U4488B - Quasi-Split Sound Circuit and AM Demodulator

Product Overview

TEMIC Semiconductors

Part number	U4488B
Manufacturer	TEMIC Semiconductors
File Size	272.09 KB
Description	Quasi-Split Sound Circuit and AM Demodulator
Datasheet	U4488B Datasheet
Additional preview pages of the U4488B datasheet.

The U4488B is an integrated bipolar circuit for full multistandard sound IF signal processing in TV/VTR and Multimedia applications.

D 5-V supply voltage; low power consumption D Gain-controlled 3-stage wideband IF amplifier D Active carrier generation by FPLL principle (frequency-phase-locked-loop) for true quadrature demodulation D Complete alignment-free AM demodulator D Switchable amplitude detector for gain control, which operates as a peak detector for FM sound and as a mean level detector for AM sound D Two symmetrical IF inputs Block Diagram IF1/IF2 S3 11 1 2 IF-Amp 12 Intercarrier (FM) 4 14 REF FPLL VS Loop filter.

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Published: Dec 14, 2005 |