DocumentCode :
3354192
Title :
A digital calibration for a 16-bit, 400-MHz current-steering DAC
Author :
Pirkkalaniemi, Jussi ; Kosunen, Marko ; Waltari, Mikko ; Halonen, Kari
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Finland
Volume :
1
fYear :
2004
fDate :
23-26 May 2004
Abstract :
A digital calibration for current-steering D/A converters is presented. The calibration corrects errors originating from mismatched thermometer decoded MSB current sources. The calibration principle is to measure the mismatches and skip over transfer function discontinuations. Four redundant MSB sources compensate the reduced input range cause by the skipping action. The mismatches are measured by using a simple comparator. Manners for extending the calibration range, thus enhancing linearity, are straightforward. Simulation show that the errors caused by the MSB sources are cancelled resulting in clear improvement in static linearity.
Keywords :
calibration; comparators (circuits); current-mode circuits; digital-analogue conversion; 16 bit; 400 MHz; comparator circuits; current sources; current-steering DAC; decoded MSB; digital calibration; linearity enhancements; mismatched thermometer; redundant MSB sources; static linearity; transfer function discontinuations; Calibration; Clocks; Control systems; Decoding; Electronic circuits; Error correction; Laboratories; Linearity; Silicon; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
Type :
conf
DOI :
10.1109/ISCAS.2004.1328190
Filename :
1328190
Link To Document :
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