Title :
On improving the linearity of DACs using TIAMPs
Author :
Chong, Chu Phoon ; Smith, Kenneth C. ; Vranesic, Zvonko G.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
Abstract :
Linearity of a D/A converter using TIAMPs is analyzed. Proof of the fact that DNL at the first-major carry is most sensitive to the gain error of the TIAMPs is given. Results of the linearity analysis lead to an optimum D/A converter configuration using non-identical cells. A TIAMP design with low closed-loop-gain error is described. Experimental results show that accuracy of the TIAMP DAC, limited by channel mismatches of the TIAMPs, has been increased to 11 bits
Keywords :
coding errors; digital-analogue conversion; linearisation techniques; D/A converter; DAC linearity improvement; TIAMPs; closed-loop-gain error; three input amplifiers; CMOS process; Differential equations; Libraries; Linearity; Silicon; Voltage;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176663
