Diodes ZLNB2015 - Manual

ZLNB2015
ZLNB2015
Document number: DS32061 Rev. 1 - 2
1 of 7
www.diodes.com
January 2010
© Diodes Incorporated
NEW PROD
UC
T
A Product Line of
Diodes Incorporated
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
Application
•
Twin Universal LNBs
•
Quad Universal LNBs
•
Multi Output LNBs
• Satellite
Multi-Switches
Twin Universal LNB System Diagram
Top View
Bottom View
BTD1
BTD2
TD2
FIN1 TD1
VC
C
VPOL2
FIN2
VPOL1
EN
A
1
HO
R1
BH
O
R
1
EN
A
2
GN
D
HO
R2
B
H
OR
2
GND
4x2
MUX
ZLPM
Series
Vout
IF Gain IF Switching IF Gain,
LNB Control &
Power Mgt.
Down
Conversion
Set-top box
Receiver 1
Set-top box
Receiver 2
ZABG
Series
ZLNB
2015
RF Gain Stages
GaAs FET’s