DTMF Bandpass Filters
Description
.
~,.
.
LL
~National
,.
.
D
Semiconductor
.
C,.
\I.
LL
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 Impedance
175 kn min
• Power Supply
±5V to ±18V
Connection Diagram
Dual-In-Line Package
INPUT
VTOP VIEW
GND
Unspecified pins are for internal use only and should not be used for external connection.
Order Number AF121-1CJ, AF121-2CJ AF122-1CJ, AF122-2CJ
14-40
Absolute Maximum Ra...
Similar Datasheet
