TDA7407 datasheet(20/46 Pages) STMICROELECTRONICS

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Multipath detector

TDA7407

20/46

Multipath detector

●

Internal 19kHz band pass filter

●

Programmable band pass and rectifier gain

●

two pin solution fully independent usable for external programming

●

selectable internal influence on Stereoblend

Table 8.

Multipath electrical characteristics

Symbol

Parameter

Test condition

Min. Typ. Max. Unit

fCMP

Center frequency of

multipath-bandpass

stereo decoder locked on pilot tone

KHz

GBPMP

Bandpass gain

bits D2, D1 configuration byte = 00

bits D2, D1 configuration byte = 10

bits D2, D1 configuration byte = 01

bits D2, D1 configuration byte = 11

GRECTMP Rectifier gain

bits D7, D6 configuration byte = 00

7.6

bits D7, D6 configuration byte = 01

4.6

bits D7, D6 configuration byte = 10

bits D7, D6 configuration byte = 11

off

ICHMP

Rectifier charge current

bit D5 configuration byte = 0

0.5

μA

bit D5 configuration byte = 1

1.0

μA

IDISMP

Rectifier discharge current

0.5

1.5

Table 9.

Quality detector

Symbol

Parameter

Test Condition

Min. Typ. Max. Unit

Multipath Influence factor

Addr. 12 / Bit 5+6

0.7

0.85

1.00

1.15

Noise influence factor

Addr. 16 / Bit 1+2

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