Telecom modules

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Fully featured trunk/COIC interface

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Ag2120 is a highly integrated trunk or PSTN/COIC interface, available in either a DIL or SIL package. The module boasts many integrated features, including a basic barrier on-chip and programmable DC mask.  The Ag2120 can be used in systems without a ground, or in applications where common mode interference is very high. It can also be operated from either a +3.3V or a +5V supply.




  • Highly featured PSTN interface
  • Includes Transformer isolation
  • On board Loop switch and Diode bridge
  • Ringing and loop current detection
  • Parallel phone detect
  • Programmable to meet different country standards
  • Tip/Ring polarity detect for CLI and on hook reception
  • 3V or 5V versions
  • Simple integration


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