Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
www.adsantec.com

ASNT_PRBS43A
48Gbps PRBS7/PRBS15 Generator with USB Control Interface




11ps Rise, 16ps Fall time for muxed PRBS data output
17ps Rise/Fall time for sync output
19ps Rise/Fall time for half-rate data outputs
VCO frequencies from 7.4GHz to 32.1GHz
User selectable clock divide by 2 to 512 sync output forscope triggering
GUI software interface with onboard USB
Selectable PRBS7 or PRBS15 through USBFigure 1. Block Diagram

DESCRIPTION
The ASNT_PRBS43A can be used for test applications, design verification, and R&D
environments. The 2^7-1 or 2^15-1 pseudo random bit sequence (PRBS) generator operates from10kbps to 48Gbps. Either an external half-rate clock or a reference clock to the onboard PLL isneeded to generate the data outputs. Some output clock and data channels have adjustable phase andRev. 1.2.2

1July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402www.adsantec.com

amplitude. The Sync output provides an oscilloscope triggering signal to view the data pattern for
PRBS7 or eye diagram of PRBS7/PRBS15. A Windows GUI (compatible with Windows XP, 7, 8)
is used to control the amplitude, phase, PRBS reset, divide ratio for sync and clock input control
through a USB-B connector on the ASNT_PRBS43A. Power is supplied with an included AC-DC
power supply. All data and clock connections shown in Figure 1 and Figure 2 are SMA femaleconnectors.
The front panel of the instrument is shown in Figure 2. It contains 3 differential data outputs, 1
differential clock output, and a single-ended Sync output.

Figure 2. Front Panel

The back panel of the instrument is shown in Figure 3. It contains 1 external single-ended clockinput, 1 single-ended clock output, and a single-ended reference clock input. It also includes apower ON/OFF switch, and a +5V DC power supply (included) which connects to a male barrel
jack shown in Figure 3. The USB-B connector allows connection to a computer for controlling theinstrument through a windows GUI.

Figure 3. Back Panel

Rev. 1.2.2

2July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
www.adsantec.com

Figure 4. Data Output Ch2 – 32Gbps PRBS7

Figure 5. Data Output Ch2 – 40Gbps PRBS7

Rev. 1.2.2

3July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
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Figure 6. Data Output Ch2 – 4Gbps PRBS7

Figure 7. Clock Output 2 – 32GHz
277fs random jitter

Rev. 1.2.2

4July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
www.adsantec.com

Figure 8. Data Output Ch1 – 20Gbps PRBS7

Figure 9. Data Output Ch3 – 16Gbps PRBS7

Rev. 1.2.25July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
www.adsantec.com

Data Outputs
There are 3 differential AC coupled data outputs:
Data Output Ch1 has PRBS7/PRBS15 up to 24Gbps with a controllable 155ps of delay,
amplitude control from 0V to 1.7V differentially and output duty cycle control from 40% to60%.
Data Output Ch2 has PRBS7/PRBS15 up to 48Gbps with amplitude control from 0V to1.7V differentially.
Data Output Ch3 has PRBS7/PRBS15 up to 24Gbps with output amplitude of 1.3V
differentially.

Clock I/O’s
There are 2 single-ended AC coupled clock inputs:
Clock Input 1 (Ref Clk In) is a reference clock input that needs at least 100mV of input
amplitude to drive the onboard PLL’s. The reference frequency range can be found in Table
1.
Clock Input 2 (Ext Clk In) is a half-rate clock input that may alternatively be used insteadof Clock Input 1 to provide any data rate from 1Mbps to 48Gbps by providing at least
100mV of input amplitude from 1MHz to 24GHz.
There are 2 AC coupled clock outputs:
Clock Output 1 (front panel) is a differential output ranging from 1MHz to 24GHz with an
adjustable delay up to 105ps, and amplitude of 0.8V peak to peak differentially.
Clock Output 2 (back panel) is a single-ended output ranging from 24.2GHz to 32.1GHzwith output amplitude of ~0.35V peak to peak.

Sync Output
Sync Output provides a selectable clock divided by 2*n with n integer values from 1 to 256
and an AC coupled single-ended output amplitude of 600mV. Sync Output can be connected
to an oscilloscope’s trigger to allow display of a PRBS7 pattern or eye diagram for
PRBS7/PRBS15.

Note: All I/O’s are AC coupled.

Rev. 1.2.2

6July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
www.adsantec.com

Table 1. Clock/Data Table
INPUT
MODE

Clock
Input 1
(Ref Clk In)

OUTPUT

Clock
Clock Output
Clock
Data Output Data Output Data Output
Input 2
1Output 2
CH1
CH2CH3(Ext Clk In) (front panel) (back panel)

VCO 2

Min
1.51251.5125

VCO 3

0.61875 0.80625

--

9.9

12.9-

-

9.9

12.9

19.8

25.8

VCO 4

0.61875 0.80625
-

0.001

24

4.45
0.001

6.45
24-

-

4.45

6.45

9.90.001

244*

VCO 1Ext ClockMax
2.00625
2.00625

Min Max Min
12.16.05MaxMin

Max Min

Max MinMax

MinUnitMax

16.05 24.2 32.1 12.1 16.05 24.2 32.1 12.1 16.05 GHz/ Gbps
8.025 24.2 32.1 6.05 8.025 12.1 16.05 6.05 8.025 GHz/ Gbps
9.9

12.9

GHz/ Gbps

12.9

4.45

6.45

480.001

24GHz/ Gbps
GHz/ Gbps

Note: 4* - Clock Input must be minimum of 2 GHz

ELECTRICAL CHARACTERISTICSPARAMETER

MIN

TYP

MAX

UNIT

COMMENTS

Clock Input 1 (Ref Clk In)
Single-ended Swing

100Frequency

0.618

300

1000

mVPP

2.00625 GHz

Clock Input 2 (Ext Clk In)
Single-ended Swing

100600mVPPFrequency

0.001

24GHz

See Table 1.

Clock Output 1 (front panel)
Differential Swing

800

Frequency
0.001
Rise/Fall times
13
Duty Cycle
45
Delay Adjustment range

50105

mVPP
201555GHz
ps%
ps

Clock Output 2 (back panel)
300
Single-ended Swing

Rev. 1.2.2

250
150

7

@ 25GHzmVPP@ 27GHz@ 29GHz

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Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
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200
Frequency
Duty Cycle

24.245@ 32GHz32.15550

GHz%

Data Output Ch1Differential Swing

0

Data Rate
0.001
Rise/Fall times
Duty Cycle
45
Delay Adjustment range
Absolute delay Stability-21950165

1700

mVPP

24Gbpsps%ps
ps55
2Adjustable
20% - 80%0-125°C

Data Output Ch2
Differential Swing

01700

mVPP

Adjustable

Data Rate
Rise/Fall times
Duty Cycle

448Gbps
ps%

20% - 80%
Adjustable

11/16
4060

Data Output Ch3
Differential Swing
Data Rate
Rise/Fall times
Duty Cycle

13000.001
45mVPP
24195055Gbps
ps%20% - 80%

Sync Output
Frequency

0.0001

Single-ended Swing
Duty Cycle
Rise/Fall time

12600

47155017GHzmVPP

5319%
ps20%-80%

All I/O's are AC coupledRev. 1.2.28July 2019

Advanced Science And Novel Technology Company, Inc.
2790 Skypark Drive Suite 112, Torrance, CA 90505

Offices: 310-530-9400 / Fax: 310-530-9402
www.adsantec.com

MECHANICAL DIMENSIONSPARAMETER TYP UNIT COMMENTS
Length
164mm
Width

129mm

Height58mm

REVISION HISTORY
Revision Date

1.2.2
1.2.1

07-2019
04-2015

1.1.106-2014

1.0.1
1.0.005-2014
03-2014

Rev. 1.2.2

Changes

Updated Letterhead
Increased maximum data rate
Updated Table 1.
Added PRBS15 capability
Added waveform screenshots; Figure 6-9
Added Figure 4 and 5
Corrected rise/fall times for Ch 1, 2 and 3
Added Figure 2 and 3
Preliminary Release

9July 2019