TDA7541W datasheet, PDF - EEWORLD Datasheet

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TDA7541W: DescriptionAM/FM car radio tuner IC with stereo decoder and intelligent selectivity system; CategoryWireless rf/communication Telecom circuit; File Size757KB，76 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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TDA7541W Overview

AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

TDA7541W Parametric

Parameter Name	Attribute value
Brand Name	STMicroelectronics
Is it Rohs certified?	conform to
Maker	STMicroelectronics
Parts packaging code	QFP
package instruction	14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
Contacts	64
Reach Compliance Code	compli
ECCN code	EAR99
JESD-30 code	S-PQFP-G64
Number of functions	1
Number of terminals	64
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	QFP
Package shape	SQUARE
Package form	FLATPACK
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Nominal supply voltage	8.5 V
surface mount	YES
technology	BICMOS
Telecom integrated circuit types	TELECOM CIRCUIT
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED

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TDA7541

AM/FM car radio tuner IC with stereo decoder

and intelligent selectivity system

Features

■

FM part

– AGC generation by RF and IF detection

– I/Q mixer for 1

IF 10.7MHz with image

rejection

– Mixer for 2

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 1

IF 10.7MHz, AM upconversion

– Mixer for 2

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 I

C 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 (14 x 14 x 1.4mm)

Packing

Tray

Tape and reel

Tray

Tape and reel

January 2008

Rev 3

1/76

www.st.com

Contents

TDA7541

Contents

Block circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pin connection and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1

2.2

Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical specifications and characteristics . . . . . . . . . . . . . . . . . . . . 10

3.1

3.2

3.3

Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1

FM part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1.1

4.1.2

4.1.3

4.1.4

4.1.5

4.1.6

Mixer 1 AGC and IF amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Mixer2, limiter, FM demodulator and spike cancellation . . . . . . . . . . . . 27

Quality detection and ISS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Block diagram quality detection principle . . . . . . . . . . . . . . . . . . . . . . . . 30

Weak signal mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Weather band input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.2

4.3

AM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Stereo decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.3.1

4.3.2

4.3.3

4.3.4

4.3.5

Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Noise blanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Functional description of the multipath detector . . . . . . . . . . . . . . . . . . 37

Quality detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

AFS control and stereo decoder mute . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.4

PLL and IF counter section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4.4.1

4.4.2

PLL frequency synthesizer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

IF counter block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4.5

C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Software specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.1

Address organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2/76

List of tables

TDA7541

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Table 19.

Table 20.

Table 21.

Table 22.

Table 23.

Table 24.

Table 25.

Table 26.

Table 27.

Table 28.

Table 29.

Table 30.

Table 31.

Table 32.

Table 33.

Table 34.

Table 35.

Table 36.

Table 37.

Table 38.

Table 39.

Table 40.

Table 41.

Table 42.

Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

FM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

AM section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Stereo decoder section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

PLL section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

ISS filter control by I

C bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Internal ISS control signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ISS control modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Address organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

C control bit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Subaddress description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Addr 0 TPLL charge pump control (0Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Addr 1 TPLL Counter 1 (LSB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Addr 2 TPLL Counter 2 (MSB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Addr 3 TV(00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Addr 4 TV/IF Counter (FM ACh , AM 1Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Addr 5 TPLL Divider (FM 3Dh , AM 2Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Addr 6 AGC (FM 06h, AM 2Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Addr 7 Quality AC (FM 50h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Addr 8 Quality ACM/MP (FM 6Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Addr 9 Quality Dev (FM 49h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Addr 10 Quality MUX/FSU (FM 0Eh , AM 0Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Addr 11 Weak Signal Mute (FM A8h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Addr 12 AM IF NB (AM B1h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Addr 13 XTAL adjust(80h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Addr 14 IF2 adjust (FM E8h, AM 08h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Addr 15 IQ adjust / Switch (FM E7h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Addr 16 FM keying AGC (FM 1Dh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Addr 17 Roll off / Level gain (77h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Addr 18 SD Stereoblend / AM corner frequency (0Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Addr 19 SD High cut (2Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Addr 20 SD MP (FM 97h, AM 3Fh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Addr 21 SD Quality (FFM 7Ah, AM FAh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Addr 22 SD NB I (FM 05h, AM 04h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Addr 23 SD NB II (FM E2h, AM C2h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Addr 24, 26, 27, 28, 29 testing (FEh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Addr 25 Testing (FEh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

4/76

TDA7541

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

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

5/76

TDA7541W Related Products

	TDA7541W	TDA7541	TDA7541TR	TDA7541WTR
Description	AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system	AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system	AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system	AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
Maker	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Parts packaging code	QFP	QFP	QFP	QFP
package instruction	14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64	10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64	10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64	14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
Contacts	64	64	64	64
Reach Compliance Code	compli	compli	compli	compli
JESD-30 code	S-PQFP-G64	S-PQFP-G64	S-PQFP-G64	S-PQFP-G64
Number of functions	1	1	1	1
Number of terminals	64	64	64	64
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	QFP	LFQFP	LFQFP	QFP
Package shape	SQUARE	SQUARE	SQUARE	SQUARE
Package form	FLATPACK	FLATPACK, LOW PROFILE, FINE PITCH	FLATPACK, LOW PROFILE, FINE PITCH	FLATPACK
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Nominal supply voltage	8.5 V	8.5 V	8.5 V	8.5 V
surface mount	YES	YES	YES	YES
technology	BICMOS	BICMOS	BICMOS	BICMOS
Telecom integrated circuit types	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal location	QUAD	QUAD	QUAD	QUAD

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