2003 Oct 21 4
Philips Semiconductors Product specification
Car radio integrated signal processor TEF6890H
1.7 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.
2 GENERAL DESCRIPTION
The TEF6890H 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 RDS/RBDS
demodulator function is included. The device operates
with a supply voltage of 8 to 9 V.
3 ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TEF6890H QFP44 plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10 × 10 × 1.75 mm
SOT307-2
