CMX641A 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. The detection sensitivity, frequency and bandwidth are indepe.
CMX641A Key Features
- Two (12kHz/16kHz) SPM Detectors
- Selectable 12kHz/16kHz ASK Generator
- Selectable Tone Follower or Packet
- Excellent Speech-Band Rejection
- Hardwired Control for Non-µC Systems
- Selectable Bandwidth Limits and Stable
CMX641A Applications
- SPM for Pair-Gain Systems