November 1987

2

Philips Semiconductors

Product specification

Television IF amplifier and demodulator

TDA8340

TDA8341

DESCRIPTION

The TDA8340;Q and TDA8341;Q are integrated IF

amplifier and demodulator circuits for colour or black/white

television receivers, the TDA8340;Q is for application with

n-p-n tuners and the TDA8341;Q for p-n-p tuners.

The TDA8340;Q and TDA8341;Q are pin-compatible

successors with improved performance to types

TDA2540/2541;Q and TDA3540/3541;Q.

Features

• Full range gain-controlled wide-band IF amplifier

• Linear synchronous demodulator with excellent

intermodulation performance

• White spot inverter

• Wide-band video amplifier with noise protection

• AFC circuit with AFC on/off switching and

sample-and-hold function

• Low impedance AFC output

• AGC circuit with noise gating

• Tuner AGC output for n-p-n tuners (TDA8340) or p-n-p

tuners (TDA8341)

• External video switch for switching-off the video output

• Reduced sensitivity for high sound carriers

• Integrated filter to limit second harmonic IF signals

• Wide supply voltage range

• Requires few external components

QUICK REFERENCE DATA

PACKAGE OUTLINES

TDA8340; TDA8341:

16-lead DIL; plastic (SOT38); SOT38-1; 1996 november 29.

PARAMETER

CONDITIONS

SYMBOL

MIN.

TYP.

MAX.

UNIT

Supply voltage (pin 11)

9,4

12

13,2

V

Supply current (pin 11)

30

42

55

mA

IF input sensitivity

(r.m.s. value)

20

40

80

µV

IF gain control range

−

67

−

dB

Video output voltage

white signal;

(peak-to-peak value)

10% top sync

2,4

2,7

3,0

V

Signal-to-noise ratio

S/(S

+N)

50

58

−

dB

AFC output voltage swing

(peak-to-peak value)

−

10

−

V