ST TDA7540B User Manual

CD00108485 Rev 1.0 ACTIVE PAGE A

AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent

Selectivity System (ISS)

Datasheet

DOCUMENT HISTORY

Version Release Date Change Qualifier

Rev 1.0 Initial Release

Initial Edocs version

CD00108485 Rev 1.0 ACTIVE PAGE B

DOCUMENT APPROVAL

Name Function Date

Brasca, Guido Market Com 11−May−2006

Bosisio, Savino Corporate Com 11−May−2006

CD00108485 Rev 1.0 ACTIVE PAGE C

REFERENCED DOCUMENTS

Document Id Document Type Document Title Relation Name

No References

CD00108485 Rev 1.0 ACTIVE PAGE D

CUSTOM ATTRIBUTES

Alternate Identifier(s) 12326 Alternate Name Confidentiality Level Public ECN Number Original ID Original Repository Revalidation Date Status ACTIVE Publishing scope Public Root Part Number(s) TDA7540B

DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 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 I

Description

The TDA7540 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.

TQFP80

2

C-Bus controlled

Order codes

Part number Temp range, °CPackage Packing

TDA7540B -40 to 85 TQFP80 Tube

May 2006 Rev 1 1/75

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Contents TDA7540B

Contents

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Pins description and connection diagrams . . . . . . . . . . . . . . . . . . . . . . 5

2.1 TQFP80 pins connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 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

4 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 I2C-Bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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TDA7540B Contents

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

5 Software specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.1 Address organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.2 Control register function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.2.1 Data Byte Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

7 Part List (Application and measurment circuit) . . . . . . . . . . . . . . . . . . 70

8 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

10 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

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Block diagram TDA7540B

1 Block diagram

Figure 1. Block circuit diagram

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TDA7540B Pins description and connection diagrams

2 Pins description and connection diagrams

2.1 TQFP80 pins connection diagram

Figure 2. TQFP80 pins connection (top view)

IF1AMP1IN

IF1REF

IF1AMP1OUT

VCCIF1

IF1AMP2IN

AMDETC

IF1AMP2OUT

AMRFAGCTC

FMM1X2REF

FMM1X2IN

VCC2

AMMIX2OUT1

AMMIX2OUT2

GNDVCC2

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

VREF1

RXIN0AMIF2IN

MPXW

GNDDEM

FMREFDEMC

AMIF2REF

AMIF2BPF

MPXOUT

AFS

VCCSTEREO

MPXIN

MUTETC

MPTC

GNDSTEREO

QUALYOUT

FSWO

VCC1

L

R

GNDVCC1

MIX1 OUT1

TEST1

DEVTC

AMMIX1IN

AMMIX1REF

AMRFAGCOUT

AMPINDR

FMPINDR

FMMIX1IN1

GNDRF

FMMIX1IN2

TV1

TV2

ISSSTATUS

FMAGCTC

VCOB

VCOE

VCCVCO

S1

S2

TEST2

MIX1OUT2

79

80

1

2

3

4

5

6

7

8

9

10

12

13

14

15

16

17

18

19

20

21 22 23 24 25

GNDIF1

IF1AGCIN

AMAGC2TC

75 74 73 727071 69 68 67 66 65

76

77

78

26 27 28 29 30

AMREFDEMC

311132 33 34 35 36

64 63 62 61

37 38 39 40

2.2 Pin description

Table 1. Pin description

Pin No. Pin Name Function

1 MIX1OUT1 Mixer Tank 10.7MHz

2 TEST1 Testing I/O Pin

3 DEVTC Deviation Detector Time Constant

4 AMMIX1IN AM Mixer1 Input

5 AMMIX1REF AM Mixer1 Reference

6 AMRFAGCOUT Output AM RF AGC

7 AMPINDR AM PIN Diode Driver Output

8 FMPINDR FM PIN Diode Driver Output

9 FMMIX1IN1 FM Mixer1 Input1

10 GNDRF RF Ground

11 FMMIX1IN2 FM Mixer1 Input2

FSU

GNDVCO

ADJCH

AMST/MP

XTALG

INLOCK

ISSTC1

ISSTC2

XTALD

SSTOP

SDA

SCL

FSTC

LPOUT

GNDVCC3

VCC3

VREF2

LPAM

LPFM

LPHC

D05AU1618

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Pins description and connection diagrams TDA7540B

Table 1. Pin description (continued)

Pin No. Pin Name Function

12 TV1 Tuning Voltage Preselection1

13 TV2 Tuning Voltage Preselection2

14 ISSSTATUS ISS Filter Status Output

15 S1 Free Programmable Switching Output

16 FMAGCTC FM AGC Time Constant

17 S2 Free Programmable Switching Output

18 VCOB VCO Input Base

19 VCOE VCO Output Emitter

20 VCCVCO VCO Supply

21 GNDVCO VCO Ground

22 FSU Unweighted Fieldstrength Output

23 ADJCH Ident. Adjacent Channel Output

24 AMST/MP AM Stereo Output / Ident. Multipath Output

25 INLOCK PLL Inlock Information Output

26 XTALG Xtal Oscillator to MOS Gate

27 ISSTC1 Time Constant1 ISS Filter Switch

28 ISSTC2 Time Constant2 ISS Filter Switch

29 XTALD Xtal Oscillator to MOS Drain

30 SSTOP Search Stop Output

2

31 SDA I

32 SCL I

33 FSTC S-meter Filtering Capacitor

34 GNDVCC3 VCC3 Ground

35 LPOUT Op Amp Output to PLL Loop Filters

36 VCC3 Supply Tuning Voltage

37 VREF2 Voltage Reference for PLL Op Amp

38 LPAM Op Amp Input to PLL Loop Filters AM

39 LPFM Op Amp Input to PLL Loop Filters FM

40 LPHC High Current PLL Loop Filter Input

41 GNDVCC1 Digital Ground

42 R Stereodecoder Output Right

43 L Stereodecoder Output Left

44 VCC1 Digital Supply

45 FSWO Weighted Fieldstrength Output with programmable DC offset

46 Qualyout Stereodecoder Quality Output

47 GNDSTEREO Strereodecoder Ground

48 MPTC Multipath Time Constant

49 MUTETC Weak Signal Mute Time Constant

C-Bus Data

2

C-Bus Clock

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TDA7540B Pins description and connection diagrams

Table 1. Pin description (continued)

Pin No. Pin Name Function

50 MPXIN Stereodecoder Input

51 VCCSTEREO Stereodecoder Supply

52 AFS Alternative Frequency Search Drive

53 MPX/AFAM MPX Output / AM AF Output

54 AMIF2BPF AM IF2 Bandpass Filter

55 AMIF2REF Reference Voltage AM IF2 Amplifier

56 FMREFDEMC FM Demodulator Reference

57 GNDDEM Ground FM Demodulator

58 MPXW MPX Output without ISS Filtering

59 AMIF2IN Input AM IF2

60 VREF1 Reference 5V

61 GNDVCC2 Analog Ground

62 AMMIX2OUT2 AM Tank 450kHz

63 AMMIX2OUT1 AM Tank 450kHz

64 VCC2 Analog Supply

65 FMMIX2IN FM IF1 Mixer2 Input

66 FMMIX2REF FM IF1 Mixer2 Reference

67 AMRFAGCTC AM RF AGC Time Constant

68 IF1AMP2OUT IF1 Amplifier2 Output

69 AMDETC AM Detector Capacitor

70 AMREFDEMC AM Demodulator Reference

71 IF1AMP2IN IF1 Amplifier2 Input

72 VCCIF1 IF1 Supply

73 IF1AMP1OUT IF1 Amplifier1 Output

74 IF1REF IF1 Amplifier Reference

75 IF1AMP1IN IF1 Amplifier1 Input

76 GNDIF1 IF1 Ground

77 IF1AGCIN IF1 AGC Input

78 AMAGC2TC AM AGC2 Time Constant

79 TEST2 Testing I/O Pin

80 MIX1OUT2 Mixer Tank 10.7MHz

2.3 Thermal data

Table 2. Thermal data

Symbol Parameter Value Unit

R

th(j-amb)

Thermal Resistance Junction to ambient Max.

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55

°C/W

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Electrical specifications TDA7540B

3 Electrical specifications

3.1 Absolute maximum ratings

Table 3. Absolute maximum rating

Symbol Parameter Value Unit

V

T

V

Supply voltage 9.5 V

S

Ambient temperature -40 to 85 °C

amb

Storage temperature -55 to 150 °C

stg

ESD protection (Human Body Model) ±1500 V

ESD

ESD protection (Machine Model) ±150 V

ESD

ESD protection (Change Device Model) ±750 V

ESD

3.2 Electrical characteristics

3.2.1 Globals

Table 4. Electrical characteristics

Item Symbol Parameter Test conditions Min. Typ. Max. Unit

1 Supply

1.1 V

1.2 V

1.3 V

1.4 V

1.5 V

1.6 V

1.7 V

1.8 V

1.9 I

1.10 I

1.11 I

1.12 I

1.13 I

1.14 I

1.15 I

(T f

Xtal

CC1

CC2

CC3

CCVCO

CCMIX1

CCMIX2

CCIF1

CCST

CC1

CC2

CC3

CCVCO

CCMIX1

= 25°C, V

amb

CC1

= V

CC2

= V

CC3

= V

CCST

= V

CCVCO

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 10.25MHz, in application circuit, unless otherwise specified).

Digital supply voltage 7.7 8.5 9 V

Analog supply voltage 7.7 8.5 9 V

Analog tuning voltage 7.7 8.5 9 V

VCO supply voltage 7.7 8.5 9 V

MIX1 supply voltage 7.7 8.5 9 V

MIX2 supply voltage 7.7 8.5 9 V

IF1 supply voltage 7.7 8.5 9 V

Stereo supply voltage 7.7 8.5 9 V

Supply current FM ON 10 mA

Supply current AM ON 10 mA

Supply current FM ON / VCO:3 90 mA

Supply current AM ON 90 mA

Supply current 4.5 mA

Supply current 8 mA

Supply current FM ON 8 mA

=8.5V,

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TDA7540B Electrical specifications

Table 4. Electrical characteristics (continued)

(T

= 25°C, V

amb

f

= 10.25MHz, in application circuit, unless otherwise specified).

Xtal

Item Symbol Parameter Test conditions Min. Typ. Max. Unit

CC1

= V

CC2

= V

CC3

= V

CCST

= V

CCVCO

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

=8.5V,

1.16 I

1.17 I

1.18 I

1.19 I

CCMIX1

CCMIX2

CCIF1

CCST

Supply current AM ON 7 mA

Supply current 5 mA

Supply current 13 mA

2 Reference Voltages

2.1 V

2.2 V

2

3I

C-Bus interface

3.1 f

3.2 V

3.3 V

3.4 I

3.5 V

REF1

REF2

SCL

Internal reference voltage I

= 0mA 5 V

REF1

= 0mA 2.5 V

REF2

Clock frequency 400 kHz

Input low voltage 1 V

IL

Input high voltage 3 5 V

IH

Input current -5 5 µA

IN

Output acknowledge

O

voltage

I

= 1.6mA 0.4 V

O

3.2.2 FM section

Table 5. Electrical characteristics

(T

= 25°C, V

amb

= 98MHz, dev= 40kHz, f

f

RF

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

CC1

= V

CC2

= V

MOD

= V

CC3

= 1kHz, f

= V

CCST

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

4 Wide Band RF AGC

4.1 V

4.2 V

9-11

Lower threshold start V16 = 2.5V 85 dBµV

Upper threshold start V16 = 2.5V 96 dBµV

5 Narrow Band IF & Keying AGC

5.1 V

5.2 V

5.3 V

Lower threshold start KAGC = off, V

77

Upper threshold start KAGC = off, V

77

Lower threshold start with

77

KAGC

KAGC = max, V

∆fIF=300KHz

KAGC = max,

5.4 V

Startpoint KAGC

22

V ∆fIF=300KHz f

5.5 ∆ Control range KAGC ∆V

5.6 R

Input resistance 10 kΩ

IN

= 0mV

9-11

= 0mV

9-11

generates FS level at V

IF1

= +0.8V 16 dB

22

= 0mV

RMS,

= 0mV

RMS

22

86 dBµV

98 dBµV

2.2 V

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Electrical specifications TDA7540B

Table 5. Electrical characteristics (continued)

(T

= 25°C, V

amb

f

= 98MHz, dev= 40kHz, f

RF

CC1

= V

CC2

= V

MOD

= V

CC3

= 1kHz, f

= V

CCST

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

5.7 C

Input capacitance 2.5 pF

IN

6 AGC Time Constant Output

V

6.1 V

6.2 V

6.3 I

6.4 I

Max. AGC output voltage V

16

Min. AGC output voltage V

16

Min. AGC charge current V

16

Max. AGC discharge

16

current

V

9-11

= 0mV

= 50mV

= 0mV

= 50mV

RMS

RMS,V16

= 2.5V -12.5 µA

= 2.5V 1.25 mA

REF1

+V

BE

0.5 V

V

7 AGC PIN Diode Driver Output

7.1 I

7.2 I

AGC OUT, current min. V

8

AGC OUT, current max. V

8

9-11

= 0mV

= 50 mV

, V8 = 2.5V 50 µA

RMS

, V8 = 2.5V -20 mA

RMS

8 I/Q Mixer1 (10.7MHz)

8.1 R

8.2 C

8.3 R

8.4 V

8.5 g

OUT

9,11

Input resistance differential 10 kΩ

IN

Input capacitance differential 4 pF

IN

Output resistance differential 100 kΩ

Input dc bias 3.2 V

Conversion

m

transconductance

17 ms

8.6 F Noise figure 400Ω generator resistance 3 dB

8.7 CP

1dB compression point referred to diff. mixer input 100 dBµV

1dB

8.8 IIP3 3rd order intermodulation 122 dBµV

8.9 IQP I/Q phase adjust PH -7 +8 °

8.10 IRR Image rejection ratio ratio wanted/image 30 40 dB

8.11 IRR Image rejection ratio with phase adjust 40 46 dB

9 IF1 Amplifier1 +2 (10.7MHz)

9.1 G2 Gain 6 dB

9.2 G1

9.3 G1

9.4 R

9.5 R

9.6 CP

OUT

Min. gain IFG1 9 dB

min

Max. gain IFG1 18 dB

max

Input resistance 330 W

IN

Output resistance 330 W

1dB compression point referred to 330Ω input 105 dBµV

1dB

9.7 IIP3 3rd order Intermodulation ref. to 330Ω input, 9dB gain 126 dBµV

10 Mixer2 (450kHz)

10.1 R

10.2 V

Input impedance 330 Ω

IN

Max. input voltage 119 dBµV

65

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TDA7540B Electrical specifications

Table 5. Electrical characteristics (continued)

(T

= 25°C, V

amb

f

= 98MHz, dev= 40kHz, f

RF

CC1

= V

CC2

= V

MOD

= V

CC3

= 1kHz, f

= V

CCST

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

10.3 V

Limiting sensitivity S/N = 20dB 28 dBµV

65

10.4 G Mixer gain 18 dB

11 Limiter 1 (450kHz)

11.1 G

Limiter

Gain 80 dB

12 Demodulator, Audio Output

12.1 THD

12.2 V

12.3 R

MPX

OUT

12.4 |∆V|

12.5 |∆V|

12.6 S/N

12.7 V

MPXW

Dev.= 75kHz, V 10mV

RMS

MPX output signal Dev.= 75kHz 500 mV

Output impedance 50 Ω

DC offset fine adjust DEM, MENA=1 8.5 mV

min

DC offset fine adjust DEM, MENA=1 264 mV

max

Dev.= 40kHz,V65 = 10mV

RMS

MPXW output signal Dev.= 75kHz 350 mV

=

65

0.1 %

RMS

76 dB

RMS

13 Quality Detection

S-meter, Unweighted Fieldstrength

13.1 V

13.2 V

13.3 V

13.4 ∆V

13.5 ∆V

13.6 ∆V

13.7 R

OUT

Min. input voltage MIX2 30 dBµV

65

Fieldstrength output V65 = 20dBµV0.1V

22

Fieldstrength output V65 = 119dBµV4.9V

22

voltage per decade SMSL = 0 1 V

22

voltage per decade SMSL = 1 1.5 V

22

S-meter offset SL, SMSL=1 -15 15 dB

22

Output impedance 400 Ω

13.8 TK Temp coeff. 0 ppm/K

Adjacent Channel Gain

13.9 G

13.10 G

max

Gain minimum ACG=0 32 dB

min

Gain maximum ACG=1 38 dB

Adjacent Channel Filter

13.11 f

13.12 f

13.13 f

HP

BP

-20dB

-3dB frequency highpass ACF=0 100 kHz

Centre frequency ACF=1 100 kHz

Attenuation 20dB 70 kHz

Adjacent Channel Output

13.14 V

13.15 V

Output voltage low 0.1 V

23

Output voltage high 4.9 V

23

11/75

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 12/75

Electrical specifications TDA7540B

Table 5. Electrical characteristics (continued)

(T

= 25°C, V

amb

f

= 98MHz, dev= 40kHz, f

RF

CC1

= V

CC2

= V

MOD

= V

CC3

= 1kHz, f

= V

CCST

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

13.16 R

OUT

Output resistance 4 kΩ

Multipath Channel Gain

13.17 G

13.18 G

max

Gain minimum MPG=0 12 dB

min

Gain maximum MPG=1 23 dB

Multipath Bandpass Filter

13.19 f

13.20 f

BP19

BP31

Centre frequency MPF=0 19 kHz

Centre frequency MPF=1 31 kHz

13.21 Q Quality factor 5 8 10

Multipath Output

13.22 V

13.23 V

13.24 R

OUT

Output voltage low 0.1 V

24

Output voltage high 4.9 V

24

Output resistance 2.5 kΩ

14 ISS (intelligent Selectivity System)

Filter 450kHz

14.1 f

centre

Centre frequency f

REF_intern

= 450kHz 450 kHz

14.2 BW 3dB Bandwidth, -3dB ISS80 = 1 80 kHz

14.3 BW 20dB Bandwidth, -20dB ISS80 = 1 150 kHz

14.4 BW 3dB Bandwidth, -3dB ISS80 = 0 120 kHz

14.5 BW 20dB Bandwidth, -20dB ISS80 = 0 250 kHz

14.6 BW 3dB Bandwidth weather band ISS30 = 1 30 kHz

14.7 BW 20dB -20dB weather band ISS30 = 1 80 kHz

Adjacent Channel ISS Filter Threshold

14.8 V

14.9 V

14.10 V

14.11 V

NTH

WTH

Internal low threshold ACNTH 0 V

Internal high threshold ACNTH 0.3 V

Internal low threshold ACWTH 0.25 V

Internal high threshold ACWTH 0.95 V

Multipath Threshold

14.12 V

14.13 V

THMP

Internal low threshold MPTH 0.50 V

Internal high threshold MPTH 1.25 V

ISS Filter Time Constant

14.14 I

14.15 I

14.16 I

27,I28

Charge current low mid TISS, ISSCTL = 1 -74 µA

Charge current high mid TISS, ISSCTL = 1 -60 µA

Charge current low narrow TISS, ISSCTL = 1 -124 µA

12/75

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 13/75

TDA7540B Electrical specifications

Table 5. Electrical characteristics (continued)

(T

= 25°C, V

amb

f

= 98MHz, dev= 40kHz, f

RF

CC1

= V

CC2

= V

MOD

= V

CC3

= 1kHz, f

= V

CCST

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

14.17 I

14.18 I

14.19 I

27,I28

Charge current high narrow

Discharge current low TISS, ISSCTL = 0 1 µA

Discharge current high TISS, ISSCTL = 0 15 µA

TISS, ISSCTL = 1 -110 µA

14.20 V27,V28Low voltage ISSCTL = 0 0.1 V

14.21 V

27,V28

High voltage ISSCTL = 1 4.9 V

ISS Filter Switch Threshold

14.22 V

27,V28

Threshold ISS on ISSCTL = 0 3 V

14.23 V27,V28Threshold ISS off ISSCTL = 0 1 V

14.24 V

14.25 V

27,V28

14.26 I

14.27 I

14.28 I

14.29 I

14.30 DEV

14.31 DEV

14.32 RATIO

14.33 RATIO

Threshold ISS narrow on ISSCTL = 0 4 V

Threshold ISS narrow off ISSCTL = 0 2 V

Charge current low TDEV -25 µA

3

Charge current high TDEV -39 µA

3

Discharge current low TDEV 1 µA

3

Discharge current high TDEV 15 µA

3

Internal low threshold DWTH 30 kHz

WTH

Internal high threshold DWTH 75 kHz

WTH

Referred to threshold DTH 1

min

Referred to threshold DTH 1.5

max

15 Softmute

15.1 V

15.2 V

15.3 a

15.4 a

15.5 a

15.6 V

15.7 a

15.8 I

15.9 I

ANT

SMmin

SMmax

SMTHISS

ACTH

SMAC

49

16 S/N MPX

16.1 (S+N)/N

Upper startpoint SMTH, SMD, SLOPE = 0 10 dBµV

lower startpoint SMTH, SMD, SLOPE = 0 3 dBµV

Min. softmute depth

Max. softmute depth

Mute depth threshold for ISS filter on

Internal AC mute threshold

SMD, SLOPE = 0, SMTH

Upper

SMD, SLOPE = 0, SMTH

Upper

18 dB

36 dB

SMCTH 0.2 1 2 dB

ACM 60 340 mV

AC mute depth ACMD 4 10 dB

Charge current -47.5 µA

Discharge current 2.5 µA

= 60dBµV,

V

ANT

dev.= 40kHz,LP=15KHz deemphasis t = 50

µs

66 69 dB

13/75

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 14/75

Electrical specifications TDA7540B

3.2.3 AM section

Table 6. Electrical Characteristics

(T

= 25°C, V

amb

= 98MHz, m= 30%, f

f

RF

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

17 Global

CC1

= V

CC2

MOD

= V

CC3

CCST

= 400kHz, f

= V

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

17.1 V

17.2

17.3 (S+N)/N Signal to Noise Ratio Ref.: V

17.4 a

17.5 f

17.6 THD Total Harmonic Distortion

17.7 V

17.8 V

17.9 V

17.10 V

17.11 V

17.12 |I

Usable sensitivity (S+N)/N = 26 dB 25 19 dBµV

ANT_us

∆V

AF

78max

IF2 AGC Range Ref.: V

ANT

IF rejection

IF

Frequency response

AF output level V

53

IF output level V

24

Min. RF AGC threshold

4

Max. RF AGC threshold

Min. IF AGC threshold

71

Max. IF AGC threshold

Min. DAGC threshold

71

Max. DAGC threshold

Ref: V IF = 10.7MHz

Ref.: V

∆V

AF

V

INRF

m = 0.3 V

INRF

m = 0.3

INRF

WAGC

DAGC

= 60dBµV, 50 52 dB

INRF

= 60dBµV5055 dB

INRF

= 60dBµV,

INRF

70 80 dB

= 60dBµV,

INRF

= -3 dB

= 60dBµV, m = 0 . 8

3.6 kHz

0.5

0.3

= 120 dBµV, m = 0 . 8

1.0

0.3

= 60dBµV 190 mV

= 60dBµ, m=off 190 mV

90

109

90

109

74 96

| AGC2 charge current seek 160 µA

17.13 CCR Charge current ratio seek/seek off 30

%

RMS

dBµV dBµV

18 AGC Voltage Driver Output

18.1 V

18.2 V

18.3 | I

Max. AGC output voltage 3.5 V

6

Min. AGC output voltage 0.5 V

6

| AGC current 100 µA

6

19 AGC PIN Diode Driver Output

19.1 I

AGC driver current -2 mA

7

20 AM Mixer1 (10.7MHz)

20.1 R

20.2 C

20.3 R

OUT

Input resistance differential 100 kΩ

IN

Input capacitance differential 4 pF

IN

Output impedance differential 100 kΩ

14/75

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 15/75

TDA7540B Electrical specifications

Table 6. Electrical Characteristics

(T

= 25°C, V

amb

f

= 98MHz, m= 30%, f

RF

CC1

= V

CC2

MOD

= V

CC3

CCST

= 400kHz, f

= V

CCVCO

= 10.25MHz, in application circuit, unless

Xtal

= V

CCMIX1

= V

CCMIX2

= V

CCIF1

= 8.5V,

otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

20.4 CP

1dB compression point referred to diff. mixer input 112 dBµV

1dB

20.5 IIP3 3rd order intermodulation 132 dB

20.6 F Noise figure 8 dB

20.7 A Gain 26 dB

20.8 C

20.9 C

20.10 C

min

max

1-80

Min. capacitance step IF1T 0.55 pF

Max. capacitance IF1T 8.25 pF

IF1T 2 pF

21 AM Mixer2 (450kHz)

21.1 R

21.2 C

21.3 CP

Input resistance 330 W

71

Input capacitance 2.5 pF

71

1dB compression point referred to diff. mixer input 120 dBµV

1dB

21.4 IIP3 3rd order intermodulation 132 dBµV

21.5 F Noise figure 12 dB

21.6 A Max. gain Mixer2 tank output 34 dB

21.7 ∆A Gain control range 20 dB

21.8 C

21.9 C

21.10 C

min

max

62-63

Min. cap step IF2T 1.6 pF

Max. cap IF2T 24 pF

IF2T 2 pF

22 IF Noise Blanking

µV

22.1 t

22.2 t

22.3 V

22.4 V

22.5 V

22.6 V

22.7 V

bl

th

thstep

desth

Min. blanking time 8 µs

Max. blanking time 17 µs

Min internal threshold 0 mV

Max. internal threshold 187.5 mV

Threshold step 12.5 mV

Min. desensitivity threshold 3.2 V

Max. desensitivity threshold 4 V

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 16/75

Electrical specifications TDA7540B

3.2.4 Stereodecoder

Table 7. Electrical characteristics

(T

= 25°C, V

amb

= 500mV

V

MPX

circuit, unless otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

23 Stereodecoder

= V

CC1

mono, f = 1kHz, deemphasis = 50µs, f

rms

CC2

= V

CC3

= V

CCST

= V

CCVCO

= V

CCMIX1

Xtal

= V

CCMIX2

= 10.25MHz, in application

= V

CCIF1

= 8.5V,

23.1 V

23.2 R

23.3 G

23.4 G

23.5 G

min

max

step

23.6 SVRR

23.7 a Max. channel separation

MPX input level STD Gain = 2,5 dB 0.5 0.93 V

in

Input resistance 100 kΩ

in

Min. Stereodecoder gain 0 dB

Max. Stereodecoder gain 3.75 dB

Stereodecoder gain step resolution

Supply voltage ripple rejection

Vripple = 100mV, f = 1kHz 60 dB

V

MPX

= 500mV

rms

stereo

only L/R

1.25 dB

50 dB

23.8 THD Total harmonic distortion 0.02 0.3 %

23.9 (S+N)/N

23.10 V

23.11 R

23.12 V

23.13 V

puafs

TH1

TH2

Signal plus Noise to Noise ratio

A-weighted, 19kHz notch 85 dB

Pull up voltage for AFS pin 3.3 V

Pull up resistor for AFS pin 25 kΩ

1. threshold for AFS PIN 2.4 V

2. threshold for AFS PIN 0.8 V

24 Mono/Stereo-switch

24.1 V

24.2 V

24.3 V

24.4 V

PTHST1

PTHST0

PTHMO1

PTHMO0

Pilot threshold voltage for Mono->Stereo, PTH = 1 10 mV

Pilot threshold voltage for Mono->Stereo, PTH = 0 14 mV

Pilot threshold voltage for Stereo->Mono, PTH = 1 8 mV

Pilot threshold voltage for Stereo->Mono, PTH = 0 12 mV

25 19kHz PLL

rms

25.1 f

lock

PLL lock range

Pilot magnitude 20 mV

rms

= 4%

18.9 19.1 kHz

25.2 DP Pilot deviation Pilot frequency 19kHz 4 30 %

26 Deemphasis- and highcut

26.1 t

26.2 t

HC50

HC75

Deemphasis time constant

DEEMP = 0, DESFT = 1 V

>> V

LEVEL

HCH

DEEMP = 1, DESFT = 1

>> V

V

LEVEL

HCH

50 µs

75 µs

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 17/75

TDA7540B Electrical specifications

Table 7. Electrical characteristics (continued)

(T V

amb

MPX

= 25°C, V = 500mV

= V

CC1

mono, f = 1kHz, deemphasis = 50µs, f

rms

CC2

= V

CC3

= V

CCST

= V

CCVCO

= V

CCMIX1

Xtal

= V

CCMIX2

= 10.25MHz, in application

= V

CCIF1

= 8.5V,

circuit, unless otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

26.3 t

26.4 t

26.5 t

26.6 t

26.7 F

26.8 F

HC25

HC37

HC50

HC75

AMCMin

Deemphasis time constant

Highcut time constant

Min. AM corner frequency

Max. AM corner frequency

DEEMP = 0, DESFT = 0 V

LEVEL

DEEMP = 1, DESFT = 0 V

LEVEL

DEEMP = 0, DESFT = 1 V

LEVEL

DEEMP= 1, DESFT = 1 V

LEVEL

DEEMP = 0, DESFT = 1 AMCF

27 Stereoblend- and highcut-control

27.1 L

27.2 L

27.3 L

Gmin

Gmax

Gstep

27.4 VSBL

27.5 VSBL

27.6 VSBL

27.7 VHCH

27.8 VHCH

27.9 VHCH

27.10 VHCL

27.11 VHCL

27.12 VHCL

Min. level gain LG 0 dB

Max. level gain LG 4.7 dB

Level gain step resolution LG 0.67 dB

Min. voltage for mono SBC 29 %V

min

Max. voltage for mono SBC 58 %V

max

Step resolution SBC 4.2 %V

step

Min. voltage for no highcut VHCH 42 %V

min

Max. Voltage for no highcut VHCH 66 %V

max

Step resolution VHCH 8 %V

step

Min. voltage for full high cut VHCL, MAXHC = 00 11 %VHCH

min

Max. voltage for full high cut VHCL, MAXHC = 00 33 %VHCH

max

Step resolution VHCL, MAXHC = 00 7.3 %VHCH

step

28 Carrier and harmonic suppression at the output

>> V

<< V

HCH

25 µs

37.5 µs

HCH

150 µs

HCL

225 µs

HCL

1.06 kHz

3.18 kHz

REF1

28.1 a19 Pilot signal f=19kHz V

pilot

= 50mV

rms

50 dB

28.2 a38 Subcarrier f=38kHz 75 dB

28.3 a57 Subcarrier f=57kHz 62 dB

28.4 a76 Subcarrier f=76kHz 90 dB

29 Intermodulation (Note 1)

29.1 a2 f

29.2 a3 f

=10kHz, f

mod

=13kHz, f

mod

=1kHz 65 dB

spur

=1kHz 75 dB

spur

17/75

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 18/75

Electrical specifications TDA7540B

Table 7. Electrical characteristics (continued)

(T V

amb

MPX

= 25°C, V = 500mV

= V

CC1

mono, f = 1kHz, deemphasis = 50µs, f

rms

CC2

= V

CC3

= V

CCST

= V

CCVCO

= V

CCMIX1

Xtal

= V

CCMIX2

= 10.25MHz, in application

= V

CCIF1

= 8.5V,

circuit, unless otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

30 Traffic Radio (Note 2)

30.1 a57 Signal f=57kHz 70 dB

31 SCA - Subsidiary Communications Authorization (Note 3)

31.1 a67 Signal f=67kHz 75 dB

32 ACI - Adjacent Channel Interference (Note 4)

32.1 a114 Signal f=114kHz 95 dB

32.2 a190 Signal f=190kHz 84 dB

33 FM noise blanker

33.1 V

33.2 V

33.3 V

33.4 V

33.5 V

33.6 V

33.7 V

33.8 V

33.9 V

33.10 V

33.11 V

TRMIN

TRMAX

TRSTEP

TRNOISE

PEAK

PEAKDEV

PEAKFS

Min. trigger threshold

Max. trigger threshold

Trigger threshold step

Min. noise controlled trigger threshold

Max. noise controlled trigger threshold

Peak voltage NBRR = 00, V

Peak voltage V

Min. deviation dependent peak voltage

Max. deviation dependent peak voltage

Min. fieldstrength controlled peak voltage

Max. fieldstrength

33.12 V

PEAKFS

controlled peak voltage

33.13 T

33.14 T

33.15 SR

PEAK

Min. blanking time

S

Max. blanking time

S

Noise rectifier charge

0)

V

=0.8V, NBLTH 147 mV

PEAK

0)

V

=0.8V, NBLTH 280 mV

PEAK

V

=1.5V, NBCTH 450 mV

PEAK

V

=1.5V, NBCTH 1200 mV

PEAK

=50mV, f=150kHz 1.9 V

MPX

=200mV, f=150kHz 3.5 V

MPX

V

=500mV, NBDTH = 11

MPX

V

=500mV, NBDTH= 00 2.0 V

MPX

V

=0mV, V

MPX

(fully mono), NBFS = 11

=0mV, V

V

MPX

(fully mono), NBFS = 00

Signal HOLDN in testmode, NBT

Signal PEAK in testmode, NBPC=0

19 mV

=0mV 0.8 V

MPX

0.8

(off)

LEVEL

<< V

SBL

0.8

(off)

<< V

LEVEL

SBL

2.0 V

22 µs

38 µs

10 mV/µs

OP

V

OP

V

33.16 SR

PEAK

Noise rectifier charge

Signal PEAK in testmode, NBPC=1

20 mV/µs

18/75

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 19/75

TDA7540B Electrical specifications

Table 7. Electrical characteristics (continued)

(T V

amb

MPX

= 25°C, V = 500mV

= V

CC1

mono, f = 1kHz, deemphasis = 50µs, f

rms

CC2

= V

CC3

= V

CCST

= V

CCVCO

= V

CCMIX1

Xtal

= V

CCMIX2

= 10.25MHz, in application

= V

CCIF1

= 8.5V,

circuit, unless otherwise specified).

Item Symbol Parameter Test Conditions Min. Typ. Max. Unit

33.17 V

33.18 V

33.19 V

33.20 V

33.21 V

RECTADJ

ADJMP

Noise rectifier discharge adjustment

Noise rectifier adjustment by multipath

Noise rectifier adjustment

33.22 V

ADJMP

by strong multipath influence

Noise rectifier adjustment

33.23 V

ADJMP

by multipath and strong multipath influence

33.24 G

AMdelay

AM delay filter attenuation f = 2.2kHz 2 dB

34 Multipath Detector

Signal PEAK in testmode, NBRR=00, NBSMP=0, MPPC=0

Signal PEAK in testmode, NBRR=01, NBSMP=0, MPPC=0

Signal PEAK in testmode, NBRR=10, NBSMP=0, MPPC=0

Signal PEAK in testmode, NBRR=11, NBSMP=0, MPPC=0

Signal PEAK in testmode,

=1V, NBSMP=0,

V

MPTC

MPPC=1

Signal PEAK in testmode, V

=1V,, NBSMP=1,

MPTC

MPPC=0

Signal PEAK in testmode, V

=1V,, NBSMP=1,

MPTC

MPPC=1

0.3 V/ms

0.8 V/ms

1.3 V/ms

2.0 V/ms

TBD V/ms

34.1 f

34.2 G

34.3 G

34.4 G

34.5 G

34.6 I

34.7 I

34.8 I

CMP

BPMP

RECTMP

CHMP

DISMP

Center frequency of multipath-bandpass

Min. band pass gain MPBPG 6 dB

Max. band pass gain MPBPG 12 dB

Min. rectifier gain MPRG 0 dB

Max. rectifier gain MPRG 7.6 dB

Rectifier charge current MPCC = 0 0.8 µA

Rectifier charge current MPCC = 1 0.4 µA

Rectifier discharge current 1 mA

stereo decoder locked on pilot tone

19 kHz

35 Quality detector

35.1 a Min. MP influence factor QDC 0.6

35.2 a Max. MP

influence factor QDC 1.05

35.3 A Min. noise influence factor QNG 6 dB

35.4 A Max. noise influence factor QNG 15 dB

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DOCUMENT CD00108485 REVISION 1.0 ACTIVE DATE 11-May-2006 page: 20/75

Electrical specifications TDA7540B

1. Intermodulation Suppression

a

2 = VO(signal,@1KHz) / VO(spurious, @1KHz) ; fs = (2x10KHz) - 19KHz

a

3 = VO(signal,@1KHz) / VO(spurious, @1KHz) ; fs = (3x13KHz) - 38KHz

measured with: 91% stereo signal; 9% pilot signal; fm = 10kHz or 13kHz.

2. Traffic Radio (V.F.) Suppression

57(V,W,F) = VO(signal,@1KHz) / VO(spurious, @1KHz+/-23KHz)

a

measured with: 91% stereo signal; 9% pilot signal; fm=1kHz; 5% sub carrier (f=57kHz, fm=23Hz AM, m=60%)

3. SCA ( Subsidiary Communications Authorization )

67 = VO(signal,@1KHz) / VO(spurious, @9KHz) ; fs = (2x38KHz) - 67KHz

a

measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA – sub carrier ( fS = 67kHz, unmodulated ).

4. ACI ( Adjacent Channel Interference )

a

114 = VO(signal,@1KHz) / VO(spurious, @4KHz) ; fs = 110KHz - (3x38KHz)

a

190 = VO(signal,@1KHz) / VO(spurious, @4KHz) ; fs = 186KHz - (5x38KHz)

measured with: 90% mono signal; 9% pilot signal; fm=1kHz; 1% spurious signal ( fS = 110kHz or 186kHz, unmodulated).

0

) All thresholds are measured inTestmode at the quality output. The thresholds are calculated by V

- V

NBTH

V

PEAK

is adjusted by applying a 150kHz sinewave at MPXIN.

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