1
AN 99040
TEA684x FAMILY
A NICE RADIO
FOR
NEW IN CAR
ENTERTAINMENT
Version 2.0
APPLICATION NOTE
TEA 6840H A NICE RADIO
APPLICATION NOTE
for New In Car Entertainment
AN 99040
2
The IC TEA 6840 and its derivative versions TEA 6845 / 6846 are for small
dimensioned Electronic Tuned AM/FM Car Radio receiver in global applications.
They carry the following functions:
* AM receiver for long- , medium- and short- wave (up to 49 m) with
. noise-blanking and weak signal control.
* FM receiver with
. image cancelling on chip;
. world-wide FM- application flexibility;
. keyed AGC;
. weather band included.
* A fast tuning Synthesizer with on chip control for inaudible RDS-AF updating.
* Digital Automatic Alignment for FM- RF circuit and for RF-fieldstrength indication.
AM and FM operate with high application flexibility, given by peripheral components
and by software control via I2C-bus.
Abstract
TEA 6840H A NICE RADIO
APPLICATION NOTE
for New In Car Entertainment
AN 99040
3
TEA684x-Family
A NICE RADIO
FOR
NEW IN CAR ENTERTAINMENT
Author(s):
Gerrit van Werven, SLE-Eindhoven
Sjakko Sandee , SLE-Eindhoven
System Laboratory Eindhoven,
The Netherlands>
Keywords
One chip AM/FM
Car Radio Receiver
Integrated FM image rejection
NICE
With acknowledgements for their valuable contribution to Joop Beunders, Hein van den Heuvel,
Kave Kianush, Oswald Moonen, Huub Vereijken and Martin Verheijden from SLE
and to Wim van Dooremolen, Analog Advice.
Date: 01 Nov 2004
TEA 6840H A NICE RADIO
APPLICATION NOTE
for New In Car Entertainment
AN 99040
4
Summary
The TEA 6840H, in a QFP64 package, is a complete, highly-reliable/