TDA7541 Datasheet PDF - STMicroelectronics
| Part Number | TDA7541 | |
| Description | AM/FM Car Radio Tuner IC | |
| Manufacturers | STMicroelectronics | |
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TDA7541
AM/FM car radio tuner IC with stereo decoder
and intelligent selectivity system
Features
■ FM part
www.DataSheet4U.com–
–
–
AGC generation by RF and IF detection
I/Q mixer for 1st IF 10.7MHz with image
rejection
Mixer for 2nd IF 450kHz
– Internal 450kHz band pass filter with
bandwidth control by ISS
– Fully integrated FM demodulator with noise
cancellation
■ AM part
– Wide and narrow AGC generation
– Mixer for 1st IF 10.7MHz, AM upconversion
– Mixer for 2nd IF 450kHz
– Integrated AM-demodulator
– AM IF noise blanking
■ Stereo decoder
– PLL with adjustment free, fully integrated
VCO
– Automatic pilot dependent
MONO/STEREO switching
– Programmable ROLL-OFF compensation
– High cut and stereo blend-characteristics
programmable
– Dedicated RDS mute
– Audio noise blanker
■ Additional features
– VCO for world tuning range
LQFP64
– High performance fast PLL for RDS-
System
– IF counter for FM and AM with search stop
signal
– Quality detector for level, deviation,
adjacent channel and multipath
– ISS (Intelligent selectivity system) for
cancellation of adjacent channel and noise
influences
– Adjacent channel mute
– Fully electronic alignment
– Independend weather band input
– All functions I2C bus controlled
Description
The TDA7541 is a high performance tuner circuit
with stereo decoder for AM/FM car radio. It
contains a mixer, IF amplifier, demodulator for AM
and FM, stereo decoder, quality detection, ISS
filter and PLL synthesizer with IF counter on a
single chip. Use of BICMOS technology allows the
implementation of several tuning functions and a
minimum of external components.
Table 1. Device summary
Order code
TDA7541
TDA7541TR
TDA7541W
TDA7541WTR
Package
LQFP64 (10 x 10 x 1.4mm)
LQFP64 (10 x 10 x 1.4mm)
LQFP64 (14 x 14 x 1.4mm)
LQFP64 (14 x 14 x 1.4mm)
Packing
Tray
Tape and reel
Tray
Tape and reel
January 2008
Rev 3
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www.st.com
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TDA7541
List of figures
List of figures
Figure 1.
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Figure 7.
www.DataSheet4UF.ciogmure 8.
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Figure 16.
Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Programming of HC filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Programming of stereo blend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Adaptive threshold control of noise blanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Stereo blend controlled threshold adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Deviation controlled threshold adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Block diagram FM part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Block diagram VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Block diagram ISS function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Block diagram AM path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Block diagram stereo decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Block diagram audio noise blanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Block diagram multi path detection for stereo decoder. . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
LQFP64 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TDA7541 electronic component. |
| Information | Total 70 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ TDA7541.PDF Datasheet ] | |
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