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TDA7405 数据表(PDF) 51 Page - STMicroelectronics

部件名 TDA7405
功能描述  EQUALIZER CARRADIO SIGNAL PROCESSOR
PDF  56 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7405 数据表(HTML) 51 Page - STMicroelectronics

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TDA7405
Table 27. Noiseblanker II (24)
Table 28. AM / FM-Noiseblanker (25)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
1
PEAK charge current
low
high
0
0
1
1
0
1
0
1
Fieldstrength adjust
2.3V
1.8V
1.3V
OFF
0
0
1
1
0
1
0
1
Blank Time FM / AM
38µs / 1.2ms
25.5µs / 800µs
32µs / 1.0s
22µs / 640µs
0
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
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
AM Rectifier Gain
6dB
8dB
10dB
12dB
14dB
16dB
18dB
20dB
0
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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