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.de • Web: http://www.shf.deDatasheet
SHF 623 B120 Gbps
1:2 Demultiplexer

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 1/10

Description
The SHF 623 B is a ROHS compliant 1:2 Demultiplexer operating at data rates up to 120 Gbps for use inbroadband test setups and telecom transmission systems. An 120 Gbps single ended or differential serial
data stream is accepted by the multiplexer and converted into two single ended data signals at a output
data rate of 60 Gbps. A single ended clock signal with a frequency half of the input data rate drives theSHF 623 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 50 Ohm.

Features

Broadband operation up to 120 Gbps
Differential data input
Data Input Sensitivity <100 mV
Single ended data outputs
Bias BoardApplications


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

Block Diagram
InInSHF623 BBA

DemuxClkBiasVee2BiasBoard-5V

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 2/10

Bias Board
At delivery, the bias board is mounted on a common base plate, together with the SHF 623 B DEMUX.
When using the bias board only one supply voltage of -5V needs to be applied; all operating voltages willbe provided by the bias board.
With the factory settings all bias voltages are set to optimum / maximum output voltage. However, if
required the customer can adjust input data bias voltages “DB1” and “DB2” with the appropriate trim
potentiometers on the bias board.
For system applications it is possible to remove the bias board. In that case the operating voltages haveto be supplied by the customer’s circuitry.

Not Used
Data Bias Adjust “DB1”Data inv. Bias Adjust “DB2”
Not Used-5V

Absolute Maximum Ratings
Parameter

UnitSymbolMin.

Typ.

Max.

Comment

Data Input Voltage

mVVdata in

900

Peak-to-Peak

Clock Input Voltage

mVVclk in

900

Peak-to-Peak

External DC Voltage on
Data Input Ports

VVDCin-3+3AC coupled input

External DC Voltage on
Clock Input PortV

VDCin-6+6AC coupled input

External DC Voltage on
RF Output PortsV

VDCout-6+6AC coupled output

DC Supply Voltage

VVee-5.50

Input Parameters

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 3/10

Specifications
Parameter

UnitSymbol

Minimum Input Data Rate

Gbps

Rin,minMaximum Input Data Rate

Gbps

Rin,max

Data Input Voltage

mVVdata in

Min.

Typ.

Max.

CommentInput Parameters
10120400

800

1207050

Eye Amplitude> 110 Gbps
> 64 Gbps≤ 64 Gbps
Eye height;
On scope display

Data Input Sensitivity

mV

Vdata inMin. Clock Input Frequency

GHzfin,minMax. Clock Input Frequency

GHzfin.max60

Clock Input Voltage

mVVclk in

300

400

Output Amplitude

mVVout350

400

Rise / Fall time

pstr/tf

6.59fs

Jrms

400

600

Supply Voltage

VVee-5-4.8

Supply CurrentmAIee

510600Power Dissipation

mWPd2550

Input Data Bias

VDB1-3.3-1,650

Input inverted Data Bias

VDB2-3.3-1,650°C

Tambient

155800Peak-to-Peak

Output Parameters

Output Jitter, RMS value

1

Eye Amplitude;
Single ended
20% / 80%;
On scope display

Power Requirements-5.2@ VEE = -5V;
incl. Bias Board

Bias Voltages

Conditions
Operating Temperature

135

Test condition: Input Signal JitterRMS = 230 fs

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018Page 4/10

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 6 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 623 B - V002 – March 22, 2018

Page 5/10

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 @ 2 Gbps Output Bitrate

Out B @ 2 Gbps Output Bitrate

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 6/10

Typical Performance
31

The measurements shown below had been performed using a SHF 603 A MUX (PRBS 2 -1), a
SHF 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-9
and 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 623 B - V002 – March 22, 2018

Page 7/10

Outline Drawing – Module3459.1

29.1

13.8
5.08

12.4

12.4

4 x 5.08

1012.49.14x Ø2.7
InAIn

SHF 623 B

B

Clk

2929

XXXXX

353835DEMUX

DB1 DB2PortConnector

In

1.85mm (V) female

283440In

1.85mm (V) female

A

1.85mm (V) female

B

1.85mm (V) female

Clk

1.85mm (V) female

PinDesignation

1nc

2

DB1

3

DB2

4nc

5-5V

19-5V

33

SHF AG Berlin

4.6
9.7
19.5

All dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 8/10

Outline Drawing – “Module + Bias Board”- Assembly
14.1
105.34x Ø3.4InAIn

SHF 623 B

B

DEMUX
XXXXX

Clk8077

SHF AG Berlin

354

64

-5V64

DB1 DB253440Connector

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

14.1

Port

14.1

24.5

All dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 9/10

Outline Drawing – “Module + Bias Board”- Assemblywith Heat Sink
20.152.7
10116InAIn

SHF 623 B

B

DEMUX
XXXXX

Clk

SHF AG Berlin-5V

93708393109
114.4120

DB1 DB2Connector

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

12037

PortAll dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF 623 B - V002 – March 22, 2018

Page 10/10