(China (Mainland))
Product Summary
The CMX631AP3 is a low-power, system-selectable Subscriber Pulse Metering (SPM) detector. The CMX631AP3 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 component adjustable to the user’s national ‘Must/Must-Not Decode’ specifications via an on-chip input amplifier. The 12kHz and 16kHz frequency limits are accurately defined by the use of an external 3.579545MHz telephone-system Xtal or clock-pulse input.
Parametrics
CMX631AP3 absolute maximum ratings: (1)Supply Voltage (VDD-VSS) -0.3 to 7.0 V; (2)Voltage on any pin to VSS -0.3 to (VDD + 0.3) V; (3)Current into VDD -30 to 30mA; (4)Current into VSS -30 to 30mA; (5)Current into Any other pin -20 to 20mA; (6)Total allowable device dissipation at TAMB 25℃: 800mW; (7)Derating above TAMB 25℃: 13 mW/℃; (8)Operating Temperature: -40 to 85℃; (9)Storage Temperature: -40 to 85℃.
Features
CMX631AP3 features: (1)Detects 12kHz or 16kHz SPM Frequencies; (2)Tone Follower and Packet Mode Outputs; (3)High Speech-Band Rejection Properties; (4)Low Power Operation (2.7V＜0.8mA); (5)Call Charge Applications on PABX Line Cards; (6)Complex and/or Simple Telephone Systems; (7)Remote Telephone/Payphones.
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