CMX631A Datasheet | Consumer Microcircuits Limited

.. Low Voltage SPM Detector D/631A/1 May 1998 Provisional Information Features and Applications - Detects 12kHz or 16kHz SPM Frequencies - Tone Follower and Packet Mode Outputs - High Speech-Band Rejection Properties - Low Power Operation (2.7V <0.8mA) - Call Charge Applications on PABX Line Cards - plex and/or Simple Telephone Systems - Remote Telephone/Payphones Brief Description The CMX631A is a low-power, system-selectable Subscriber Pulse Metering (SPM) detector that indicates the presence of either 12kHz or 16kHz telephone call-charge frequencies on a telephone line. Deriving its input directly from the telephone line, input amplitude/sensitivities are...