TDA7421N Datasheet, PDF (33/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS

TDA7421N
7.7 FRONT END ADJUSTMENT (subaddress 05H)
MSB
LSB
FUNCTION
ANA3 ANA2 ANA1 ANA0 RFA3 RFA2 RFA1 RFA0
ANT
ANT
ANT
ANT
RF
RF
RF
RF Voffset RF varicap / VPLL
adjustm ± adjustm adjustm adjustm adjustm ± adjustm adjustm adjustm
MSB
LSB
MSB
LSB
X
0
0
00
0
0
0
1 -3.6%
0
0
1
0 -7.2%
0
1
0
0 -14.3%
0
1
1
1 -25%
1
0
0
1 3.6%
1
0
1
0 7.2%
1
1
0
0 14.3%
1
1
1
1 25%
all combinations allowed
Voffset antenna varicap / VPLL
X
0
0
0
0
0
0
0
1
-3.6%
0
0
1
0
-7.2%
0
1
0
0
-14.3%
0
1
1
1
-25%
1
0
0
1
3.6%
1
0
1
0
7.2%
1
1
0
0
14.3%
1
1
1
1
25%
all combinations allowed
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