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Sense and Control Products
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CPC5712: Voltage Monitor with Detectors (TOP)
  • Two Independent Programmable Level Detectors with Programmable Hysteresis
  • Fixed-Level Polarity Detector with Hysteresis
  • Differential Linear Output
  • Worldwide telephone network compatibility
  • Single Supply Operation, 3.0V to 5.5V
  • Minimum External Components
CPC5712 Block Diagram

CPC5712 (Data Sheet)

The CPC5712 is a special purpose Voltage Monitor with Detectors integrated circuit that is used in various high-voltage telephony applications such as VoIP gateways and IP-PBXs. The device monitors the TIP/RING potential through a high-impedance divider (resistor isolation) to derive two programmable signal level detects, polarity information, and a scaled representation of the phone line voltages. In use, the resistor divider and the high input impedance of the CPC5712 make the circuit practically undetectable on the line.

CPC5710: Phone Line Monitor (PLM) IC (TOP)
  • Worldwide telephone network compatibility
  • 3.3V or 5V operation
  • Full-wave ringing level detector comparator with internal threshold, large hysteresis, and logic-level output
  • High differential input impedance
  • Very low common-mode input impedance
CPC5710 Block Diagram

CPC5710 (Data Sheet)

The CPC5710N is a selectable dual function CMOS special purpose integrated high-impedance input, fixed-gain amplifier and an internally set voltage level comparator for telephone line monitoring. The high (>40dB) common-mode rejection ratio makes the CPC5710N an excellent choice for signaling detection, line condition monitoring, discrete voice recording and CID buffering applications. In addition to voice applications, the CPC5710N is ideal for data applications such as embedded modem designs utilized in broadband set-top boxes.

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