Title :
A digital self-calibration method for pipeline A/D converters
Author :
Sumanen, Lauri ; Waltari, Mikko ; Korhonen, Tuomas ; Halonen, Kari
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
An area and power efficient digital self-calibration method for pipeline A/D converters is presented. The method compensates for errors related to MDAC´s capacitor mismatch, reference voltage inaccuracy, amplifier finite DC gain, and charge injection of the sampling switches by measuring the errors attached to each capacitor of an MDAC (multiplying DAC). From the measurements, carried out by the back-end ADC, correction coefficients are calculated. Simulations show more than 1.5-bit improvement in effective number of bits at 14-bit level
Keywords :
analogue-digital conversion; calibration; circuit simulation; error analysis; error compensation; pipeline processing; 14 bit; MDAC capacitor errors; MDAC capacitor mismatch errors; amplifier finite DC gain errors; area efficient digital self-calibration method; back-end ADC measurements; correction coefficients; digital self-calibration method; effective number of bits; error compensation; multiplying DAC; pipeline A/D converters; power efficient digital self-calibration method; reference voltage inaccuracy errors; sampling switch charge injection; simulations; Calibration; Capacitors; Computer architecture; Hardware; Linearity; Measurement units; Pipelines; Testing; Transfer functions; Voltage;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1011472
