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U3501BM
Cordless Telephone Signal Processor
Description
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Cordless telephone signal processor reduces the need for many external components.
Features
RF Receiver Part IF converter, FM demodulator, RSSI-digital information coding, transmit and receive part adjustable and mutable by serial bus, compander, pre-/ de-emphasis, scrambler with bypass function
LF Part Microphone amplifier, earpiece amplifier, compander, preemphasis, deemphasis, scrambler, descrambler, digital power management, data management by FSK Application: CT1, CT1P, 900 MHz USA standard Package: SO28
Block Diagram
MIXO IFIN1 IFIN2 DACO RECDC
MIXIN MIXGND
Á Á
OSCILATOR 11.15MHz
DIVI Switched Cap. Divider.