zlnb100 Zetex Semiconductors plc., zlnb100 Datasheet - Page 3

• Manufacturer Part Number: zlnb100
• Description: Dual Polarisation Switch Twin Lnb Multiplex Controller
• Manufacturer: Zetex Semiconductors plc.

Note:-
1) V
specified above.
2) Inputs V
(10k) resistors. Input V
and Hor2. With either input voltage set at or below 14V, the corresponding Vert pin will be high
and Hor pin low. With either input voltage at or above 15.0V, the corresponding Vert pin will be
low and Hor pin high. Any input or output not required may be left open-circuit.
3) All outputs are designed to be compatible with TTL, CMOS, pin diode and IF Amp loads.
4) Applied via 10k resistors
The following block diagram shows a typical block diagram twin LNB design. The ZLNB100
provides the two polarity switches required to decode the two independent receiver feeds.
Additionally the front end bias requirements of the LNB are provided by the ZNBG4000 or
ZNBG6000 offering a very efficient and cost effective solution.
Horizontal
Antenna
Vertical
Antenna
POL1
and V
Gain Stage
GaAs/HEMTFET
Gain Stage
GaAs/HEMTFET
POL1
Bias Generator
ZNBG40XX
Series
1
2
POL2
and V
switching thresholds apply over the whole operating temperature range
4
POL2
3
POL1
are designed to be wired to the power input of an LNB via high value
controls outputs Vert1 and Hor1. Input V
Mixer
+
Mixer
+
ZLNB100 Series
Dual H/V Switch
Control Input
<=13V-Horizontal
>=14.5V-Vertical
77
Horizontal
Control
Vertical
POL2
PIN
Diode
MUX
ZLNB100
controls outputs Vert2
DC Input
13-25V
IF down feed
950-1750 MHz
- Standard Band
950-2050 MHz
- Enhanced Band
H/V Output 1
H/V Output 2