參數(shù)資料
型號(hào)： U3501BM
英文描述： Cordless Telephone Signal Processor
中文描述： 無(wú)繩電話信號(hào)處理器
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 324K
代理商： U3501BM
U3501BM
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 29-Jul-96
1 (20)
Cordless Telephone Signal Processor
Description
Cordless telephone signal processor reduces the need for
many external components.
Features
RF Receiver Part
IF converter, FM demodulator, RSSI-digital information
LF Part
Microphone amplifier, earpiece amplifier, compander,
preemphasis, deemphasis, scrambler, descrambler,
digital power management, data management by FSK
coding, transmit and receive part adjustable and mutable
by serial bus, compander, pre-/ de-emphasis, scrambler
with bypass function
Application:
CT1, CT1P, 900 MHz USA standard
Package:
SO28
Block Diagram
ááá
ááá
LPF
LPF
LPF
LPF
D/A
á
á
MIXO
IFIN2
RXO
ETC
EXIN
RECO2
RECO1
TXDAT
MIC1
MICO
LOEXT
NC
VBAT
C
D
VCC
TXO
DIVI
Switched Cap.
Divider.
RDEMO
RGAIN
ADJ
Scrambler frequency
DFIL
EXPANDER
RECOUT
MIC
COMPRESSOR
TGAIN
ADJ.2
PFIL
INTBUS
Serial
Bus
BATD
Battery low
detector
FSK
MODEM
Scrambler frequency
RXDAT
MIC2
COIN
CTC
MIXIN
GND
IFIN1
IFAMP
LOG
RSSI
OSCILATOR
11.15MHz
MIXGND
LOIN
TGAIN
ADJ.1
Modem
RECDC
DACO
12386
Figure 1.
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