參數(shù)資料
型號: TDA7421N
廠商: STMICROELECTRONICS
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封裝: TQFP-64
文件頁數(shù): 35/47頁
文件大?。?/td> 374K
代理商: TDA7421N
Data byte specification
TDA7421N
Table 30.
IFT1/IFT2 (subaddress 04H)
MSB
LSB
Function
T2A3
T2A2
T2A1
T2A0
T1A3
T1A2
T1A1
T1A0
IF T2
adjust
MSB
IF T2
adjust
IF T2
adjust
IF T2
adjust
LSB
IF T1
adjust
MSB
IF T1
adjust
IF T1
adjust
IF T1
adjust
LSB
Adjustment capacitor
00
15Cift1
01
11
8Cift1
10
4Cift1
11
01
2Cift1
1
0
Cift2 (= 380 pF)
11
0
all combinations allowed
00
0
1
Cift1 (= 1.57 pF)
00
10
2Cift2
01
00
4Cift2
10
00
8Cift2
11
15Cift2
all combinations allowed
Table 31.
Front-end adjustment (subaddress 05H)
MSB
LSB
Function
ANA3
ANA2
ANA1
ANA0
RFA3
RFA2
RFA1
RFA0
ANT
adjustm
±
ANT
adjustm
MSB
ANT
adjustm
ANT
adjustm
LSB
RF
adjustm
±
RF
adjustm
MSB
RF
adjustm
RF
adjustm
LSB
Voffset RF varicap / VPLL
X0
0
00
01
-3.6 %
00
10
-7.2 %
0
1
0
-14.3 %
01
11
-25 %
10
01
3.6 %
10
7.2 %
11
00
14.3 %
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