DEVICE DESCRIPTION
The ZLNB2006/09/10 group of dual polarisation and tone switch controller are part of a wide range of satellite receiver LNB support circuits available from Zetex. Each part features two completely independent channels, each providing logic outputs to control LNB polarisation selection, local oscillator selection and the ZLNB2009/10 also provides downfeed disable. They are intended for use in Twin Universal and Quad LNBs, replacing many discrete components to save both manufacturing cost and PCB size whilst improving reliability.

FEATURES
• Dual polarisation switch
• Temperature compensated polarisation switch
   threshold
• Transient resistant inputs
• Includes Receiver-Off detector (ZLNB2009/10)
• Dual tone switch
• User adjustable filter centre frequency and
   bandwidth
• User adjustable tone switching delays
• Tone and Pol outputs are TTL, CMOS, Pin diode
   and IF amp capable
• Wide supply operating range
• Low quiescent current
• Few external components
• Eliminates many discrete components

APPLICATIONS
• Twin Universal LNB
• Multi Feed Universal Lnb’s
• Twin Universal IF switch boxes
• LNB switch boxes