ta31273fn TOSHIBA Semiconductor CORPORATION, ta31273fn Datasheet - Page 6

• Manufacturer Part Number: ta31273fn
• Description: Am Rf/if Detector Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

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.
When the filter constants shown below are used, it is not necessary to set the R9 constant value.
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.
When the filter constants shown below are used, it is not necessary to set the R10 constant value.
(The bit rate filter time constant takes into account the internal resistance RSSI (20 kΩ).)
(The bit rate filter time constant takes into account the internal resistance RSSI (20 kΩ).)
1200 bps
2400 bps
4800 bps
1200 bps
2400 bps
4800 bps
1200 bps
2400 bps
4800 bps
1200 bps
2400 bps
4800 bps
47 kΩ
47 kΩ
47 kΩ
R10
R10



47 kΩ
47 kΩ
47 kΩ
68 kΩ
68 kΩ
68 kΩ
20 kΩ
20 kΩ
20 kΩ
R9
R9
R9
R9



Quadratic filter (NRZ)
Quadratic filter (NRZ)
68 kΩ
68 kΩ
68 kΩ
20 kΩ
20 kΩ
20 kΩ
68 kΩ
68 kΩ
68 kΩ
20 kΩ
20 kΩ
20 kΩ
6
R8
R8
R8
R8
1500 pF
2200 pF
1500 pF
3300 pF
1500 pF
8200 pF
3900 pF
1800 pF
680 pF
390 pF
680 pF
820 pF
C14
C14
C16
C16
4700 pF
2200 pF
1000 pF
2200 pF
1000 pF
560 pF
270 pF
150 pF
470 pF
6800 pF
3300 pF
1800 pF
C13
C13
C14
C14
0.033 µF
0.015 µF
4700 pF
2200 pF
6800 pF
0.01 µF
C13
C13
TA31273FN
2002-07-08