

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 12/13

Outline Drawing – Module with Heat Sink -Option WFb ca52.7
1019.6
6

Out19.6

OutB

ASHF C603 B
2:1 MUX

Clk

XXXXX

+5 V DC

70101
111

USB

111

120
132.4

SHF Communication
Technologies AGPort

120

Connector

Port

Connector

1.00mm (W) female

aMini-USB

Out

1.00mm (W) female

bPowerA

1.85mm (V) femalecFunctional earth (FE)B

1.85mm (V) female

Clk

1.85mm (V) female

37

Out

SHF reserves the right to change specifications and design without notice – SHF C603 B - V002 – September 01, 2022 Page 13/13