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U4275B 参数 Datasheet PDF下载

U4275B图片预览
型号: U4275B
PDF下载: 下载PDF文件 查看货源
内容描述: FM接收状态分析仪和多路径噪音消除 [FM-Receiving Condition Analyser and Multipath Noise Cancellation]
分类和应用:
文件页数/大小: 12 页 / 126 K
品牌: TEMIC [ TEMIC SEMICONDUCTORS ]
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TELEFUNKEN Semiconductors
U4275B
FM-Receiving Condition Analyser and Multipath Noise
Cancellation
Description
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.
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
V
S
10
94 8644
16
GND1
MUTE MPFIL
GND2
VREF
MPXIN MPXOUT
Rev. A1: 14.03.1995
Preliminary Information
1