TDA7540B datasheet(11/75 Pages) STMICROELECTRONICS

部件名	TDA7540B

功能描述	AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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TDA7540B

Electrical specifications

11/75

10.3

V65

Limiting sensitivity

S/N = 20dB

28

dB

µV

10.4

G

Mixer gain

18

dB

11

Limiter 1 (450kHz)

11.1

GLimiter

Gain

80

dB

12

Demodulator, Audio Output

12.1

THD

Dev.= 75kHz, V65=

10mVRMS

0.1

%

12.2

VMPX

MPX output signal

Dev.= 75kHz

500

mVRMS

12.3

ROUT

Output impedance

50

Ω

12.4

|

∆V|

min

DC offset fine adjust

DEM, MENA=1

8.5

mV

12.5

|

∆V|

max

DC offset fine adjust

DEM, MENA=1

264

mV

12.6

S/N

Dev.= 40kHz,V65 =

10mVRMS

76

dB

12.7

VMPXW

MPXW output signal

Dev.= 75kHz

350

mVRMS

13

Quality Detection

S-meter, Unweighted Fieldstrength

13.1

V65

Min. input voltage MIX2

30

dB

µV

13.2

V22

Fieldstrength output

V65 = 20dBµV0.1

V

13.3

V22

Fieldstrength output

V65 = 119dBµV4.9

V

13.4

∆V

22

voltage per decade

SMSL = 0

1

V

13.5

∆V

22

voltage per decade

SMSL = 1

1.5

V

13.6

∆V

22

S-meter offset

SL, SMSL=1

-15

15

dB

13.7

ROUT

Output impedance

400

Ω

13.8

TK

Temp coeff.

0

ppm/K

Adjacent Channel Gain

13.9

Gmin

Gain minimum

ACG=0

32

dB

13.10

Gmax

Gain maximum

ACG=1

38

dB

Adjacent Channel Filter

13.11

fHP

-3dB frequency highpass

ACF=0

100

kHz

13.12

fBP

Centre frequency

ACF=1

100

kHz

13.13

f-20dB

Attenuation 20dB

70

kHz

Adjacent Channel Output

13.14

V23

Output voltage low

0.1

V

13.15

V23

Output voltage high

4.9

V

Table 5.

Electrical characteristics (continued)

(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,

fRF = 98MHz, dev= 40kHz, fMOD = 1kHz, fXtal = 10.25MHz, in application circuit, unless

otherwise specified).

Item

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

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