Mismatch-shaping serial digital-to-analog converter

A simple but accurate pseudo-passive mismatch-shaping D/A converter is described. A digital state machine is used to control the switching sequence of a symmetric two-capacitor network that performs the D/A conversion. The error caused by capacitor mismatch is uncorrelated with the input signal and has only little power in the signal band. The system has been simulated assuming a 0.1% capacitor mismatch, and the achieved SNDR performance was 100 dB for an oversampling ratio of 7.

• Type: Conference
• Year: 1999
• Where: ISCAS
• Authors: Jesper Steensgaard, Un-Ku Moon, Gabor C. Temes
• Keywords: Capacitor Mismatch, D/A Conversion, Hardware, ISCAS 1999, Mismatch-shaping D/a Converter