TDA8192

MULTISTANDARD AM AND FM SOUND IF CIRCUIT FOR TV

October 1993

.

A 2-STAGE GAIN CONTROLLED AMPLIFIER,

PROVIDING COMPLETE IF GAIN ;

(AM SECTION)

.

A PEAK DETECTOR AND INTEGRATION

WHICH PROVIDES AGC-VOLTAGE ;

(AM SECTION)

.

A

6-STAGE

LIMITING

AMPLIFIER

FOL-

LOWED BY A SYNCHRONOUS DEMODULA-

TOR AND DEEMPHASIS NETWORK ;

(FM SECTION)

.

AN AUDIO PREAMPLIFIER

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A CIRCUIT PROVIDING AM/FM SWITCHING

AND MUTE FACILITIES

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AN EXTERNAL AUDIO INPUT CIRCUIT WITH

SWITCHING

FACILITIES

TO

DELIVER

EITHER THE DEMODULATED IF, OR THE

EXTERNAL AUDIO SIGNAL AT THE OUTPUT

FULLY COMPATIBLE WITH THE SCART

EUROPEAN NORM EN50 049

.

A DC CONTROLLED VOLUME CIRCUIT

DESCRIPTION

The demodulated IF signal is always available at a

low impedance output.

DIP20

(Plastic Package)

ORDER CODE : TDA8192

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IF/AM INPUT

AMPLIFIED AGC (BYPASS)

1st STAGE OUTPUT

AM/FM SWITCH

2nd STAGE INPUT

2nd STAGE OUTPUT

REFERENCE VOLTAGE (+6V)

VOLUME CONTROL INPUT

AGC BYPASS

GND

FM INPUT

FM INPUT (BYPASS)

5.5MHz TUNED CIRCUIT

DEEMPHASIS CAPACITOR

MUTE SWITCH

SCART AUDIO OUTPUT

SCART SWITCH

SCART AUDIO INPUT

POWER SUPPLY (+12V)

RMS

AUDIO OUTPUT (0 to 1 V

)

PIN CONNECTIONS

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