TEMIC Semiconductors U4275B
The U4275B is a bipolar integrated receiving conditions analyser as well as multipath noise cancellation circuit. It is designed for high performance car radio applications. The fieldstrength voltage at FSIN is initially buffered so as not to impair the characteristics of the IF IC and is available at BFSOUT.| Part No. | U4275B |
|---|---|
| Datasheet | U4275B Download |
| Manufacturer |  TEMIC Semiconductors |
| Description | FM-Receiving Condition Analyser and Multipath Noise Cancellation |
| Buy | Stock & Price |
DESCRIPTION
FEATURES
D Preparation of the fieldstrength signal D Detection of multipath and common channel interferences D Evaluation of the receiving conditions by microcomputer D D D D D Interrupt output for abruptly occuring interferences Suitable for analogue as well as digital processing Mute function controllable by microcomputer Multipath noise cancellation Only a few external components necessary Block diagram FIL19 20 CRIN 14 Oscillator Common channel detector Filter Interference interrupt 9 INT FIL26 19 CCHFIL 17 12 Reset Address logic 1 FSIN AVFS 3 Multipath detector Analogue multiplex 11 13 15 ADDR0 ADDR1 OE ANAOUT 2 BFSOUT Buffer MNC control Multipath Noise Cancellation (Gain 1.5) 18 4 5 6 8 Bandgap 7 VS 10 94 8644 16 GND1 MUTE MPFIL GND2 VREF MPXIN MPXOUT Rev. A1: 14.03.1995 Preliminary Information 1 U4275B Pin description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol FSIN BFSOUT AVFS MPXIN GND2 MPXOUT VS VREF INT MUTE ANAOUT ADDR0 ADDR1 CRIN OE GND1 CCFIL...
