TY - GEN
T1 - Design strategy for enhanced output impedance current-steering DAC in sigma-delta converters
AU - Irfansyah, Astria Nur
AU - Lehmann, Torsten
AU - Jenkins, Julian
AU - Hamilton, Tara Julia
PY - 2013
Y1 - 2013
N2 - This paper analyses the design trade-off of a high-output impedance current mirror structure used as a current-steering DAC in a sigma-delta modulation DAC with dynamic element matching. The aim is to provide a design strategy with transistor sizing guidelines leading to the achievement of high static linearity and high accuracy given specific accuracy, load resistance, and voltage swing requirement. Challenging factors limiting the circuit static linearity are described and shown. A test chip implemented in 180nm CMOS process has been designed and fabricated, with simulated results showing static linearity of a 16-bit DAC has been achieved.
AB - This paper analyses the design trade-off of a high-output impedance current mirror structure used as a current-steering DAC in a sigma-delta modulation DAC with dynamic element matching. The aim is to provide a design strategy with transistor sizing guidelines leading to the achievement of high static linearity and high accuracy given specific accuracy, load resistance, and voltage swing requirement. Challenging factors limiting the circuit static linearity are described and shown. A test chip implemented in 180nm CMOS process has been designed and fabricated, with simulated results showing static linearity of a 16-bit DAC has been achieved.
UR - http://www.scopus.com/inward/record.url?scp=84893167365&partnerID=8YFLogxK
U2 - 10.1109/MWSCAS.2013.6674642
DO - 10.1109/MWSCAS.2013.6674642
M3 - Conference contribution
AN - SCOPUS:84893167365
SN - 9781479900664
T3 - Midwest Symposium on Circuits and Systems
SP - 289
EP - 292
BT - 2013 IEEE 56th International Midwest Symposium on Circuits and Systems, MWSCAS 2013
T2 - 2013 IEEE 56th International Midwest Symposium on Circuits and Systems, MWSCAS 2013
Y2 - 4 August 2013 through 7 August 2013
ER -