73M1x22/73M1x66B MicroDAA DC Control Loop Operation

By: Jeff Sorensen

Abstract: This white paper provides additional information on the MicroDAA® DC control loop as it is implemented in Teridian's 73M1822, 73M1922, 73M1866B, and 73M1966B devices. The loop controls the DC voltage/current ratio so that the data access arrangement (DAA) function presents an approximately 50Ω load in series with a fixed-DC voltage bias. This, in turn, provides the necessary tip/ring voltage.

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APP 4886:
APPLICATION NOTE 4886,AN4886, AN 4886, APP4886, Appnote4886, Appnote 4886