Title :
A low current consumption delta-sigma modulator for body-implanted chip
Author :
Kiyoyama, K. ; Tanaka, Y. ; Onoda, M.
Author_Institution :
Nagasaki Inst. of Appl. Sci.
Abstract :
This paper presents a very low current consumption CMOS delta-sigma (DeltaSigma) modulator with the aim of use for medical application, which takes advantage of low gate-source voltage by operating in the sub-threshold region. It is based on the switched-opamp (SOP) technique, which allows low voltage operation with a standard CMOS process. Single-ended SOP topology is adopted for the design to reduce the chip area. The DeltaSigma modulator has been designed using 0.35mum standard CMOS technology. Even though using the single-ended SOP, 72dB dynamic range and 2.2muA current consumption have been achieved for the DeltaSigma modulator
Keywords :
CMOS integrated circuits; biomedical electronics; delta-sigma modulation; low-power electronics; operational amplifiers; prosthetics; 0.35 micron; 2.2 muA; CMOS technology; body-implanted chip; delta-sigma modulator; low voltage operation; single-ended SOP topology; switched-opamp technique; Degradation; Delta modulation; Digital modulation; Electrocardiography; Energy consumption; Pulse width modulation; Sampling methods; Semiconductor device measurement; Sensor systems; Voltage;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693695
