← 返回 JSSC 论文列表JSSC 2022第2期Other65nm
Design of Sub-10- μW Sub-01 THD Sinusoidal Current Generator IC for Bio-Impedanc
一款用于生物阻抗传感的超低功耗、低失真正弦电流发生器IC
65nm CMOS, 0.5V, 2μApp@20kHz, 6.2μW, THD<0.088%
生物阻抗传感正弦电流发生器低功耗低失真ΣΔ调制
▸采用数字ΣΔ调制简化正弦波查找表实现
▸引入半周期复位方案抑制噪声
▸0.5V低电压供电实现高效能
Abstract
This article presents a low-power, low-distortion,
and compact mixed-signal sinusoidal current generator (CG)
IC for bio-impedance (Bio-Z) sensing applications. By utilizing
the digital modulation to bridge the digitally synthesized
sinewave data and the analog-domain voltage output, imple-
mentation of a low-distortion sinewave lookup table (LUT) is
significantly simplified. Not only does this approach lead to the
reduced number of routing wires, pin allocation, and output
registers after logi