參數(shù)資料
型號(hào): TDA7540NTR
廠商: STMICROELECTRONICS
元件分類: 調(diào)諧器
英文描述: 2-BAND, AUDIO TUNER, PQFP80
封裝: 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-80
文件頁數(shù): 51/76頁
文件大小: 1225K
代理商: TDA7540NTR
TDA7540N
Software specification
Addr 20 Tank Adjust
Table 30.
Addr 18 S-meter slider
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0000
S meter slider offset SL=0dB
0001
S meter offset SL=1dB
0010
S meter offset SL=2dB
-
---
-
1111
S meter offset SL=15dB
0
S meter offset -SL
1
S meter offset +SL
0
S Meter slope 1V/decade
1
S meter slope 1.5V/decade
0
Overdeviation correction current max=45A
1
Overdeviation correction current max=90A
0
Overdeviation correction “OFF”
1
Overdeviation correction “ON”
Table 31.
Addr 19 IF GAIN/XTAL adjust
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Xtal amplitude limitation disable
1
Xtal amplitude limitation enable
0
IF1 gain1 9dB
0
1
IF1 gain1 12dB
1
0
IF1 gain1 15dB
1
IF1 gain1 18dB
00000
CLoad 0pF
00001
CLoad 0.75pF
00010
CLoad 1.5pF
00011
CLoad 2.25pF
00100
CLoad 3pF
-----
-
11111
CLoad 23.25pF
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