U4454B Datasheet

IC型號：
U4454B
PDF描述：
Quasi-Split-Sound Processing and AM-Demodulator
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109.83KB
PDF頁數(shù)：
7頁
芯片廠家：
TEMIC

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U4454B

Quasi-Split-Sound Processing and AM-Demodulator

Description

The U4454B quasi-split-sound processor is a bipolar

integrated circuit for all FM-TV standards and NICAM

sound systems. For FM/NICAM the IC operates as

QSS-mixer. In case of AM sound the circuit can be used

as AM demodulator.

Features

PLL intercarrier-mixer for all FM standards

(incl. NICAM sound system)

High input sensitivity

Wide supply voltage range (6.8 V up to 13 V)

Low power consumption

ESD protection

Case:

16-pin DIL plastic

High grade signal processing for FM/NICAM

sound systems

Also suitable as AM-demodulator

Gain controlled wideband amplifier

AGC operates as a peak- and mean-level detector

Block Diagram

VCO Tank

Loop filter

93 7653

Lock

detector

IF Input

Video

VCO

90擄

0擄

Interference

rejection

Output

Overload

detector

+/鈥?/div>

Lock

detector

AGC

IF AGC

Average

Figure 1.

TELEFUNKEN Semiconductors

Rev. A1, 23-Feb-96

1 (7)

Preliminary Information

型號

版本

描述

廠商

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U4454B Datasheet

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