TDA7514 Просмотр технического описания (PDF) - STMicroelectronics

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TDA7514

SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

STMicroelectronics 

TDA7514

Table 3. (continued)

Symbol

Parameter

Test Condition

Min Typ Max Unit

SoftMute by Adjacent Channel Detector

Vthsmac1 Threshold level1

T14<2>=0

2.75

V

Vthsmac2 Threshold level2

T14<2>=1

3.25

V

Attsmac1 Attenuation1

T14<7:6>=00

0

dB

Attsmac2 Attenuation2

T14<7:6>=01

6

dB

Attsmac3 Attenuation3

T14<7:6>=10

9

dB

Attsmac4 Attenuation4

T14<7:6>=11

12

dB

Station Detector by Smeter

VSDl

Low output level

@SDpin

0

V

VSDh

High output level

@SDpin

5

V

Vthsdmin Threshold level minimum

T20<3:0>=0000

0.4

V

Vthsdmax Threshold level maximum

T20<3:0>=1111

3.4

V

Vthsdstep Threshold level step

0.2

V

Adjacent Channel Detector for Quality outputs, SNC and HCC

F1ac1

Cutoff or center frequency of

filter1

T8<4>=0

83

kHz

F1ac2

Cutoff or center frequency of

filter1

T8<4>=1

104

kHz

F2ac1

Cutoff or center frequency of

filter2

T8<5>=0

119

kHz

F2ac2

Cutoff or center frequency of

filter2

T8<5>=1

139

kHz

GcF2ac1 Gain of filter2

T18<7>=0

8.7

dB

GcF2ac2 Gain of filter2

T18<7>=1

14.7

dB

∆Vrect1

∆Vrect2

Offset1 of rectifier for

SNC&HCC

Offset2 of rectifier for

SNC&HCC

T18<5:4>=00

T18<5:4>=01

0.4

V

0.8

V

∆Vrect3

Offset3 of rectifier for

SNC&HCC

T18<5:4>=10

1.2

V

∆Vrect4

Offset4 of rectifier for

SNC&HCC

T18<5:4>=11

1.6

V

Multipath Detector for Quality output, SNC and HCC (Filter shared with ISS multipath detector)

Gvrectl

Rectifier Gain minimum

T15<7:5>=000

5

dB

Gvrecth Rectifier Gain maximum

T15<7:5>=111

13.4

dB

Gvrectstep Rectifier Gain step

1.2

dB

11/74

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