Description

The ZLNB2012 dual polarisation and tone switch controller is an electronic component in the category of RF Misc ICs and Modules, which offers a wide range of satellite receiver LNB support circuits available from Zetex. Each of its dual-channel provides logic outputs to control LNB polarisation selection, local oscillator selection, and downfeed disable. The device is designed to replace several discrete components resulting in reduced manufacturing cost, improved reliability, and a smaller PCB. Its two highly accurate polarisation control inputs have a nominal threshold of 14.25V and a switching range of 14.0V to 14.5V. The threshold is temperature compensated to minimise drift.

Specifications and features

• Dual polarisation and tone switch
• Reduced Cost Solution, only 2 external components per channel
• Close tolerance (14-14.5V) and temperature-compensated polarisation switch
• Multiplexer IC direct drive
• Tone and pol. Outputs are TTL, CMOS, Pin diode and IF amp capable
• Transient resistant inputs
• Includes Receiver-Off detector
• User-adjustable filter center frequency and bandwidth
• Low frequency and DiSEqC control signals rejection
• Eliminates many close tolerance discrete components
• Wide supply operating range
• Low quiescent current

Application Scenarios

• Twin Universal LNB’s
• Quad Universal LNB’s
• Multi Feed Universal LNB’s
• LNB switch boxes

Comparison

• The device offers a wide range of satellite receiver LNB support circuits
• Each of its dual-channel provides logic outputs to control LNB polarisation selection, local oscillator selection, and downfeed disable
• The device is designed to replace several discrete components resulting in reduced manufacturing cost, improved reliability, and a smaller PCB
• Its two highly accurate polarisation control inputs have a nominal threshold of 14.25V and a switching range of 14.0V to 14.5V
• The threshold is temperature compensated to minimise drift
• The device includes Receiver-Off detector
• The device eliminates many close tolerance discrete components
• The device has a wide supply operating range and low quiescent current

None observed.