Philips TDA3843 Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA3843

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

Product specification
File under Integrated Circuits, IC02

March 1991

Philips Semiconductors Product specification

Sound-IF circuit for TV AM-sound

TDA3843

standard L and L’

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 SYMBOL MIN. TYP. MAX. UNIT

Supply voltage (pin 14) V
Supply voltage (pin 11) V
Supply current I
Minimum IF input (RMS value) V
IF control range ∆G
AF output signal (RMS value) V
Signal plus weighted-noise to

weighted-noise ratio
(CCIR 468-3) S + W/W 50 56 − dB

P1
P2

11, 14-13

1-16

V

6-13

4.5 5 8.8 V

10.8 12 13.2 V

− 40 48 mA

− 70 100 µV
60 63 − dB

− 550 − mV

PACKAGE OUTLINE

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

March 1991 2

Philips Semiconductors Product specification

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

TDA3843

Fig.1 Block diagram.

March 1991 3