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U4276B Datasheet, PDF (1/8 Pages) TEMIC Semiconductors – FM Multipath Noise Cancellation
U4276B
FM Multipath Noise Cancellation
Description
The U4276B is a bipolar integrated multipath noise cancellation circuit. It is designed for high performance car radio
applications.
Features
D Preparation of the fieldstrength signal
D Multipath noise cancellation
D Mute function controllable by microcomputer
D Suitable for analogue as well as digital processing
D Only a few external components necessary
Block Diagram
2
FSIN
BFSOUT
7
Buffer
VS
6
Bandgap
3
GND
1
AVFS
4
MPXIN
95 10619
Multipath
detection
Multipath
noise
cancellation
8
MUTE
5
MPXOUT
Pin Description
Pin Symbol
Function
1 AVFS Average of fieldstrength signal
2
FSIN Fieldstrength input
3
GND Ground
4 MPXIN Multiplex input signal
5 MPXOUT Multiplex output signal
6
VS Supply voltage
7 BFSOUT Buffered fieldstrength output
8 MUTE External mute input
AVFS 1
FSIN 2
GND 3
MPXIN 4
8 MUTE
7 BFSOUT
6 VS
5 MPXOUT
95 10632
TELEFUNKEN Semiconductors
1 (8)
Rev. A1, 05-Sep-96
Preliminary Information