Datasheet Details
| Part number | U4488B |
|---|---|
| Manufacturer | TEMIC Semiconductors |
| File Size | 272.09 KB |
| Description | Quasi-Split Sound Circuit and AM Demodulator |
| Datasheet |
 U4488B Datasheet
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Description
The U4488B is an integrated bipolar circuit for full multistandard sound IF signal processing in TV/VTR and Multimedia applications.
It supplies AM signals as well as FM/NICAM sound IF signals and thus allows the design of a universal sound IF module for various applications.
Features
- 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.