參數(shù)資料
型號(hào): TDA7405TR
廠商: STMICROELECTRONICS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: 10 X 10 MM, ROHS COMPLIANT, TQFP-44
文件頁(yè)數(shù): 47/58頁(yè)
文件大小: 762K
代理商: TDA7405TR
51/57
TDA7405
Table 31. Noiseblanker II (24)
Table 32. AM / FM-Noiseblanker (25)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
1
PEAK charge current
low
high
0
1
1
0
1
0
1
Fieldstrength adjust
2.3V
1.8V
1.3V
OFF
0
1
1
0
1
0
1
Blank Time FM / AM
38s / 1.2ms
25.5s / 800s
32s / 1.0s
22s / 640s
0
1
1
0
1
0
1
Noise Rectifier Discharge Resistor
R = infinite
RDC = 56k
RDC = 33k
RDC = 18k
0
1
Strong Multipath influence on PEAK 18k
off
on (18k discharge if VMPout< 2.5V)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
1
Stereodecoder Mode
FM
AM
0
1
1
0
1
0
1
1
0
1
0
1
0
1
0
1
AM Rectifier Gain
6dB
8dB
10dB
12dB
14dB
16dB
18dB
20dB
0
1
1
0
1
0
1
Rectifier Cut-Off Frequency
14.0kHz
18.5kHz
28.0kHz
56.0kHz
0
1
Overdeviation Time Constant
on
off
0
1
AM Blank-Mode
High-Ohmic Mute
Sample&Hold
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