ZLNB2015 Datasheet, PDF (1/7 Pages) Diodes Incorporated – ADVANCED DBS DUAL CHANNEL VOLTAGE AND TONE DETECTOR

A Product Line of
Diodes Incorporated
ZLNB2015
ADVANCED DBS DUAL CHANNEL VOLTAGE AND TONE DETECTOR
Summary
The ZLNB2015 is a dual channel polarisation (voltage) and band select (tone) detector IC, primarily for satellite applications such
as Low Noise Blocks (LNBs) and satellite distribution systems. An optimised design provides a low supply current and a wide
operating voltage whilst increasing performance and reliability. The ZLNB2015 offers excellent interference rejection with
minimal application cost and packaged in the 3x3mm QFN it provides a very small solution.
Features
• Two high accuracy polarisation voltage detection meeting
the most stringent market needs
• Two robust, interference tolerant 22kHz tone detection
(without external signal filtering)
• “No Receiver” detect function for power saving and
isolation control
• Low quiescent supply current, 2mA typical
• Wide operating supply voltage 3V to 8V
• Low external component count minimises application
cost
• True and inverted outputs to support popular multiplexer
ICs
Pin Assignments
TD1
BTD1
BTD2
TD2
Top View
FIN1
VPOL1
VPOL2
FIN2
Application
• Twin Universal LNBs
• Quad Universal LNBs
• Multi Output LNBs
• Satellite Multi-Switches
GND
Bottom View
Twin Universal LNB System Diagram
RF Gain Stages
GaAs FET’s
Down
IF Gain
Conversion
IF Switching IF Gain,
LNB Control &
Power Mgt.
ZABG
Series
4x2
MUX
ZLNB
2015
Vout
ZLPM
Series
Set-top box
Receiver 1
Set-top box
Receiver 2
ZLNB2015
Document number: DS32061 Rev. 1 - 2
1 of 7
www.diodes.com
January 2010
© Diodes Incorporated