ZLNB2010

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 ...

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ZLNB2010: Features: • Dual polarisation switch• Temperature compensated polarisation switch threshold• Transient resistant inputs• Includes Receiver-Off detector (ZLNB2009/10)• D...

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Part Number:
ZLNB2010
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



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





Application

• Twin Universal LNB
• Multi Feed Universal Lnb's
• Twin Universal IF switch boxes
• LNB switch boxes





Specifications

Supply Voltage............-0.6V to 12V
Supply Current ..............100mA
VPOL1 and VPOL2 Input Voltage.. 25V Continous
Operating Temperature.......-40 to 85°C
Storage Temperature ....... -40 to 125°C


Part Number ZLNB2010
No. of Control Ports 2
Controller Type Diode MUX
Ftone (kHz) 22
Vpol (V) 14 to 15.5
Output Ports Type Std
No Rec Detect Yes
Vcc (V) 39578





Description

The ZLNB2006/09/ZLNB2010 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.

The two polarisation control inputs of the ZLNB2006/09/ZLNB2010 have a nominal threshold of 14.75V. The threshold is temperature compensated to minimise drift. Each features a low and stable input current that enables transient protection to be achieved with the addition of only a single resistor per channel.

Multi Feed LNBs can be called to operate with one or more of their controlling receivers powered down/disconnected, with attendant cable mismatch problems. To ease design for this situation, each polarisation input of the ZLNB2009/ZLNB2010 has a second threshold set at 9.5V. An input voltage below this threshold indicates "receiver not present", switching the relevant control channels high. This logic output can be used to disable the associated downfeed driver, eliminating any problems due to cable mismatch.

Universal LNB local oscillator selection is achieved by detection of a low level AC voltage superimposed on the polarisation control voltage. To facilitate this function, the ZLNB2006/09/ZLNB2010 includes a separate tone detector for each channel. Full control of detector bandwidth and sensitivity is provided using two external resistors and capacitors. In the ZLNB2006/9, additional control of tone switch delays is provided to assist with the rejection of low frequency control signals intended for other systems.

Polarisation switch and tone detector outputs can source and sink 10mA making ZLNB2010 suitable to drive TTL and CMOS logic, pin diodes and IF-amp supply switching.

The ZLNB2006/09/ZLNB2010 operates from a single supply which can be anything from 5-10V. Their quiescent current is typically only 6mA and this does not change significantly with load or logic state. They are available in the space saving QSOP16 or QSOP20 surface mount package.






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