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: http://www.shf-communication.com

Datasheet
SHF 613 A
60 GBaud 3-Bit DAC

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Description
The SHF 613 A is a 3-Bit Digital-to-Analog Converter (DAC) operating at symbol rates up to60 GBaud for use in broadband test setups and telecom transmission systems. Three single ended
serial data streams of up to 60 Gbps are accepted by the DAC and converted into one differential
8-level data signal of up to 60 GBaud. By using two input ports only it is possible to generate 4-level
output signals. A single ended clock signal with the same frequency as the data rate drives the SHF
613 A. Thus the baud rate of the resulting PAM signal is as fast as the sample rate of the system.
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 DAC very
close to the DUT. All RF input and output ports are AC-coupled.

Features







Broadband operation up to 60 GBaud
Output baud rate = sample rate
Differential data output, 600 mV single ended output swing
Single ended clock and data inputs
Latched input ports
Output level control
Bias BoxApplications


100G, 200G and 400G system evaluation & development
OC-768 / STM-256 applications
Telecom transmission

Fibre Channel
Broadband test and measurement equipment®

Block Diagram
OutOutSHF
613 A

D1

D2(MSB)

3-Bit DACClk

D0(LSB)
Bias 1/2 (D0...D2) Vee
6BiasBoxUSB

®

+12V

Fibre Channel is a registered trademark of the Fibre Channel Industry Association

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Module Description
At delivery, the Bias Box SHF 88120 B is mounted on a common base plate, together with the SHF
613 A 3-Bit DAC (Fig.1). All bias voltages are provided by this Bias Box which is controlled by a PCvia a USB interface. The easy to use software package is a complementary part of each delivery.
For system applications it is possible to remove the Bias Box. In that case the operating voltages
have to be supplied by the customer’s circuitry. It is recommended to use the Bias Box only with thedelivered power supply. Using other power supplies can damage the Bias Box.
The provided heat sink can be disassembled by the customer. In this case it is required to provide
other cooling measures to ensure that the maximum case temperature specified on page 6 will notbe exceeded.

Fig. 1: “SHF 613 A + Bias Box”-AssemblyOption CaseWith Option Case (Fig.2) the SHF 613 A DAC module, the power supplies, cooling measures andthe Mini-SMP to 1.85 mm panel adaptors are housed in a small benchtop case that can be easily
embedded in the customer’s test environment.
With “Option Case Dual Channel” one common clock signal has to be applied externally and drives
both DACs.

Fig. 2: SHF 613 A – incl. Opt. Case

Configurations for Option Case Single Channel: One DAC module, power supplies, cooling measures and 1.85 mm
panel adaptors are housed in a small benchtop case.
 Dual Channel: Two DAC modules, power supplies, cooling measures and 1.85 mm
panel adaptors are housed in a small benchtop case.

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Ease of Use
The easy to use software package, SHF 600 Series Control is the most convenient way to control theDAC. The software reads the individual calibration tables of the DAC and sets the contribution of thebias voltages accordingly. The amplitude of the individual eye openings can be set and is displayed inthe graphical user interface (GUI). This enables the user to generate a perfect signal just by a few
intuitive clicks.

Fig. 3: “SHF 600 Series Control” – GUI

With Option Case, the software package, SHF BCC Control Center is the most convenient way tocontrol the DAC. The software reads the individual calibration tables of the DAC and sets thecontribution of the bias voltages accordingly. The amplitude of the individual eye openings can be set
and is displayed in the graphical user interface (GUI).

Fig. 4: “SHF BCC Control Center” – GUIAt delivery, the software package for a MS Windows installation including a 1.5m USB cable will beprovided. Control software for other operating systems is available on request.
SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Specifications
Parameter

Unit

SymbolMin.

Typ.

Max.

Data Input Voltage

mVpp

Vdata in

300

500

800

Clock Input Frequency

GHzfin1

Clock Input VoltagemVpp

Vclk in300

Minimum Output Data Rate

GBaudRout,min

Maximum Output Data Rate

GBaudRout,max60

Output Amplitude

mV

Vout

590

Rise- / Fall Time

pstr/tf

Equivalent Output Bandwidth

GHzBW

31

36+11.5+12+12.5
540

CommentInput Parameters
Clock input
amplitude = 500mV

60500

800

Data input
amplitude = 500mV

Output Parameters
1730

850

Single ended, full scale,adjustable up to -6 dB,
see table on page 5

6.1

7.1

20%...80%,
1deconvolved
Derived from Rise Time2
using formula ,-3 dB bandwidthPower Requirements (incl. Bias Box)
Supply Voltage

VVee

Supply CurrentmA

Iee520Power Dissipation

WPd

6.2

@ VEE = +12V

Power Requirements (DAC-Module only)

12

Supply Voltage

VVee

Supply Current

mAPower Dissipation

W-5.2-5-4.8

Iee

1000

1100

Pd

5@ VEE = -5V

Calculation based on typical rise/fall times from oscilloscope data sheet: 𝑡𝑟 𝑑𝑒𝑐𝑜𝑛𝑣𝑜𝑙𝑣𝑒𝑑 = √(𝑡𝑟 𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑 )2 − (𝑡𝑟 𝑜𝑠𝑐𝑖𝑙𝑙𝑜𝑠𝑐𝑜𝑝𝑒 )2 = √(𝑡𝑟 𝑚𝑒𝑎𝑠. )2 − (3.68 𝑝𝑠)2
Calculation based on formula: 𝐵𝑊 =0,22
𝑇𝑟

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Power Requirements (with Option Case Single Channel)
Supply Voltage

V

Vc

Supply Current

mA

Power Dissipation

W-11.5+12+12.5

2.1 mm DC Power JackIc

800

900

Pd

9.610.8@ VC = +12V+12+12.5

2.1 mm DC Power JackPower Requirements (with Option Case Dual Channel)
Supply Voltage

V

Vc

Supply Current

mA

Ic

1450

1600

Power Dissipation

W

Pd

17.4

20

Bias Adjust 1 for D0, D1 & D2

V

VBias1-3.30

Bias Adjust 2 for D0, D1 & D2

V

VBias2-3.30°C

Tcase

1045-11.5@ VC = +12V

Bias VoltagesConditions
Case Temperature

3

Typical Output Amplitudes
Below mentioned values assume no attenuation to be set in the control software. The output
amplitude of the DAC can be reduced by 0 to -6 dB by making the appropriate setting in the control
software.

Output Amplitude
Input D2(MSB)

Input D1

Input D0(LSB)

Minimum Output
Amplitude [mV]Maximum Output
Amplitude [mV]

--On

80

130-

On-

160

240

On--350480

The typical output amplitude of a multilevel signal can be calculated by accumulating the typicaloutput amplitudes of all applied input ports of the DAC as shown in the table above. Thus the fullscale output swing (all inputs active) accumulates as follows:

On3

On

On

590

850

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 613 A - V004 – October 31, 2019

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Typical Output Eye Diagrams
The measurements below had been performed using a SHF 12104 A Bit Pattern Generator (PRBS312 -1) and a Tektronix DSA 8300 Digital Serial Analyzer (DSA) with Phase Reference Module(82A04B-60G) and 70 GHz Sampling Module (80E11). The outputs of the DAC module had beenconnected directly to the DSA input with a 6 dB attenuator.

4-Level Output Signal Measurement

Out @ 60 GBaud

Out! @ 60 GBaud

Out @ 56 GBaud

Out! @ 56 GBaud

Out @ 43 GBaud

Out! @ 43 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019Page 7/18

Out @ 32 GBaud

Out! @ 32 GBaudOut @ 28 GBaud

Out! @ 28 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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8-Level Output Signal Measurement

Out @ 60 GBaud

Out! @ 60 GBaud

Out @ 56 GBaud

Out! @ 56 GBaud

Out @ 43 GBaud

Out! @ 43 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

Page 9/18

Out @ 32 GBaud

Out! @ 32 GBaud

Out @ 28 GBaud

Out! @ 28 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Typical Output Eye Diagrams
The measurements below had been performed using a SHF 12104 A Bit Pattern Generator (PRBS312 -1) and an Agilent Digital Communication Analyzer (DCA) with Precision Timebase Module(86107A) and 70 GHz Sampling Module (86118A). The outputs of the DAC module had beenconnected directly to the DCA input with a 6 dB attenuator.

4-Level Output Signal Measurement

Out @ 60 GBaud

Out! @ 60 GBaud

Out @ 56 GBaud

Out! @ 56 GBaud

Out @ 43 GBaud

Out! @ 43 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Out @ 32 GBaud

Out! @ 32 GBaud

Out @ 28 GBaud

Out! @ 28 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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8-Level Output Signal Measurement

Out @ 60 GBaud

Out! @ 60 GBaud

Out @ 56 GBaud

Out! @ 56 GBaud

Out @ 43 GBaud

Out! @ 43 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Out @ 32 GBaud

Out! @ 32 GBaud

Out @ 28 GBaud

Out! @ 28 GBaud

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Outline Drawing - Modulebcdeghij

4.6

9.1

14.8
9.7
9.1

af

3.8
5.08
4x 5.08

GND

109.1

9.1
21

12.3

4x Ø2.7
OUT

D2(MSB)

6

OUT

D1

3

SHF 613 A
3-Bit DAC

48
45
39
29

XXXXX
SHF AG Berlin

39

D0(LSB)

5Clk

Bias1
D2

Bias1
D1

Bias2
D2

Bias2
D1-5V

4.7

3Bias1
D0
Bias2
D01942834
4019.59.5

9.5

All dimensions in mmPortabDesignation

Bias 1DOcde

Bias 1 Bias 1
D2D1fgBias 2
DOi

Bias 2 Bias 2
D2
D1

Port12345

6Designation

OutOut

D1

Clk

D0

D2(LSB)(MSB)

Connectorhj-5V

1.85mm (V) Female

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Outline Drawing – “Module + Bias Box”- AssemblyUSB

12V DC

Module15.1

4x Ø3.4OUT15.1

OUT

D2(MSB)D1

SHF 613 A
3-Bit DAC

D0(LSB)

XXXXX

Bias1
D1Bias2
D1-5V

Communication
Technologies AG10292

Bias1
D2
Bias2
D2Clk118112

Bias1
D0
Bias2
D0SHF

82102

123.4

SHF AG Berlin

SHF 88120 B
Bias BoxXXXXXUSB

12V DC

4046

Baseplate

3.6
647
10

Bias Box

25.6
32.7

15.1

All dimensions in mm

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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38.537

Outline Drawing – “Module + Bias Box”- Assemblywith Heat Sink52.7
501021.1

21.1
6Heatsink

OUT

Base plate

OUT

D2(MSB)D1

SHF 613 A
3-Bit DAC

D0(LSB)

XXXXX

Bias1
D0Bias1
D2Bias1
D1Bias2
D0Bias2
D2Bias2
D1

Clk-5V

7083

SHF

Communication
Technologies AG103
93120

103

124.4

SHF AG Berlin

SHF 88120 B
Bias Box
XXXXX

USB

12V DC120

All dimensions in mm

SHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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Outline Drawing – SHF 613 A with Option CaseSHF 613 A

3-Bit Digital to Analog Converter

Power

Out 1

Out 1Out 2

Out 20.8 Vpp Max

0.8 Vpp Max

0.8 Vpp Max

0.8 Vpp Max

Outputs

OnOff50,8Error

50  / 1.85 mm Female

221,4137,5122,5107,592,561
4147,57,226,210,3177

5 6 7 8 9 10 1157,567,5

14

3228,3117,5127,5ab

Ethernet

DAC 212 V / 2A

DAC 150  / 1.85 mm FemaleUSB

0.8 Vpp Max

0.8 Vpp Max

D1 In

D2 In

0.8 Vpp Max

D0 In

0.8 Vpp Max

Clk In0.8 Vpp Max

D2 In

0.8 Vpp Max

0.8 Vpp Max

D1 In

D0 InPos.
1Designation
Out 1Connector
1.85mm (V) Female

Pos.
aDesignation
USB234567

Out 1Out 2
Out 2
DAC 1 D0 Input
DAC 1 D1 Input
DAC 1 D2 Input

1.85mm (V) Female
1.85mm (V) Female
1.85mm (V) Female
1.85mm (V) Female
1.85mm (V) Female
1.85mm (V) FemalebcdGNDEthernet
Power Supply

8Clock Input

1.85mm (V) Female

9

DAC 2 D0 Input

1.85mm (V) Female

1011

DAC 2 D1 Input
DAC 2 D2 Input

1.85mm (V) Female
1.85mm (V) Femaledc

all dimensions in mmSHF reserves the right to change specifications and design without notice - SHF 613 A - V004 – October 31, 2019

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