Title :
A new offset cancellation technique for folding ADC
Author :
Movahedian, Hamid ; Bakhtiar, Mehrdad Sharif
Author_Institution :
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
Abstract :
In this paper, a new method for automatic cancellation of mismatch-induced errors in folding ADC is introduced. Using "trimmable MOSFET" for input transistors, this method results in considerable reduction of the size of speed-determining transistors while keeping integral nonlinearity (INL) arbitrarily low. Using this technique, an 8-bit folding ADC is re-designed and its performance is compared to the original work.
Keywords :
MOS integrated circuits; MOSFET; analogue-digital conversion; automatic cancellation; folding ADC; input transistors; integral nonlinearity; mismatch-induced errors; offset cancellation; speed-determining transistors; trimmable MOSFET; Analog-digital conversion; Calibration; Circuits; Current measurement; Differential amplifiers; Frequency; MOSFETs; Preamplifiers; Signal sampling; Voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1464559
