TY - GEN
T1 - A low power audio delta-sigma modulator with opamp-shared and opamp-switched techniques
AU - Wang, Hanqing
AU - Xu, Jian
AU - Wu, Xiaobo
PY - 2010/12/1
Y1 - 2010/12/1
N2 - A high power efficient opamp-shared and opamp-switched delta-sigma modulator (DSM) has been presented. It employs a fourth-order single loop 17-level DSM with an input feed forward gain stage. It is shown that power consumption can be largely reduced by using half delay integrators and switched opamp, and sharing opamp between integrator stages. The proposed DSM, designed on 0.35μm TSMC process under 1.8V supply, achieves 121μW power dissipation with 20 kHz bandwidth and 111.9dB Signal-to-Quantization Noise Ratio (SQNR).
AB - A high power efficient opamp-shared and opamp-switched delta-sigma modulator (DSM) has been presented. It employs a fourth-order single loop 17-level DSM with an input feed forward gain stage. It is shown that power consumption can be largely reduced by using half delay integrators and switched opamp, and sharing opamp between integrator stages. The proposed DSM, designed on 0.35μm TSMC process under 1.8V supply, achieves 121μW power dissipation with 20 kHz bandwidth and 111.9dB Signal-to-Quantization Noise Ratio (SQNR).
KW - Delta-sigma modulator (DSM)
KW - Opamp shared technique
KW - Switch capacitor (SC) circuit
KW - Switched opamp technique
UR - http://www.scopus.com/inward/record.url?scp=79952426034&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952426034&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79952426034
SN - 9789881701282
T3 - Proceedings of the International MultiConference of Engineers and Computer Scientists 2010, IMECS 2010
SP - 1296
EP - 1300
BT - Proceedings of the International MultiConference of Engineers and Computer Scientists 2010, IMECS 2010
T2 - International MultiConference of Engineers and Computer Scientists 2010, IMECS 2010
Y2 - 17 March 2010 through 19 March 2010
ER -