參數(shù)資料
型號: TA31273FN
廠商: Toshiba Corporation
英文描述: AM RF/IF Detector IC
中文描述: 上午射頻/中頻檢測器IC
文件頁數(shù): 6/14頁
文件大?。?/td> 198K
代理商: TA31273FN
TA31273FN
2002-07-08
6
11. Bit rate filter for AM
The current AM bit rate filter is used as a quadratic filter.
If the filter is to be used at a rate other than 1200 bps, please change the filter constant.
Quadratic filter (NRZ)
(The bit rate filter time constant takes into account the internal resistance RSSI (20 k
).)
R9
R8
C14
C13
1200 bps
47 k
68 k
1500 pF
4700 pF
2400 bps
47 k
68 k
680 pF
2200 pF
4800 bps
47 k
68 k
390 pF
1000 pF
When the filter constants shown below are used, it is not necessary to set the R9 constant value.
R9
R8
C14
C13
1200 bps
20 k
2200 pF
6800 pF
2400 bps
20 k
1500 pF
3300 pF
4800 bps
20 k
820 pF
1800 pF
In addition, the current AM bit rate filter can be used as a tertiary filter.
If the filter is to be used at a rate other than 1200 bps, please change the filter constant.
Quadratic filter (NRZ)
(The bit rate filter time constant takes into account the internal resistance RSSI (20 k
).)
R10
R9
R8
C16
C14
C13
1200 bps
47 k
68 k
68 k
3300 pF
560 pF
0.01
μ
F
2400 bps
47 k
68 k
68 k
1500 pF
270 pF
4700 pF
4800 bps
47 k
68 k
68 k
680 pF
150 pF
2200 pF
When the filter constants shown below are used, it is not necessary to set the R10 constant value.
R10
R9
R8
C16
C14
C13
1200 bps
20 k
20 k
8200 pF
2200 pF
0.033
μ
F
2400 bps
20 k
20 k
3900 pF
1000 pF
0.015
μ
F
4800 bps
20 k
20 k
1800 pF
470 pF
6800 pF
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