Ag2120 - Fully featured trunk/COIC interface

  • Product Info
  • Documents
  • Features
  • Evaluation Board


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. Ag2120 - SIL or DIL PSTN, COIC, DAA or Trunk Interface 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.





Ag2120 Datasheet

Ag2120 Shortform


Part Number Description Package
Ag2120S Programmable single channel trunk/PSTN interface SIL Buy now from the web Contact us for volume pricing
Ag2120D Programmable single channel trunk/PSTN interface DIL Buy now from the web Contact us for volume pricing


  • 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

Evaluation Boards

Evaluation Board Ag2120

Order Code: EVALAg2120

This evaluation board is suitable for use with all variants of the Ag2120. It can be used on its own or it can be connected to an Ag117x evaluation board.



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