TDA7540B Fast Delivery |IC PHOENIX CO.,LIMITED

TDA7540B ,Am/FM Tuner with Stereodecoder and IssFunctional description of the multipath-detector . . 304.3.4 Quality detector . . . 314.3. ..
TDA7540N ,AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)electrical characteristics . . . . . . . 25Table 10. Address organization . . . . . 39Ta ..
TDA7541 ,AM/FM car radio tuner IC w stereo decoder and intelligent selectivity systemAbsolute maximum ratings . 10Table 5. Globals 10Table 6. FM section . . . . . ..
TDA7541B ,AM/FM car radio tuner IC w stereo decoder and intelligent selectivity systemAbsolute maximum ratings . 10Table 5. Globals 10Table 6. FM section . . . . . ..
TDA7541W ,AM/FM car radio tuner IC w stereo decoder and intelligent selectivity systemFeatures – IF counter for FM and AM with search stop signal FM part– Quality detector for level, d ..
TDA7546 , Multichip module for TMC tuner applications
THS4081CD ,175-MHz Low-Power Voltage-Feedback Amplifiermaximum ratings” may cause permanent damage to the device. These are stress ratings only andfunctio ..
THS4081CDGN ,175-MHz Low-Power Voltage-Feedback Amplifier SLOS274D − DECEMBER 1999 − REVISED JUNE 2001T ..
THS4081CDGNR ,175-MHz Low-Power Voltage-Feedback Amplifiermaximum ratings over operating free-air temperature (unless otherwise noted)Supply voltage, V . . . ..
THS4081CDR ,175-MHz Low-Power Voltage-Feedback Amplifier SLOS274D − DECEMBER 1999 − REVISED JUNE 2001T ..
THS4081CDRG4 ,175-MHz Low-Power Voltage-Feedback Amplifier 8-SOIC 0 to 70block diagram2IN−6OUT3IN+Figure 1. THS4081 − Single ChannelVCC1IN−1OUT1IN+2IN−2OUT2IN+−VCCFigure 2. ..
THS4081ID ,175-MHz Low-Power Voltage-Feedback Amplifiermaximum ratings over operating free-air temperature (unless otherwise noted)Supply voltage, V . . . ..

TDA7540B
Am/FM Tuner with Stereodecoder and Iss
September 2013 Rev 2 1/75
TDA7540B
AM/FM Car Radio Tuner IC with Stereo Decoder and
Intelligent Selectivity System (ISS)
Features
FM-Part RF AGC generation by RF and IF detection I/Q mixer for 1st FM IF 10.7MHz with image
rejection Mixer for 2nd IF 450kHz Internal 450KHz bandpass filter with bandwidth
control by ISS Fully integrated FM-demodulator with spike
cancellation
AM-Part Wide and narrow AGC generation Mixer for 1st IF 10.7MHz, AM upconversion Mixer for 2nd IF 450kHz, AM downconversion Integrated AM-demodulator AM IF- and audio noise blanking
Stereodecoder 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 Internal noise blanker with several threshold
controls
Additional Features VCO for world tuning range 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 All functions I2 C-Bus controlled
Description
The TDA7540B is a high performance tuner
circuit for AM/FM car radio. It contains mixer, IF
amplifier, demodulator for AM and FM,
stereodecoder, 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.
Order codes
Contents TDA7540B
2/75
Contents Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pins description and connection diagrams . . . . . . . . . . . . . . . . . . . . . . 5
2.1 TQFP80 pins connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.1 Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.2 FM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.3 AM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.4 Stereodecoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.5 PLL section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1 FM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.1 Mixer1, AGC and 1.IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.2 Mixer2, limiter and demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.3 Quality detection and ISS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.4 Soft mute control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2 AM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3 Stereodecoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.1 Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.2 Functional description of the noise blanker . . . . . . . . . . . . . . . . . . . . . . 29
4.3.3 Functional description of the multipath-detector . . . . . . . . . . . . . . . . . . 30
4.3.4 Quality detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.3.5 AFS control and stereo decoder mute . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4 PLL and if counter section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.1 PLL frequency synthesizer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.2 IF counter block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5 I2 C-Bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
TDA7540B Contents
3/75
4.5.1 Data transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.2 Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.3 Stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5.5 Data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5.6 Device addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5.7 Write operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5.8 Read operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Software specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.1 Address organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.2 Control register function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.2.1 Data Byte Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Part List (Application and measurment circuit) . . . . . . . . . . . . . . . . . . 70 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Block diagram TDA7540B
1 Block diagram
TDA7540B Pins description and connection diagrams
5/75 Pins description and connection diagrams
2.1 TQFP80 pins connection diagram
Figure 2. TQFP80 pins connection (top view)
2.2 Pin description

Table 1. Pin description

Partno	Mfg	Dc	Qty	Available	Descript
TDA7540B	ST,ST	N/a	42660	avai	Am/FM Tuner with Stereodecoder and Iss