Description
The CMX641A is a low power, system selectable Dual Subscriber Pulse Metering (SPM) Detector
two detectors on a single chip
to indicate the presence on a telephone line of either 12kHz or 16kHz telephone call charge frequencies.
Features
- Two (12kHz/16kHz) SPM Detectors.
- Selectable 12kHz/16kHz ASK Generator.
- Selectable Tone Follower or Packet
Mode 3-State Outputs.
- Excellent Speech-Band Rejection.
- Hardwired Control for Non-µC Systems.
- Selectable Bandwidth Limits and Stable
Centre Frequency from a Standard Xtal.
CMX641A Datasheet
