ZLNB2004Q16TC Diodes Zetex, ZLNB2004Q16TC Datasheet

ZLNB2004Q16TC

Manufacturer Part Number

ZLNB2004Q16TC

Description

MUX DUAL DUAL H/V TONE SW 16QSOP

Manufacturer

Diodes Zetex

Datasheet

1.ZLNB2001Q16TC.pdf (12 pages)

Specifications of ZLNB2004Q16TC

Function

Multiplex Controller

Rf Type

LNB, DiSEqC™ , STBs

Secondary Attributes

with Dual Tone and Polarity Switch

Package / Case

16-QSOP

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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DUAL TONE and POLARITY SWITCH LNB

MULTIPLEX CONTROLLER

ISSUE 1- NOVEMBER 1998

DEVICE DESCRIPTION

The ZLNB200X 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 Universal LNBs,

replacing many discrete components to save

both manufacturing cost and PCB size whilst

improving reliability.

The two polarisation control inputs of the

ZLNB200X 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.

Twin Universal LNBs can be called to

operate with one of their controlling

receivers powered down/disconnected, with

attendant cable mismatch problems. To

e ase de sign for this situation, each

polarisation input of the ZLNB200X has a

second threshold set at 9.5V. An input

voltage below this threshold indicates

FEATURES

Dual polarisation switch

Temperature compensated polarisation

switch threshold

Transient resistant inputs

Includes Receiver-Off detector

Dual tone switch

User adjustable filter centre frequency

and bandwidth

User adjustable tone switching delays

(ZLNB2003/4 only)

Tone and pol. outputs TTL, CMOS, Pin

diode and IF amp capable

"receiver not present", switching the

channels Enable pin low. 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 ZLNB200X 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 ZLNB2003/4, 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 for IF-amp supply switching.

The ZLNB200X operates from a single

supply which can be anything from 5-10V. Its

quiescent current is typically only 6mA and

this does not change significantly with load

or logic state. It is available in the space

saving QSOP16 surface mount package.

APPLICATIONS

Receiver-Off detector TTL and CMOS

compatible

Wide supply operating range

Low quiescent current

Few external components

Eliminates many discrete components

Twin Universal LNB

Twin Universal IF switch boxes

LNB switch boxes

ZLNB2001 ZLNB2002

ZLNB2003 ZLNB2004

Related parts for ZLNB2004Q16TC

ZLNB2004Q16TC Summary of contents

Page 1

DUAL TONE and POLARITY SWITCH LNB MULTIPLEX CONTROLLER ISSUE 1- NOVEMBER 1998 DEVICE DESCRIPTION The ZLNB200X dual polarisation and tone switch controller is one of a wide range of satellite receiver LNB support circuits available from Zetex. It features two ...

Page 2

ABSOLUTE MAXIMUM RATINGS Supply Voltage -0.6V to 12V Supply Current 100mA V and V POL1 POL2 Input Voltage 25V Continuous Operating Temperature -40 to 70°C Storage Temperature -40 to 85° ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated): T 25°C,V =5V,I ...

Page 3

ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated): T 25°C,V =5V,I =10mA (R amb CC D SYMBOL PARAMETER Comparator (ZLNB2003 and ZLNB2004 ONLY) V Threshold F=0 TH (Note 1) Tout 1/2 V Outputs ITout1,2=-20 A, Test Circuit 1, VHIGH Voltage High ...

Page 4

TEST CIRCUIT 1 C4 68pF R4 150k C3 470pF R3 10k TEST CIRCUIT 2 ZLNB2003 ZLNB2004 C4 68pF 150k 470pF 100nF R3 10k ZLNB2001 ZLNB2002 ...

Page 5

TYPICAL CHARACTERISTICS 70 Vcc = 100 1k 10k 100k 1M Frequency (Hz) Open Loop Gain v Frequency Vcc = 5V 180 150 120 100 1k 10k 100k 1M ...

Page 6

ZLNB2001 ZLNB2002 ZLNB2003 ZLNB2004 The following block diagram shows a typical block diagram twin universal LNB design. The ZLNB200X devices provides the two polarity and two tone switches required to decode the two independent receiver feeds. The devices are also ...

Page 7

ZLNB2001 ZLNB2002 ZLNB2003 ZLNB2004 APPLICATION CIRCUIT EXAMPLES The following circuit shows the additional components that will be used for polarisation mode and 22kHz tone detection in a typical ZLNB2001/2 application. C4 68pF R4 150k C3 470pF R3 10k LNB Downfeed ...

Page 8

FURTHER INFORMATION 1) Inputs V and V are designed to be POL1 POL2 wired to the power inputs of an LNB via high value (10k) resistors. Input V controls outputs HVout1 and Enable1. Input V controls outputs HVout2 and POL2 ...

Page 9

TONE DETECTION FUNCTION Fin1 ZLNB2001/3 22kHz - ZLNB2002/4 22kHz - V POL1 ZLNB2001/3 <=14V >=15.5V ZLNB2002/4 <=14V >=15.5V ZLNB2001,2,3,4 <=8V Fin2 Tout 1 Tout 2 22kHz High High - Low Low 22kHz High High - Low Low ...

Page 10

ZLNB2001 ZLNB2002 ZLNB2003 ZLNB2004 CONNECTION DIAGRAMS QSOP16 Package Suffix - Q16 Top View Applies to ZLNB2001 QSOP16 Package Suffix - Q16 Top View Applies to ZLNB2004 ORDERING INFORMATION Part Number Package ZLNB2001Q16 QSOP16 ZLNB2002Q16 QSOP16 ZLNB2003Q16 QSOP16 ZLNB2004Q16 QSOP16 QSOP16 ...

Page 11

PACKAGE DIMENSIONS IDENTIFICATION RECESS FOR PIN 1 PIN No.1 QSOP16 DIM Millimetres MIN MAX A 4.80 4.98 B 0.635 C 0.177 0.267 D 0.20 0.30 E 3.81 3.99 F 1.35 1.75 G 0.10 0.25 J 5.79 6.20 K 0° 8° ...

Page 12

MSOP8 DIM Millimetres Inches MIN MAX MIN A 0.91 1.11 0.036 A1 0.10 0.20 0.004 B 0.25 0.36 0.010 C 0.13 0.18 0.005 D 2.95 3.05 0.116 e 0.65 NOM 0.0256 e1 0.33 NOM 0.0128 E 2.95 3.05 0.116 H ...

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