Advanced Science And Novel Technology Company, Inc.
27 Via Porto Grande, Rancho Palos Verdes, CA 90275
Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940
www.adsantec.com

ASNT6114-KMC

25GHz 1-to-2 Analog Signal SplitterDC to 25GHz broadband linear signal splitter.



One differential CML-type input port and two phase-matched differential CML-type output ports.



Differential input linearity range up to 1000mV p-p.

Differential gain of approximately 0dB.

Low jitter and limited temperature variation over industrial temperature range.

Single +3.3V or -3.3V power supply.

Power consumption: 660mW.

Fabricated in SiGe for high performance, yield, and reliability.

Custom CQFP 24-pin package.

Rev. 1.01March 2012

Advanced Science And Novel Technology Company, Inc.
27 Via Porto Grande, Rancho Palos Verdes, CA 90275
Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940
www.adsantec.com

q1nq1pDESCRIPTION

5050505050dp
dnq2p

q2n50

Fig. 1. Functional Block Diagram

ASNT6114-KMC is a temperature stable active analog signal splitter 1-to-2 and is intended for use in highspeed interleaved ADC or similar systems. The IC shown in Fig. 1 can receive a broad-band analog signal at its
differential input “dp/dn” and effectively distribute it to two separate phase matched differential
outputs“q1p/q1n”, “q2p/q2n” with a nominal gain of 0dB.
The part’s output buffers support the CML-type interface with on chip 50Ohm termination to “vcc” and may be
used in either DC or AC coupling modes (see also POWER SUPPLY CONFIGURATION). The differential DCsignaling is recommended for the optimal performance. In particular, the output common-mode voltage level of“vcc”-0.55V is guaranteed only in case of external single-ended 50Ohm DC termination to “vcc”.
The part’s input buffer supports the CML-type interface with equivalent on-chip 50Ohm termination and can beused in either DC or AC coupling modes. In the first mode, the input signal’s common mode voltage should
comply with the specifications shown in ELECTRICAL CHARACTERISTICS. In the second mode, the input
termination provides the required common mode voltage automatically. The differential signaling isrecommended for the optimal performance.

POWER SUPPLY CONFIGURATIONThe ASNT6114-KMC 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 beneeded for each different power supply combination.

All the characteristics detailed below assume “vcc” = 0.0V and “vee” = -3.3V.
Rev. 1.02March 2012

Advanced Science And Novel Technology Company, Inc.
27 Via Porto Grande, Rancho Palos Verdes, CA 90275
Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940
www.adsantec.com

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 forpower supply and temperature only. AC and DC device characteristics at or beyond the absolute maximumratings are not assumed or implied. All min and max voltage limits are referenced to ground (assumed “vcc”).
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-3.8
0.8
1.4+90+10098
98Units
VW
VºC
ºC%%

TERMINAL FUNCTIONTERMINAL
NameNo.
Typedp
21
CML
input
dn23
q1p
17
CML
output
q1n15
q2p5
CML
outputq2n3

DESCRIPTIONDifferential data inputs with internal SE 50Ohm termination to“vcc”.
Differential data outputs. Require external SE 50Ohm
termination to “vcc”.
Differential data outputs. Require external SE 50Ohm
termination to “vcc”.

Supply and Termination Voltages
Namevccveen/cRev. 1.0

Description
Positive power supply.
(+3.3V or 0)
Negative power supply.
(0V or -3.3V)
Not connected pins

Pin Number
2, 4, 6, 8, 12, 14, 16, 18, 20, 22, 24
1, 7, 13, 19
9, 10, 113March 2012

Advanced Science And Novel Technology Company, Inc.
27 Via Porto Grande, Rancho Palos Verdes, CA 90275
Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940
www.adsantec.com

ELECTRICAL CHARACTERISTICSPARAMETER

MIN

TYP

MAXUNITCOMMENTS
General Parametersvee-3.1-3.3-3.5
V
±6%
vcc
0.0
V
External ground
Ivee
200mA
Power consumption
660mW
Junction temperature
050
125°C
HS Input Data (d)Bandwidth25GHz
At -3dB level
Linearity range
1000mV
Differential p-p
CM Voltage Level“vcc”-0.6 “vcc”-0.5 “vcc”+0.4
VInput Noise Density
1.5nV/sqrt(Hz)S11-10dB
DC to 30GHz
HS Output Data (q0, q1)
Small Signal Gain
0dB
Differential, at 10GHz
CM Level“vcc”-0.55
VWith external 50Ohm DC termination
S22-8dB
DC to 30GHz
1dB Compression Point
2.7dBmOutput-referred, SE, at 20GHz
THD
0.2%
At Vout= 400mV p-p, SE

PACKAGE INFORMATIONThe chip die is housed in a custom 24-pin CQFP package. The package’s mechanical information is available
on the company’s website. Even though the package provides a center heat slug located on the back side of thepackage to be used for heat dissipation, ADSANTEC does NOT recommend for this section to be soldered tothe board. If the customer wishes to solder it, it should be connected to “vcc” plain that is ground for thenegative supply or power for the positive supply.
The part’s identification label is ASNT5024-KMC. 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 whilethe 3 digits after the underscore represent the package’s manufacturer, type, and pin out count.
This device complies with the Restriction of Hazardous Substances (RoHS) per EU 2002/95/EC for all six
substances.

Rev. 1.0

4March 2012

Advanced Science And Novel Technology Company, Inc.
27 Via Porto Grande, Rancho Palos Verdes, CA 90275
Offices: 310-377-6029 / 310-803-9284 Fax: 310-377-9940
www.adsantec.com

REVISION HISTORY
Revision
1.0

Rev. 1.0

Date3-2012

Changes
First release

5March 2012