M-980-02 3V/5V General Purpose Call Progress Tone Detector Features • Covers the 315 to 640 Hz range (common call progress) • Sensitivity to -38 dBm • Dynamic range over 38 dB • 40 ms minimum detect • 8-pin DIP or 16-pin SOIC • Single supply CMOS (low power) • Supply range 2.
8 to 5.
5 VDC • Inexpensive 3.
58 MHz time base • Low power consumption (_15 mW at 3V) Applications • Automatic dialers • Dialing modems • Traffic measurement equipment • Test equipment • Service evaluation • Billing systems Pin Diagram Description The M-980-02 is an integrated circuit tone detector for general purpose use in automatic following of switched telephone calls.
The circuit uses low-power CMOS techniques to pr...

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