Patent ID: 11909410
Assignee: STMICROELECTRONICS INTERNATIONAL N.V.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A method, comprising:
generating a quantization output signal;
generating a thermometer coded signal in response to the quantization output signal;
actuating unit current elements of a digital to analog converter (DAC) circuit in response to bits of the thermometer coded signal; and
estimating unit current element mismatch error in the digital to analog converter circuit by:
performing a first correlation between bits of a first signal derived from the thermometer coded signal and corresponding bits of a second signal derived from the quantization output signal;
performing a second correlation between all bits of the second signal; and
multiplying a result of the first correlation by a result of the second correlation to generate estimates of unit current element mismatch error.