SHF Communication Technologies AG
Wilhelm-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 C623 B
120 Gbps
1:2 Demultiplexer

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Description
The SHF C623 B is a ROHS compliant 1:2 demultiplexer (DEMUX) operating at data rates up to120 Gbps for use in broadband test setups and telecom transmission systems. It is the ideal counterpart
to the SHF C603 B (MUX).
One single ended or differential serial data stream is accepted by the demultiplexer and converted into
two single ended data signals at a output data rate of 60 Gbps. A single-ended clock signal with afrequency half of the input data rate drives the SHF C623 B. All RF in- and output ports are AC-coupled
and internally terminated with 50 Ohm to GND. Unused in- or output ports should be terminated with 50Ohm.

FeaturesBroadband operation up to 120 Gbps
Differential data input
Data Input Sensitivity <110 mV (single ended)
Single ended data outputs

Applications


100G, 200G, 400G and 1T system evaluation & development
Telecom transmission
Broadband test and measurement equipment

Block Diagram
InInSHF
C623 B

B

A

DemuxClk
Mini-USB+5VFEAccessories
 +5V Power Supply Desktop Adapter
 Functional earth cable Mini-USB cable

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Remote Interface & Software
The DEMUX is controlled by the easy to use software package SHF Control Center (SCC). The DC input
threshold voltages (Data / Inverted Data Bias) can be set and are displayed in the graphical userinterface (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
Data Input Ports

V

VDCin

-3+3AC coupled input

External DC Voltage on
Clock Input Port

VVDCin-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 C623 B - V002 – March 01, 2022

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Specifications
Parameter

Unit

SymbolMinimum Input Data Rate

Gbps

Rin,minMaximum Input Data Rate

Gbps

Rin,max

Data Input Voltage

mVVdata inMin.

Typ.

Max.

Comment

Input Parameters
10120400800

Eye Amplitude;
Single-ended≤ 80 Gbps> 80 …≤ 100 Gbps
> 100 Gbps
Eye height; Singleended; On scopedisplay; See Page 76080110

Data Input Sensitivity

mV

Vdata inMin. Clock Input Frequency

GHzfin,minMax. Clock Input Frequency

GHzfin.max

60

Clock Input Voltage

mVVclk in

550
400

Output Amplitude

mV

Vout

350

Rise / Fall time

pstr/tf

79fs

Jrms

400

650

Supply Voltage

VVcc

5.2+5.5

Supply Current

mA

Iee

830

950

Power Dissipation

mW

Pd4150@ VCC = +5V

50

1.85 mm (V) female

5800
800

> 100 Gbps
≤ 100 Gbps
Peak-to-Peak

Output Parameters

Output Jitter, RMS value

1Eye Amplitude;
Single-ended

400

20 % / 80 %;On scope display

Power Requirements+52.5 x 0.7 mm
DC Power Jack

Mechanical Characteristics
Connectors

ΩDimensions

mmWeightgsee pages 8 & 990Conditions
Operating Temperature

1°CTambient

1535

Test condition: Input Signal JitterRMS = 230 fs

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Typical Output Eye Diagrams
31

The measurements below had been performed using a SHF 603 B MUX (PRBS 2 -1) and a Tektronix
DSA8300 with Phase Reference Module (82A04B) and 70 GHz Sampling Head (80N01). The outputs of thedemultiplexer module had been connected by 10 dB attenuators to the DSA input.

Out A @ 64 Gbps Output Bitrate

Out B @ 64 Gbps Output Bitrate

Out A @ 60 Gbps Output Bitrate

Out B @ 60 Gbps Output Bitrate

Out A @ 50 Gbps Output Bitrate

Out B @ 50 Gbps Output Bitrate

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Out A @ 40 Gbps Output Bitrate

Out B @ 40 Gbps Output Bitrate

Out A @ 32 Gbps Output Bitrate

Out B @ 32 Gbps Output Bitrate

Out A @ 5 Gbps Output Bitrate

Out B @ 5 Gbps Output Bitrate

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Typical Performance
31

The measurements shown below had been performed using a SHF C603 B MUX (PRBS 2 -1), aSHF 11104 A Error Analyzer, a Keysight DCA-X N1000 A with Precision Timebase and 70 GHz Sampling
Head (80N01) to determine the eye height of the input signal. For the sensitivity measurement the input-9signal had been reduced until a BER limit of <10 was achieved.

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Outline Drawing – Moduleb ca40
28104xØ2.7

13.6

12.4

13.6

InIn
B

A

SHF C623 B
1:2 DEMUXClk

3

SHF Communication
Technologies AG+5 V DC

PortConnector

In

1.85mm (V) female

In

1.85mm (V) female

A

1.85mm (V) female

B

1.85mm (V) female

Clk

1.85mm (V) female

13.6

3413.6

23.7

USB3545545145

XXXXX

all dimensions in mmPortConnectoraUSBbPower Supplyc

Functional earth (FE)SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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Outline Drawing – Module with Heat Sink

b c

a52.7
10

19.6
6

In

19.6

InB

A

SHF C623 B
1:2 DEMUX

Clk

XXXXX

+5 V DC

70101
111

USB111

120
132.4

SHF Communication
Technologies AGConnector

In120

PortConnector

1.85mm (V) female

aUSB

In

1.85mm (V) femalebPower SupplyA

1.85mm (V) femalecFunctional earth (FE)B

1.85mm (V) female

Clk1.85mm (V) female

37Portall dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF C623 B - V002 – March 01, 2022

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