TEF6894H datasheet(4/55 Pages) PHILIPS

4 / 55 page

2003 Oct 21

Philips Semiconductors

Product speciﬁcation

Car radio integrated signal processor

TEF6894H

1.6

Tone/volume part

• Input selector for four inputs:

– Two external stereo inputs (CD and TAPE)

– One mono input (PHONE)

– One internal stereo input (AM or FM).

• Integrated tone control and audio filters without external

components

• Volume control from +20 to −79 dB in 1 dB steps;

programmable 20 dB loudness control included

• Programmable loudness control with bass boost or as

bass and treble boost

• Treble control from −14 to +14 dB in 2 dB steps

• Bass control from −14 to +14 dB in 2 dB steps with

selectable characteristics

• Good undistorted performance for any step size,

including mute

• Audio Step Interpolation (ASI) available for the following

audio controls:

– Mute

– Loudness

– Volume/balance

– Bass

– Fader.

• ASI also realizes Alternative Frequency (AF) mute for

inaudible RDS update

• Integrated beep generator

• Navigation (NAV) input

• Output mixer circuit for beep or NAV signal at output

stages.

GENERAL DESCRIPTION

The TEF6894H is a monolithic BiMOS integrated circuit

comprising the stereo decoder function, weak signal

processing and ignition noise blanking facility for AM and

FM combined with input selector and tone/volume control

for AM and FM car radio applications. The device operates

with a supply voltage of 8 to 9 V.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TEF6894H

QFP44

plastic quad ﬂat package; 44 leads (lead length 1.3 mm);

body 10

× 10 × 1.75 mm

SOT307-2

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