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
ASNT2123-KMM
DC-64Gbps Broadband Digital DDR 1:4 Demultiplexer
Single +3.3V or -3.3V power supply
Power consumption: 1.16W
Fabricated in SiGe for high performance, yield, and reliability
Custom CQFP 44-pin package
vee
vcc
Quarter-rate clock output
vcc
c4op
Half-rate clock input (DDR mode)
vcc
c4on
Differential CML I/O data and clock buffers
vcc
q0p
Exhibits low jitter and limited temperature variation over industrial temperature range
vcc
q0n
High speed broadband 1:4 Demultiplexer (DMUX)
vcc
vcc
vee
vcc
q1p
vcc
n/c
vcc
vcc
q1n
dp
ASNT2123-KMM
ASNT2123
vcc
vcc
q2p
dn
vcc
vcc
q2n
n/c
vcc
vcc
vee
Rev. 1.6.2
1
vcc
cen
vcc
cep
vcc
q3n
vcc
q3p
vcc
vee
vcc
vcc
May 2020
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
DESCRIPTION
vcc
q0p
q0n
q1p
q1n
vcc
dp
dn
q2p
q2n
q3p
q3n
vcc
cep
cen
DIV
c4op
c4on
Fig. 1. Functional Block Diagram
ASNT2123-KMM is a low power and high-speed digital 1-to-4 deserializer-demultiplexer (DMUX) that
functions seamlessly over data rates (fbit) ranging from DC to its maximum speed.
The main function of the part shown in Fig. 1 is to demultiplex an incoming high speed serial differential
CML data bit stream dp/dn running at a bit rate of fbit into 4 parallel data channels q0p/q0n, q1p/q1n,
q2p/q2n, q3p/q3n running at a bit rate of fbit/4. Differential or single-ended half-rate clock cep/cen must
be provided by an external source for the part to function properly.
The parallel words and clock divided-by-4 c4op/c4on are transmitted through CML output interfaces.
The clock and data outputs are phase-matched to each other resulting in a very little relative skew over the
operating temperature range of the device.
The part’s I/O’s support the CML logic interface with on chip 50Ohm termination to vcc and may be used
differentially, AC/DC coupled, single-ended, or in any combination (see also POWER SUPPLY
CONFIGURATION). In the DC-coupling mode, the input signal’s common mode voltage should comply
with the specifications shown in ELECTRICAL CHARACTERISTICS. In the AC-coupling mode, the
input termination provides the required common mode voltage automatically. The differential DC
signaling mode is recommended for optimal performance.
POWER SUPPLY CONFIGURATION
The part can operate with either negative supply (vcc = 0.0V = ground and vee = −3.3V), or positive
supply (vcc = +3.3V and vee = 0.0V = ground). In case of the positive supply, all I/Os need AC
termination when connected to any devices with 50Ohm termination to ground. Different PCB layouts
will be needed for each different power supply combination.
Rev. 1.6.2
2
May 2020
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
All the characteristics detailed below assume vcc = 0.0V and vee = -3.3V.
ABSOLUTE MAXIMUM RATINGS
Caution: Exceeding the absolute maximum ratings shown in Table 1 may cause damage to this product
and/or lead to reduced reliability. Functional performance is specified over the recommended 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 min and max voltage limits are referenced to
ground.
Table 1. Absolute Maximum Ratings
Parameter
Supply Voltage (vee)
Power Consumption
RF Input Voltage Swing (SE)
Case Temperature
Storage Temperature
Operational Humidity
Storage Humidity
Rev. 1.6.2
Min
-40
10
10
3
Max
-3.6
1.3
1.0
+100
+100
98
98
Units
V
W
V
ºC
ºC
%
%
May 2020
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
TERMINAL FUNCTIONS
TERMINAL
Name
No.
Type
q0p
q0n
q1p
q1n
q2p
q2n
q3p
q3n
c4op
c4on
cep
cen
dp
dn
Name
vcc
vee
n/c
Rev. 1.6.2
30
32
37
39
41
43
4
6
26
28
CML
output
CML
output
CML
output
CML
output
CML
output
DESCRIPTION
Low-Speed I/Os
Differential quarter-rate data outputs. Require external SE
50Ohm termination to vcc
Differential quarter-rate clock outputs. Require external SE
50Ohm termination to vcc
High-Speed I/Os
8
CML Differential half-rate clock input signals with internal 50Ohm
input termination to vcc
10
19
CML Differential full-rate data input signals with internal 50Ohm
input termination to vcc
17
Supply and Termination Voltages
Description
Pin Number
Positive power supply
1, 3, 5, 7, 9, 11, 12, 14, 16, 18, 20, 22, 23, 25, 27,
(+3.3V or 0)
29, 31, 33, 34, 36, 38, 40, 42, 44
Negative power supply
2, 13, 24, 35
(0V or -3.3V)
Not connected pins
15, 21
4
May 2020
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
ELECTRICAL CHARACTERISTICS
PARAMETER
TYP MAX UNIT
COMMENTS
General Parameters
-3.1
-3.3
-3.5
V
±6%
vee
0.0
V
External ground
vcc
Ivee
350
mA
Power consumption
1160
mW
Junction temperature -40
25
125
°C
HS Input Data (dp/dn)
Data Rate
DC
40
64
Gb/s
Swing
0.2
0.8
V
Differential or SE, p-p
CM Voltage Level
vcc-0.8
vcc
V
Must match for both inputs
Half-Rate Input Clock (cep/cen)
Frequency
DC
20
32
GHz
Differential swing
0.2
0.8
V
Differential or SE, p-p
CM Voltage Level
vcc-0.8
vcc
V
Must match for both inputs
Duty Cycle
40
50
60
%
LS Output Data (q0p/q0n, q1p/q1n, q2p/q2n, q3p/q3n)
Data Rate
DC
10
16
Gb/s
Logic “1” level
V
vcc
Logic “0” level
vcc-0.44
V
With external 50Ohm DC termination
Output Jitter
2
ps
Peak-to-peak at 10Gb/s
LS Output Clock (c4op/c4on)
Frequency
DC
10
16
GHz
Logic “1” level
V
vcc
Logic “0” level
vcc-0.4
V
With external 50Ohm DC termination
Duty Cycle
50
%
Output Jitter
1
ps
Peak-to-peak at 10GHz
Rev. 1.6.2
MIN
5
May 2020
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
PACKAGE INFORMATION
The chip die is housed in a custom, 44-pin CQFP package shown in Fig. 2. The package provides a
center heat slug located on its back side to be used for heat dissipation. ADSANTEC recommends for
this section to be soldered to the vcc plain, which is ground for a negative supply, or power for a positive
supply.
The part’s identification label is ASNT2123-KMM. The first 8 characters of the name before the dash
identify the bare die including general circuit family, fabrication technology, specific circuit type, and part
version while the 3 characters after the dash represent the package’s manufacturer, type, and pin out
count.
This device complies with the Restriction of Hazardous Substances (RoHS) per 2011/65/EU for all ten
substances.
Rev. 1.6.2
6
May 2020
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
Fig. 2. CQFP 44-Pin Package Drawing (All Dimensions in mm)
Rev. 1.6.2
7
May 2020
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
REVISION HISTORY
Revision
1.6.2
1.5.2
1.5.1
1.4.1
Date
05-2020
07-2019
05-2015
01-2014
1.3.1
02-2013
1.2.1
1.1.1
1.0.1
01-2013
01-2013
01-2013
Rev. 1.6.2
Changes
Updated package information
Updated Letterhead
Updated package information
Title correction
Corrected electrical characteristics
Title correction
Corrected description
Corrected electrical characteristics
Updated package information
Updated maximum speed
Updated power and current consumption
First release
8
May 2020