U4276B Datasheet | TEMIC Semiconductors

.. 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 microputer D Suitable for analogue as well as digital processing D Only a few external ponents necessary Block Diagram BFSOUT 7 2 FSIN Buffer Bandgap VS 6 3 GND 1 AVFS 4 MPXIN Multipath detection Multipath noise cancellation 8 5 MPXOUT 95 10619 MUTE Pin Description Pin 1 2 3 4 5 6 7 8 Symbol AVFS FSIN GND MPXIN MPXOUT VS BFSOUT MUTE Function Average of fieldstrength signal Fieldstrength input Ground Multiplex input signal Multiplex output signal Supply voltage Buffered fieldstrength output External mute input AVFS 1 FSIN 2 GND 3 MPXIN 4 95 10632 8 MUTE 7 BFSOUT 6 VS 5 MPXOUT TELEFUNKEN Semiconductors Rev. A1, 05-Sep-96 1 (8) Preliminary Information FSIN / BFSOUT VS 40 m A FSIN 94 8647 MPXIN / MPXOUT VS 50 k W MPXIN BFSOUT 50 k W 94...