First order memory-less dynamic element matching technique

A circuit, comprising:

• a crossbar switch matrix having switch inputs coupled to the input data bus to receive a thermometer coded data word and switch outputs configured to output an output data word that is a data weighted averaging (DWA) conversion of the thermometer coded data word;
• and
• a DWA control circuit configured to receive the output data word and generate from the output data word a multi-bit selection signal that is applied by a selection data bus to control inputs of the crossbar switch matrix;
• wherein the crossbar switch matrix is configured to operate in response to the multi-bit selection signal to selectively map the switch inputs to the switch outputs to effectuate the DWA conversion of the thermometer coded data word to output the output data word.

A method, comprising:

• converting a thermometer code signal to an output data weighted averaging signal in response to a selection signal;
• determining from all bits of a current output data weighted averaging signal an ending bit location within the current output data weighted averaging signal where an ending logic transition in the current output data weighted averaging signal occurs;
• and
• generating the selection signal to control said converting to select a beginning bit location where a beginning logic transition of a next output data weighted averaging signal is to occur.