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TDA9814

Multistandard VIF-PLL with QSS-IF and dual FM-PLL/AM demodulator

Philips Electronics 

Philips Semiconductors

Multistandard VIF-PLL with QSS-IF

and dual FM-PLL/AM demodulator

Product specification

TDA9814T

FEATURES

• 5 V supply voltage

• Gain controlled wide band VIF-amplifier (AC-coupled)

• True synchronous demodulation with active carrier

regeneration (very linear demodulation, good

intermodulation figures, reduced harmonics,

excellent pulse response)

• Robustness for over-modulation better than 105% due

to gated phase detector at L/L accent standard

• VCO frequency switchable between L and L accent

(alignment external) picture carrier frequency

• Separate video amplifier for sound trap buffering with

high video bandwidth

• VIF-AGC detector for gain control, operating as peak

sync detector for B/G and peak white detector for L

(optional external AGC); signal controlled reaction time

for L

• Tuner AGC with adjustable takeover point (TOP)

• AFC detector without extra reference circuit

• AC-coupled limiter amplifier for sound intercarrier signal

• Two alignment-free FM-PLL demodulators with

high linearity

• SIF input for single reference QSS mode (PLL

controlled); SIF AGC detector for gain controlled SIF

amplifier; single reference QSS mixer able to operate in

high performance single reference QSS mode

• AM demodulator without extra reference circuit

• Stabilizer circuit for ripple rejection and to achieve

constant output signals

• ESD protection for all pins.

GENERAL DESCRIPTION

The TDA9814T is an integrated circuit for multistandard

vision IF signal processing and sound AM and dual FM

demodulation, with single reference QSS-IF in TV and

VCR sets.

ORDERING INFORMATION

TYPE NUMBER

TDA9814T

NAME

SO28

PACKAGE

DESCRIPTION

plastic small outline package; 28 leads; body width 7.5 mm

VERSION

SOT136-1

1998 Feb 09

2

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