TEA6880H Up-level Car radio Analog SignalProcessor

1 FEATURES

1.1 General

· I2C-bus compatible

· Digital alignment/adjustment via I2C-bus:

FM noise blanker sensitivity

FM stereo noise canceller

FM High Cut Control (HCC)

FM stereo separation.

· FM audio processing hold for RDS updating; holds the

detectors for the FM weak signal processing in their

present state

· FM bandwidth limiting; limits the bandwidth of the FM

audio signal with external capacitors

· AM stereo input; AM stereo audio can be fed in at the

pins for the de-emphasis capacitors; this will provide

8 dB of gain to the AM audio.

1.2 Stereo decoder and noise blanking

· FM stereo decoder

· Accepts FM multiplex signal and AM audio at input

· Pilot detector and pilot canceller

· De-emphasis selectable between 75 and 50 ms

· AM noise blanker: impulse noise detector and an audio

hold.

1.3 Weak signal processing

· FM weak signal processing: six signal condition

detectors, soft mute, stereo noise canceller (blend), and

High Cut Control (roll-off).

1.4 Audio pre-amplifier

· Source selector for 6 sources: 2 stereo inputs external

(A and B), 1 symmetrical stereo input (C), 1 symmetrical

mono input (D), 1 internal stereo input (AM or FM), and

1 chime/diagnostic mono input

· Volume 1 control from +20 to -56 dB in 1 dB steps;

programmable 20 dB loudness control included

· Volume 2 control from 0 to -56 dB in 1 dB steps, -56,

-58.5, -62, -68 dB and mute

· Programmable loudness control with bass boost as well

as bass and treble boost

· Treble control from -14 to +14 dB in 2 dB steps

· Bass control from -18 to +18 dB in 2 dB steps with

selectable characteristic

· Analog Step Interpolation (ASI) minimizes pops by

smoothing out the transitions in the audio signal when a

switch is made

· Audio Blend Control (ABC) minimizes pops by

automatically incrementing the volume and loudness

controls through each step between their present

settings and the new settings

· Rear Seat Audio (RSA) can select different sources for

the front and rear speakers

· Chime input: can be sent to any audio output, at any

volume level

· Chime adder circuit: chime input can also be summed

with left front and/or right front audio, or be turned off.

2 GENERAL DESCRIPTION

The TEA6880H is a monolithic bipolar integrated circuit

providing the stereo decoder function and ignition noise

blanking facility combined with source selector and

tone/volume control for AM/FM car radio applications. The

device operates with a power supply voltage range of

7.8 to 9.2 V and a typical current consumption of 40 mA.

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