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

ASNT5121-KMC
DC-50Gbps/32GHz Signal Distributor 1-to-3

Matched phase delays for all outputs



Fully differential CML input interfaces

Fully differential CML output interface with 400mV single-ended swingSingle +3.3V or -3.3V power supplyPower consumption: 580mWFabricated in SiGe for high performance, yield, and reliability

Custom CQFP 24-pin packagevee

One input differential signal port and three differential amplified output signal ports

vcc

c0nExhibits low jitter and limited temperature variation over industrial temperature range

vcc



c0p

High-speed broadband Data/Clock Amplifier and Distributor

vcc

vee

vcc

vcc

cp

c1p

ASNT5121

vcc

vcc

cn

c1n

vcc

vcc

Rev. 2.1.21

vcc

c2n

vcc

c2p

vcc

vee

vee

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

DESCRIPTIONc0pc0n50505050cpc1pcnc1n50505050
c2pc2nFig. 1. Functional Block Diagram

The temperature stable ASNT5121-KMC SiGe IC provides active broadband data/clock signal splitting,and is intended for use in high-speed measurement / test equipment. The IC shown in Fig. 1 can process abroadband high-speed data/clock input signal cp/cn and deliver three broadband high-speed data/clockphase matched output signals c0p/c0n, c1p/c1n, c2p/c2n.
The part’s I/O’s support the CML logic interface with on chip 50Ohm termination to vcc and may be useddifferentially, AC/DC coupled, single-ended, or in any combination (see also POWER SUPPLYCONFIGURATION). 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, theinput 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 positivesupply (vcc = +3.3V and vee = 0.0V = ground). In case of the positive supply, all I/Os need ACtermination when connected to any devices with 50Ohm termination to ground. Different PCB layouts
will be needed for each different power supply combination.

All the characteristics detailed below assume vcc = 0.0V and vee = -3.3V.
Rev. 2.1.2

2May 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

ABSOLUTE MAXIMUM RATINGS
Caution: Exceeding the absolute maximum ratings may cause damage to this product and/or lead toreduced 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 absolutemaximum 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

Min-401010Max-3.6
0.64
1.0+90+1009898

Units
VW
VºCºC%%TERMINAL FUNCTIONSTERMINAL
Name
No.
Typecpcn
c0p
c0n
c1p
c1n
c2p
c2n
Name
vcc
vee

Rev. 2.1.2

DESCRIPTION

High-Speed I/Os
Differential high speed data/clock inputs with internal SE 50Ohm
termination to vcc.
Differential high speed data/clock outputs with internal SE 50Ohm
termination to vcc. Require external SE 50Ohm termination to vcc.
Differential high speed data/clock outputs with internal SE 50Ohm
termination to vcc. Require external SE 50Ohm termination to vcc.
Differential high speed data/clock outputs with internal SE 50Ohm
termination to vcc. Require external SE 50Ohm termination to vcc.
Supply and Termination Voltages
Description
Pin Number
Positive power supply. (+3.3V or 0)2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
Negative power supply. (0V or -3.3V)
1, 7, 13, 19
21
23
17
15
11
9
3
5

CML
input
CMLoutput
CMLoutput
CMLoutput

3May 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 CHARACTERISTICSPARAMETER

MIN

TYP

MAX UNITCOMMENTS
General Parameters
-3.1
-3.3
-3.5
V
±6%
vee
0.0
V
External ground
vcc
Ivee
175mA
Power consumption
580mW
Junction temperature -40
25125°C
HS Input Data/Clock (cp/cn)
Data Rate
DC
50GbpsFrequency
DC32
GHz
Swing
0.05
1.0V
Differential or SE, p-p
CM Voltage Level
vcc-0.8
vcc
VMust match for both inputsHS Output Data/Clock (c0p/c0n, c1p/c1n, c2p/c2n)
Data Rate
DC50Gbps
Frequency
DC32GHz
Logic “1” level
Vvcc
Logic “0” levelvcc-0.4
V
With external 50Ohm DC termination
Rise/Fall times
6810
ps20%-80%
Output Jitter1
ps
Peak-to-peakDuty cycle
455055%For clock signal

PACKAGE INFORMATIONThe chip die is housed in a custom 24-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 thissection to be soldered to the vcc plain, which is ground for a negative supply, or power for a positivesupply.
The part’s identification label is ASNT5121-KMC. The first 8 characters of the name before the dashidentify the bare die including general circuit family, fabrication technology, specific circuit type, and partversion 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. 2.1.24May 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 24-Pin Package Drawing (All Dimensions in mm)

Rev. 2.1.2

5May 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
2.1.2
2.0.2
2.0.1

Date
05-2020
07-2019
02-20131.010-2008

Rev. 2.1.2

Changes
Updated Package Information
Updated Letterhead
Added package pin out drawing
Revised functional block diagram
Revised description
Added power supply configuration
Added absolute maximum ratings
Revised terminal functions
Revised electrical characteristics
Added package information and mechanical drawing
Format correction
First release6

May 2020