UNISONIC TECHNOLOGIES CO., LTD

L2572

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2007 Unisonic Technologies Co., Ltd

QW-R102-032.A

WIDEBAND PLL FM

DEMODULATOR

DESCRIPTION

As a wideband PLL FM demodulator, the UTC L2572 is

intended for application in satellite tuners primarily.

The device includes all the necessary elements, with

external oscillator sustaining network and the exception of

loop feedback components, to form a PLL system operating

at frequencies up to 800MHz completely.

An AFC with window adjust (whose output signal can be

used to correct for any frequency drift at the head end local

oscillator) is provided.

FEATURES

* Constant voltage and constant current control

* Single chip PLL system for wideband FM demodulation

* Simple low component count application

* Allows for application of threshold extension

* Fully balanced low radiation design

* High operating input sensivity

* Improved VCO stability with variations in supply or

temperature

* AGC detect and bias adjust

* 75Ω video output drive with low distortion levels

* Dynamic self biasing analog AFC

* Full ESD Protection

SOP-16

*Pb-free plating product number: L2572L

ORDERING INFORMATION

Ordering Number

Normal

Lead Free Plating

Package

Packing

L2572-S16-R

L2572L-S16-R

SOP-16

Tape Reel

L2572-S16-T

L2572L-S16-T

SOP-16

Tube