Part Number
|
AF121 |
Manufacturer
|
National Semiconductor |
Description
|
DTMF Bandpass Filters |
Published
|
Sep 25, 2017 |
Detailed Description
|
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Datasheet
|
AF121 PDF File
|
Overview
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These filters are compatible with tone detector circuits such as the Rockwell CRC8030 and the Mostek MK5102 DTMF digital receivers.
The filters provide 40 dB separation between the high and low frequency signaling groups and the dial tone frequencies.
The bandpass feature eliminates the need for a separate 'dial tone reject filter_
Features
• Compatible with Rockwell CRC8030 and Mostek
MK5102
• Gain
o±0.
5 dB
• Ripple
2 dB peak to peak
• Input Im...
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