TDA2541 datasheet(1/7 Pages) STMICROELECTRONICS

Il numero della parte	TDA2541

Spiegazioni elettronici	IF AMPLIFIER WITH DEMODULATOR AND AFC

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TDA2540

TDA2541

IF AMPLIFIER WITH DEMODULATOR AND AFC

August 1992

.

SUPPLY VOLTAGE : 12V TYP

.

SUPPLY CURRENT : 50mA TYP

.

I.F.

INPUT

VOLTAGE

SENSITIVITY

AT

F = 38.9MHz : 85

µVRMS TYP

.

VIDEO OUTPUT VOLTAGE (white at 10% of

top synchro) : 2.7VPP TYP

.

I.F. VOLTAGE GAIN CONTROL RANGE :

64dB TYP

.

SIGNAL TO NOISE RATIO AT VI = 10mV :

58dB TYP

.

A.F.C. OUTPUT VOLTAGE SWING FOR

∆f = 100kHz : 10V TYP

DESCRIPTION

The TDA2540 and 2541 are IF amplifier and A.M.

demodulator circuits for colour and black and white

television receivers using PNP or NPN tuners. They

are intended for reception of negative or positive

modulation CCIR standard.

They incorporate the following functions :

.

Gain controlled amplifier

.

Synchronous demodulator

.

White spot inverter

.

Video preamplifier with noise protection

.

Switchable AFC

.

AGC with noise gating

.

Tuner AGC output (NPN tuner for 2540)-(PNP

tuner for 2541)

.

VCR switch for video output inhibition (VCR

play back)

DIP16

(Plastic Package)

ORDER CODE : TDA2540-TDA2541

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IF INPUT

DECOUPLING CAPACITOR

TUNER AGC TAKE-OVER ADJUST

TUNER AGC OUTPUT

AFC OUTPUT

AFC SWITCH

AFC DEMODULATOR L.C. NETWORK

REFERENCE L.C. NETWORK

IF INPUT

DECOUPLING CAPACITOR

AGC CAPACITOR

GROUND

VIDEO OUTPUT

VCC

AFC DEMODULATOR L.C. NETWORK

REFERENCE L.C. NETWORK

PIN CONNECTIONS

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