Kentaro Yoshioka, Yosuke Toyama, Teruo Jyo, and Hiroki Ishikuro "A Voltage Scaling .8 V Delta-Sigma Modulator with Inverter-Opamp Self-configuring Amplifier," at 2013 IEEE International Symposium on Circuits and Systems (ISCAS 2013), Beijing, China, May. 21, 2013.