TDA8745H-T

更新时间： 2024-02-05 19:41:30

品牌	Logo	应用领域
恩智浦 - NXP		光电二极管接收机
页数	文件大小	规格书
40页	264K
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TDA8745H-T 数据手册

Philips Semiconductors

Preliminary speciﬁcation

Satellite sound receiver with I²C-bus control

TDA8745

FEATURES

• On-chip frequency synthesizer and mixer:

– tuning range 4 to 9.77 MHz

– reference oscillator 4 MHz (using a crystal or 4 MHz

frequency source)

• IF input switches allowing selection of various IF

bandwidths (wide or narrow)

APPLICATIONS

• Demodulation of two audio signals by wide band

Phase-Locked Loops (PLLs)

• Satellite receivers

• TV sets

• Audio level control after PLL (modulation depth setting)

• Video recorders.

• Noise Reduction (NR) bypass for use with main audio

signals

GENERAL DESCRIPTION

• Left, right and mono output [¹⁄₂(l + r)] on SCART level

The TDA8745 is the successor of the TDA8740 and

TDA8741. The device contains the functionality of the

TDA8740 and TDA8741 together with a synthesizer, mixer

and I²C-bus control.

• External audio inputs (for decoder connection)

• Selectable de-emphasis (DEEM) 50 µs, 75 µs, J17 and

flat response

• I²C-bus control of all functions

The pin numbers mentioned in this publication refer to the

SDIP42 package; unless otherwise indicated.

• Two selectable addresses

• Carrier presence detector with automatic mute option.

ORDERING INFORMATION

TYPE

PACKAGE

NUMBER

NAME

DESCRIPTION

VERSION

SOT270-1

SOT307-2

TDA8745

SDIP42

QFP44

plastic shrink dual in-line package; 42 leads (600 mil)

TDA8745H

plastic quad ﬂat package; 44 leads (lead length 1.3 mm);

body 10 × 10 × 1.75 mm

1996 Mar 11

123 4 5 6 7...40

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