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ZLNB2001 Datasheet(PDF) 6 Page - Zetex Semiconductors

Part No. ZLNB2001
Description  DUAL TONE and POLARITY SWITCH LNB MULTIPLEX CONTROLLER
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Maker  ZETEX [Zetex Semiconductors]
Homepage  http://www.diodes.com/
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ZLNB2001 Datasheet(HTML) 6 Page - Zetex Semiconductors

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The following block diagram shows a typical
block diagram twin universal LNB design.
The ZLNB200X devices provides the two
polarity and two tone switches required to
decode the two independent receiver feeds.
The devices are also able detect the absence
of a receiver connected to either port of the
LNB providing an Enable signal allowing the
disabling of the port. This allows the
avoidance of unwanted signal reflections
from an unterminated down feed cable.
Additionally the front end bias requirements
of the LNB are provided by the ZNBG4000 or
ZNBG6000 offering a very efficient and cost
effective solution.
Bias Generator
ZNBG40XX
Series
ZLNB20XX Series
Dual H/V Switch
&
22kHz Switch
Vertical
Antenna
Horizontal
Antenna
Gain Stage
GaAs/HEMTFET
Gain Stage
GaAs/HEMTFET
1
4
2
IF down feed
950-1750 MHz
- Standard Band
950-2050 MHz
- Enhanced Band
H/V Output 2
H/V Output 1
3
Control Input
<=13V-Horizontal
>=14.5V-Vertical
Control
High Band
Horizontal
Low Band
Horizontal
High Band
Vertical
Low Band
Vertical
PIN
Diode
MUX
DC Input
13-25V
ASTRA
10.95 GHz-11.7 GHz
Standard Band
10.7 GHz-11.8 GHz
Enhanced Band
+
+
Mixer
+
+
Mixer
Low Band
Low Band
High Band
High Band
ZLNB2001 ZLNB2002
ZLNB2003 ZLNB2004
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