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 MUX6464Gbps 2:1 Multiplexer Unit


High speed broadband 2-to-1 Multiplexer (MUX)
Fully differential CML data input and output interfaces
Single-ended CML clock input and output interfaces
NRZ multiplexing and PAM4 generation support
Built-in half-rate input clock phase shift capability
Two single ended quarter-rate CML clock outputs with delay adjustment to support PAM4signal generation (requires two MUX64 units)
Full functional control from an external PC with a special GUI software (installation provided)
USB port for connection to an external PC (PC not provided)
Single 9V power supply from an external AC-DC converter (provided)
Low jitter and limited temperature variation over industrial temperature range

Fig. 1. Front and back views of the unit

Rev. 2.1.2

1

July 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

DESCRIPTIONDATA IN1

HALF RATE CLK IN

USB

Phase Shift
105ps

USBInterface

Fanout Buffer
1:3Divider/2

DATA IN2

Multiplexer

HS DATA OUT

Phase Shift
105ps

QUATER RATE CLK OUT 1

Phase Shift
105ps

QUATER RATE CLK OUT 2Power Conditioning

DC +9VFig. 2. Block diagram

The ASNT_MUX64 can be used for test applications, design verification, and R&D environments
including double frequency rate NRZ data multiplexing and PAM4 generation, which requires two
MUX units. The front panel of the instrument is shown in Fig. 1 (top). It includes connectors as
described in Table 1.
Table 1. Front-panel connectors

Connector
Name

DESCRIPTION
Type

High-Speed I/Os
1.85mm DC-coupled CML differential data output port, requires
female external SE 50Ohm terminations to groundDC-coupled CML differential data input port withinternal SE 50Ohm terminations to ground
2.92mm DC-coupled CML differential data input port withfemale internal SE 50Ohm terminations to groundAC-coupled CML SE clock input port with internal SE
50Ohm terminations to ground
CLOCK ½ OUT Q1
AC-coupled CML SE clock output ports, require externalSMA
SE 50Ohm terminations to ground
CLOCK ½ OUT Q2DATA OUT P
DATA OUT NDATA IN1 P
DATA IN1 N
DATA IN2 P
DATA IN2 N
CLOCK IN P

Rev. 2.1.22July 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

The back panel of the instrument is shown in Fig. 1 (bottom). It contains a power switch (Power), apower supply female connector (+9-12V DC) for connecting a male 2.5x5.5 barrel jack of theexternal AC-DC adapter, and the USB-B connector (USB) for connecting an external PC withinstalled Windows GUI control software.
Two input data signals supplied through the CML differential ports are sampled by an internal clockthat is derived form an input half-rate clock.
The input clock has a controlled phase shift capability that allows for selection of the optimal data
sampling point. The shifted clock is divided by 2, and supplied to two outputs through additional
independent phase shifters. This feature is required for PAM4 signal generation using two MUXunits. More details can be found in the AN_ASNT_MUX64 document.
A Windows GUI (compatible with Windows XP, 7, 8 and 10) is used to control all adjustableparameters of the unit including high speed data output amplitude, clock phase shifts, commonmode voltage levels of the input clock signals, etc.
The unit is powered by a single 9V supply delivered from an external AC-DC adapter connected tothe input socket on the back panel.
An example of the output eye for a 56Gbps PRBS7 signal is shown in Fig. 3.

Fig. 3. Data Output Eye for 56Gbps PRBS7 signal

Rev. 2.1.2

3

July 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

ABSOLUTE MAXIMUM RATINGS
Caution: Exceeding the absolute maximum ratings shown in Table 2 may cause damage to thisproduct and/or lead to reduced reliability. Functional performance is specified over therecommended operating conditions for power supply and temperature only. AC and DC device
characteristics at or beyond the absolute maximum ratings are not assumed or implied. All max
voltage limits are referenced to ground.
Table 2. Absolute Maximum Ratings
Parameter
Min Max Units
612V
Supply Voltage (vee)Power Consumption
8W
RF Input Voltage Swing (SE)
1.0
V
Case Temperature+90ºC
Storage Temperature-40 +100ºC
Operational Humidity
1098%
Storage Humidity
1098%

ELECTRICAL CHARACTERISTICSPARAMETERMIN TYP MAX
HS Input Clock100
8000.001
32
HS Input Data

UNIT

Differential Swing

100

1000mVPP

Frequency

0.001
32
HS Output Clock5000.0005
16
HS Output Data
2000
-0.50.002
647/7
4060Gbps

Single-ended Swing
Frequency

Single-ended Swing
Frequency
Differential SwingCommon Mode Level
Data Rate
Rise/Fall times
Duty Cycle

Rev. 2.1.2

4

COMMENTSmVPP
GHzmVPPGHzmVPP
VGbps
ps%

Differential orSingle-ended

Typical20% - 80%
Adjustable

July 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
Length160mm
Width103mm

Height53mm

REVISION HISTORY
Revision

Date

2.1.2
2.1.1
2.0.1
1.1.1
1.0.1

07-2019
05-2018
01-2018
06-2015
11-2014

Rev. 2.1.2Changes

Updated Letterhead
Updated Fig. 3Completely updated released
Corrected Fig. 1
Initial Release5

July 2019