TDA9821 datasheet(2/16 Pages) PHILIPS

2 / 16 page

1996 Nov 20

Philips Semiconductors

Product speciﬁcation

Dual channel TV FM intercarrier

sound demodulator

TDA9821

FEATURES

• Two alignment-free PLL FM demodulators

• Automatic second sound carrier mute

• Mono and dual channel application

• Low power consumption

• Few external components required.

GENERAL DESCRIPTION

The TDA9821 is a monolithic, integrated, TV FM

intercarrier sound demodulator for all FM standards.

The circuit contains two separate FM demodulators using

Phase Locked Loop (PLL) reference frequency

generation. The circuit requires a minimum number of

external components.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage (pin 14)

4.5

5.0

8.8

supply current (pin 14)

AC peak current (pins 7 and 8)

−−

1.5

Vi(rms)

input signal (RMS value)

−

150

250

µV

Vo(rms)

output signal (pins 7 and 8; RMS value)

∆fi = ±50 kHz

0.4

0.5

0.6

signal plus noise-to-noise ratio

(pins 7 and 8)

in accordance with

“CCIR 468-3”

−

α8/7

crosstalk attenuation

f = 50 to 12500 Hz

−

supply voltage ripple rejection

(pins 7 and 8)

VRR < 200 mV; f = 70 Hz

−

Tamb

operating ambient temperature

−

°C

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA9821

DIP16

plastic dual in-line package; 16 leads (300 mil); long body

SOT38-1

--------------

40 dB

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