TDA9817T 查看數據表（PDF） - Philips Electronics

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TDA9817T

Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators

Philips Electronics 

Philips Semiconductors

Single/multistandard VIF/SIF-PLL and

FM-PLL/AM demodulators

Product specification

TDA9817; TDA9818

FEATURES

• 5 V supply voltage

• Applicable for Intermediate Frequencies (IFs) of

38.9, 45.75 and 58.75 MHz

• Gain controlled wide band Video IF (VIF) amplifier

(AC-coupled)

• True synchronous demodulation with active carrier

regeneration (very linear demodulation, good

intermodulation figures, reduced harmonics and

excellent pulse response)

• Robustness for over-modulation better than 105% due

to gated phase detector at L/L accent standard and

PLL-bandwidth control at negative modulated standards

• Voltage Controlled Oscillator (VCO) frequency

switchable between L and L accent (alignment external)

picture carrier frequency

• VIF Automatic Gain Control (AGC) detector for gain

control, operating as peak sync detector for B/G, peak

white detector for L; signal controlled reaction time for L

• Tuner AGC with adjustable TakeOver Point (TOP)

• Automatic Frequency Control (AFC) detector without

extra reference circuit

• AC-coupled limiter amplifier for sound intercarrier signal

• Alignment-free FM Phase-Locked Loop (PLL)

demodulator with high linearity

• Sound IF (SIF) input for single reference Quasi Split

Sound (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 and in intercarrier mode

• AM demodulator without extra reference circuit

• Stabilizer circuit for ripple rejection and to achieve

constant output signals

• ElectroStatic Discharge (ESD) protection for all pins.

GENERAL DESCRIPTION

The TDA9817 is an integrated circuit for single standard

vision IF signal processing and FM demodulation.

The TDA9818 is an integrated circuit for multistandard

vision IF signal processing, sound AM and FM

demodulation.

ORDERING INFORMATION

TYPE NUMBER

TDA9817T

TDA9817TS

TDA9818

TDA9818T

TDA9818TS

NAME

SO24

SSOP24

SDIP24

SO24

SSOP24

PACKAGE

DESCRIPTION

plastic small outline package; 24 leads; body width 7.5 mm

plastic shrink small outline package; 24 leads; body width 5.3 mm

plastic shrink dual in-line package; 24 leads (400 mil)

plastic small outline package; 24 leads; body width 7.5 mm

plastic shrink small outline package; 24 leads; body width 5.3 mm

VERSION

SOT137-1

SOT340-1

SOT234-1

SOT137-1

SOT340-1

2004 Jun 29

2

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