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ZLNB2010, ZLNB2010Q16TC, ZLNB2012

Table of contents:
Info of ZLNB2010
Info of ZLNB2010Q16TC
Info of ZLNB2012

ZLNB2010, ZLNB2010Q16TC, ZLNB2012 Selling Leads, Datasheet

MFG:ZETEX Package Cooled:ZETEX D/C:2008+

ZLNB2010, ZLNB2010Q16TC, ZLNB2012 Picture

ZLNB2010, ZLNB2010Q16TC, ZLNB2012 Datasheet download

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Part Number: ZLNB2010

MFG: ZETEX

Package Cooled: ZETEX

D/C: 2008+

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ZLNB2010 General 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.

The two polarisation control inputs of the ZLNB2006/09/10 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 ZLNB2009/10 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 ZLNB2006/09/10 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 them suitable to drive TTL and CMOS logic, pin diodes and IF-amp supply switching.

The ZLNB2006/09/10 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.

ZLNB2010 Maximum Ratings

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

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 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

ZLNB2010 Typical Application

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

ZLNB2012 General Description

The ZLNB2012 dual polarisation and tone switch controller is one of a wide range of satellite receiver LNB support circuits available from Zetex. It features two completely independent channels, each providing logic outputs to control LNB polarisation selection, local oscillator selection and downfeed disable. It is intended for use in Twin, Quad and multiple feed Universal LNBs, replacing many discrete components to save both manufacturing cost and PCB size whilst improving reliability.

The two highly accurate polarisation control inputs of the ZLNB2012 have a nominal threshold of 14.25V and to meet the required demanding needs from some broadcasters they have a switching range of 14.0V to 14.5V. 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 ZLNB2012 has a second threshold set at 9V. An input voltage below this threshold indicates" receiver not present", and switches 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 ZLNB2012 includes a separate tone detector for each channel. Control of detector bandwidth and sensitivity is provided using an external resistor and capacitor for each channel. The tone detector has been designed give excellent rejection of low frequency control signals and DiSEqC™ tone bursts.

The ZLNB2012 has been specifically designed to minimise the solution cost whilst being flexible. The ZLNB2012 only requires two external components per channel to give full user control and functionality. The ZLNB2012 also includes complimentary outputs so that it can directly drive many multiplexer IC's without the need of an inverter. Any unused outputs can be left open circuit without any effect to the remaining circuits operation Polarisation switch and tone detector outputs can directly drive TTL and CMOS logic, pin diodes, IF-amp supply switching and multiplexer IC's.

The ZLNB2012 operates from a single supply which can be anything from 5-8V. Its quiescent current is typically only 9mA and this does not change significantly with load or logic state. It is available in the space saving QSOP16 surface mount package.

ZLNB2012 Maximum Ratings

Part Number	ZLNB2012
No. of Control Ports	2
Controller Type	IC MUX
Ftone (kHz)	22
Vpol (V)	14 to 14.5
Output Ports Type	Std & Inv
No Rec Detect	Yes
Vcc (V)	39578

ZLNB2012 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 centre frequency and bandwidth
· Low frequency and DiSEqC control signals rejection
· Eliminates many close tolerance discrete components
· Wide supply operating range
· Low quiescent current

ZLNB2012 Typical Application

`Twin Universal LNB's
`Quad Universal LNB's
`Multi Feed Universal LNB's
` LNB switch boxes

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