TDA8745 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA8745 Datasheet PDF : 40 Pages
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Philips Semiconductors
Satellite sound receiver with I2C-bus control
Preliminary specification
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)
• Demodulation of two audio signals by wide band
Phase-Locked Loops (PLLs)
• Audio level control after PLL (modulation depth setting)
• Noise Reduction (NR) bypass for use with main audio
signals
• Left, right and mono output [1⁄2(l + r)] on SCART level
• External audio inputs (for decoder connection)
• Selectable de-emphasis (DEEM) 50 µs, 75 µs, J17 and
flat response
• I2C-bus control of all functions
• Two selectable addresses
• Carrier presence detector with automatic mute option.
APPLICATIONS
• Satellite receivers
• TV sets
• Video recorders.
GENERAL DESCRIPTION
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.
The pin numbers mentioned in this publication refer to the
SDIP42 package; unless otherwise indicated.
ORDERING INFORMATION
TYPE
NUMBER
TDA8745
TDA8745H
NAME
SDIP42
QFP44
PACKAGE
DESCRIPTION
plastic shrink dual in-line package; 42 leads (600 mil)
plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10 × 10 × 1.75 mm
VERSION
SOT270-1
SOT307-2
1996 Mar 11
2
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