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TDA3843

Sound-IF circuit for TV AM-sound standard L and L’

Philips Electronics 

Philips Semiconductors

Sound-IF circuit for TV AM-sound

standard L and L’

Product specification

TDA3843

GENERAL DESCRIPTION

The TDA3843 performs the AM-sound demodulation for the L- and L’-standard.

Features

• 5 to 8 V power supply and an alternative 12 V power supply

• Low power consumption (200 mW) at 5 V supply voltage

• New AC-coupled wideband IF-amplifier (high dynamic ranges, less intermodulation)

• In-phase wideband AM demodulator without external reference circuit

• Reduced THD figures even for low AF frequencies (typical 1%)

• Stabilizer circuit for ripple rejection and constant output signals

• All pins are ESD protected

QUICK REFERENCE DATA

PARAMETER

Supply voltage (pin 14)

Supply voltage (pin 11)

Supply current

Minimum IF input (RMS value)

IF control range

AF output signal (RMS value)

Signal plus weighted-noise to

weighted-noise ratio

(CCIR 468-3)

SYMBOL

VP1

VP2

I11, 14-13

V1-16

∆GV

V6-13

MIN.

4.5

10.8

−

−

60

−

TYP.

5

12

40

70

63

550

MAX.

8.8

13.2

48

100

−

−

UNIT

V

V

mA

µV

dB

mV

S + W/W

50

56

−

dB

PACKAGE OUTLINE

16-lead DIL; plastic (opposite bent leads) (SOT38WBE); SOT38-1; 1996 December 4.

March 1991

2

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