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.de

Datasheet
SHF 616 A
100 GBaud PAM4 Multiplexer

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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Description
The SHF 616 A is a PAM4 Multiplexer operating at symbol rates up to 112 GBaud for use in broadband
test setups and telecom transmission systems. Four single ended serial data streams are multiplexedand combined into one differential PAM4 signal.
With a programmable SHF BPG (e.g. SHF 12105 A) you have full control of the patterns into the MUX.
A single ended clock signal with the same frequency as the input data rate is required to drive the SHF
616 A. For data regeneration purposes all input data signals are re-sampled to mitigate any signal
impairments resulting e.g. from long cables. Therefore, it becomes possible to place the MUX very
close to the DUT. Clock input port and data output ports are AC-coupled. Data input ports are DCcoupled.

Features•••••

Broadband operation up to 112 GBaud
Differential data output, 0.8 V differential output swing (0.4 V in single-ended operation)
Single ended clock and data inputs
Latched input ports
Output amplitude & input threshold level control (remote by software)

Applications•••

100, 200, 400 Gbps and 1 Tbps system evaluation & development
Broadband test and measurement equipment
PAM-N, OFDM, Advanced Modulation Experiments

Block Diagram
OutOutSHF
616 A

PAM4-Mux

USB/LANA

B(MSB) (MSB)

ClkAB(LSB) (LSB)

PowerSupply

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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Ease of Use
Housed in a small benchtop case, this remote head can be easily embedded in the customer’s test
environment close to the DUT.

SHF 616 A

The easy to use software package, SHF BCC Control Center is the most convenient way to control theMUX. The software reads the individual calibration tables of the multiplexers and sets the contribution of
the bias voltages accordingly. The symmetry of the output signal can be set and is displayed in thegraphical user interface (GUI). The duty cycle (clock bias) of the multiplexer stages as well as the input
threshold level for the DC-coupled data inputs can be set. This enables the user to generate a perfectsignal just by a few intuitive clicks.

BCC Control Center - SHF 616 A

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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Absolute Maximum Ratings
Parameter

Unit

SymbolMin.

Typ.

Max.

CommentData Input VoltagemVVdata in900

Peak-to-PeakClock Input Voltage

mVVclk in

900

Peak-to-Peak

External DC Voltage on
RF Clock Input PortVVDCin-10+10AC coupled input

External DC Voltage on
RF Data Input Ports

VVDCin-0.50

DC coupled inputs

External DC Voltage on
RF Output PortsV

VDCout-10+10AC coupled outputs

DC Supply Voltage

VVcc

Unit

SymbolMin. Input Data Rate

Gbps

Rin,minMax. Input Data Rate

Gbps

Rin,max

50

Data Input Voltage

mVVdata in

300

800

Eye Amplitude;
500 mV recommended

External DC Voltage on
RF Data Input Ports

VVDCin-0.50

DC coupled inputs

Min. Clock Input Frequency

GHzfin,min

Max. Clock Input Frequency

GHzfin,max

50

Clock Input Voltage

mVVclk in

300

800

Peak-to-Peak;
500 mV recommended

External DC Voltage on
RF Clock Input PortV

VDCin-10+10AC coupled input

Input Parameters13.0Specifications
Parameter

Min.

Typ.

Max.

CommentInput Parameters
156

156

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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Parameter

UnitSymbol

Min. Output Data Rate

GBaudRout,minMax. Output Data Rate

GBaudRout,max

Min.

Typ.

Max.

CommentOutput Parameters

1mV

Vout

Rise / Fall Time

pstr / tf

Equivalent Output Bandwidth

GHzBW

Differential Output Skew

pstskew

Supply Voltage

VVc

Supply Current

mA

Power Dissipation

Output Voltage

2100

112

330

Eye Amplitude;
Single ended;
DC coupled CML;
Full scale;
Adjustable up to -6 dB

400537620%...80%;
2deconvolved
Derived from Rise Time
3using formula ;-3 dB bandwidth

44
12+12+12.5

Ic10001100

WPd

1213.2

Operating Temperature°C

TambientHeightmm

H

50.8

Widthmm

W221.4Depthmm

D177

Weightgm

1700

General123+11.5

102.1 mm DC Power Jack

@ VC = +12V35

During start up / shut down of the SHF 616 A and turning on / off the RF outputs, voltage spikes up to +0.7 V can occur at the data output ports
Calculation based on typical rise / fall times from oscilloscope data sheet:Calculation based on formula:==() −() =(.)− (3.68,!

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017Page 5/8)

Typical Output Eye Diagrams
31

The measurements below had been performed using a SHF 12104 A Bit Pattern Generator (PRBS 2 1) and a Tektronix DSA 8300 Digital Serial Analyzer (DSA) with Phase Reference Module (82A04B60G) and 70 GHz Sampling Module (80E11). The outputs of the MUX module had been connected
directly to the DSA input.

PAM4 Output Signal Measurement

Out @ 112 GBaud

Out! @ 112 GBaud

Out @ 100 GBaud

Out! @ 100 GBaud

Out @ 64 GBaud

Out! @ 64 GBaud

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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Typical Output Eye Diagrams
31

The measurements below had been performed using a SHF 12104 A Bit Pattern Generator (PRBS 2 1) and an Agilent Digital Communication Analyzer (DCA) with Precision Timebase Module (86107A)
and 70 GHz Sampling Module (86118A). The outputs of the MUX module had been connected directly
to the DCA input.

PAM4 Output Signal Measurement

Out @ 112 GBaud

Out! @ 112 GBaud

Out @ 100 GBaud

Out! @ 100 GBaud

Out @ 64 GBaud

Out! @ 64 GBaud

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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Outline Drawing – SHF 616 A
SHF 616 A

100GBaud PAM4 Multiplexer

PowerOutputs

OnOff50.9Error

OutOut0.5 Vpp Max

0.5 Vpp Max

50 Ω / 1.85 mm Female

221.4

145.4
130.4
100.4
85.4
28.6

7.2

55.4

6 54 3

8.9

177

7

185.2
95.2

228.5

abdc

50 Ω / 1.85 mm Female
12 V / 2A-0.9 V < Vin < +0.4 V

Ethernet

0.9 Vpp Max

USB
A MSB

B MSB

A LSB

B LSB

Clk

Pos.
1Designation
OutputConnector
1.85mm (V) Female

Pos.
aDesignationUSB

2Output

1.85mm (V) Femaleb

GND

3A MSB

1.85mm (V) Female

cEthernet

4B MSB

1.85mm (V) Female

dPower Supply

5A LSB

1.85mm (V) Female

6B LSB

1.85mm (V) Female

7Clock Input

1.85mm (V) Female

all dimensions in mm

SHF reserves the right to change specifications and design without notice - SHF 616 A - V001 – March 30, 2017

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