MULTIPLE STRING DIGITAL TO ANALOG CONVERTER COMPRISING A CONTROL CIRCUIT

摘要

A multi-string DAC is described and comprises at least two DAC stages. Each DAC stage comprises a string of impedance elements and a switching network. A control loop is provided to control the Ron of the switching network and provide code dependent control of switches in a DAC switching network.

主权项

1. A multistage digital to analog converter, DAC, comprising a plurality of DAC stages, at least one of the DAC stages comprising a string comprising a plurality of impedance elements coupled to a switching network, the DAC further comprising a control circuit coupled to the switching network and configured to provide code dependent compensation for, or control of, variances in the response of the switching network.