TDA7514 datasheet(9/74 Pages) STMICROELECTRONICS

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TDA7514

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Vthacstep

Threshold for weak adjacent

step

100

∆ACl

Differential Vthreshold between

weak and strong adjacent low

0mV

∆ACh

Differential Vthreshold between

weak and strong adjacent high

300

∆ACstep

Differential Vthreshold between

weak and strong step

100

ACdesen1

Desens Th1

Vsmeter at starting desens

0.25

ACdesen2

Desens Th2

Vsmeter at starting desens

0.83

ACdesen3

Desens Th3

Vsmeter at starting desens

1.42

ACdesen4

Desens Th4

Vsmeter at starting desens

2.0

Slop1

∆AC/∆Vsmeter1

T22<6:5>=00

-2.7

Slop2

∆AC/∆Vsmeter2

T22<6:5>=01

-3.3

Slop3

∆AC/∆Vsmeter3

T22<6:5>=10

-5

Slop4

∆AC/∆Vsmeter4

T22<6:5>=11

-10

Multipath Channel detector for ISS ( input: Smeter unfiltered+Buffer)

FcenterMP

BPF center

kHz

Qmp

Quality factor of BPF

8.5

FiltGv1

Gain1 of BPF

T25<1:0>=00

-7

FiltGv2

Gain2 of BPF

T25<1:0>=01

FiltGv3

Gain3 of BPF

T25<1:0>=10

FiltGv4

Gain4 of BPF

T25<1:0>=11

Grect1

Rectifier Gain1

T25<3:2>=00

Grect2

Rectifier Gain2

T25<3:2>=01

Grect3

Rectifier Gain3

T25<3:2>=10

Grect4

Rectifier Gain4

T25<3:2>=11

Vmpl

Output voltage low

3.0

Vmph

Output voltage high

4.9

Vthmp1

Threshold level1

3.49

Vthmp2

Threshold level2

3.74

Vthmp3

Threshold level3

4.06

Vthmp4

Threshold level4

4.31

Deviation detector for ISS (input: Demodulator output)

FcDev

Cutoff Frequency of MPX LPF

(2nd order)

kHz

Table 3. (continued)

TDA7514 Datasheet(PDF) 9 Page - STMicroelectronics

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