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 C623 A120 Gbps
1:2 Demultiplexer

SHF reserves the right to change specifications and design without notice – SHF C623 A - V001 – November 09, 2018 Page 1/9

Description
The SHF C623 A 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 A (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 A. 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 <100 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 ABA

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 A - V001 – November 09, 2018 Page 2/9

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

VVcc0+6.0

Input Parameters

SHF reserves the right to change specifications and design without notice – SHF C623 A - V001 – November 09, 2018 Page 3/9

Specifications
Parameter

Unit

SymbolMinimum Input Data Rate

Gbps

Rin,minMaximum Input Data Rate

Gbps

Rin,max

Data Input Voltage

mV

Vdata in

Min.

Typ.

Max.

Comment

Input Parameters
10120
400800> 80 Gbps
≤ 80 Gbps
Eye height;
Single-ended;
On scope display

10050Data Input Sensitivity

mV

Vdata inMin. Clock Input Frequency

GHzfin,minMax. Clock Input Frequency

GHzfin.max

60mV

Vclk in550
400

Output Amplitude

mVVout350

Rise / Fall time

pstr/tf

79fsJrms

400

650

Supply Voltage

VVcc

5.2+5.5

Supply Current

mA

Iee

830

950

Power DissipationmW

Pd

4150°C

Tambient

Clock Input Voltage

Eye Amplitude;
Single-ended

5800
800

> 100 Gbps
≤ 100 Gbps
Peak-to-Peak

Output Parameters

Output Jitter, RMS value

1

Eye Amplitude;
Single-ended

400

20 % / 80 %;On scope display

Power Requirements+5

2.5 x 0.7 mm
DC Power Jack

@ VCC = +5V

ConditionsOperating Temperature

11535

Test condition: Input Signal JitterRMS = 230 fs

SHF reserves the right to change specifications and design without notice – SHF C623 A - V001 – November 09, 2018 Page 4/9

Typical Output Eye Diagrams
31

The measurements below had been performed using a SHF 603 A 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 A - V001 – November 09, 2018 Page 5/9

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 A - V001 – November 09, 2018 Page 6/9

Typical Performance
31

The measurements shown below had been performed using a SHF 603 A MUX (PRBS 2 -1), aSHF 11104 A Error Analyzer, a Tektronix DSA8300 with Phase Reference Module (82A04B) and 70 GHz
Sampling Head (80N01) to determine the eye height and jitter contribution of the input signal. In case of-9
the sensitivity measurement the input signal had been reduced until a BER limit of <10 was achieved.
For the clock phase margin measurement, an input signal with an eye height of 100 mV has been applied-9and the phase of the clock signal was varied until the BER reached the 10 limit.

SHF reserves the right to change specifications and design without notice – SHF C623 A - V001 – November 09, 2018 Page 7/9

Outline Drawing – Moduleb ca40
28
104x
Ø

2.7

13.6

12.4

13.6

InInB

A

SHF C623 A
1:2 DEMUX
Clk

3

SHFCommunication
Technologies AG

23.7

USB

3545
54

51
45

XXXXX

+5 V DC

34PortConnector

In

1.85mm (V) female

In1.85mm (V) female

A1.85mm (V) female

BClkaMini-USB1.85mm (V) femalebPower1.85mm (V) femalecFunctional earth (FE)13.6Connector

13.6

Port

SHF reserves the right to change specifications and design without notice – SHF C623 A - V001 – November 09, 2018 Page 8/9

Outline Drawing – Module with Heat Sink

b c

a52.7
10

19.6
6

In

19.6

InB

A

SHF C623 A
1:2 DEMUX
Clk

XXXXX

+5 V DC

70101111

USB111

120
132.4

SHFCommunication
Technologies AG

Port

120

Connector

PortConnector

1.85mm (V) female

aMini-USBIn

1.85mm (V) femalebPowerA

1.85mm (V) femalecFunctional earth (FE)B

1.85mm (V) female

Clk

1.85mm (V) female

37In

SHF reserves the right to change specifications and design without notice – SHF C623 A - V001 – November 09, 2018 Page 9/9