Title :
Mismatch-shaping serial digital-to-analog converter
Author :
Steensgaard, Jesper ; Moon, Un-Ku ; Temes, Gabor C.
Author_Institution :
Dept. of Inf. Technol., Tech. Univ., Lyngby, Denmark
Abstract :
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
Keywords :
digital-analogue conversion; error analysis; switched capacitor networks; D/A converter; capacitor mismatch error; digital state machine; digital-to-analog converter; mismatch-shaping serial DAC; oversampling ratio; pseudo-passive mismatch-shaping; switching sequence control; symmetric two-capacitor network; Analog-digital integrated circuits; Capacitors; Clocks; Digital-analog conversion; Error correction; Harmonic analysis; Linearity; Moon; Performance analysis; Voltage;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780472
