← 返回 JSSC 论文列表JSSC 2023第6期Power Management0.18μm CMOS
A3 6 8a Frms Resolution Continuous-Time Bandpass Capacitance-to-Digital Conver
提出一种超高分辨率、高能效的连续时间带通电容-数字转换器。
3.68 aFrms分辨率，183 dB Schreier品质因数
电容-数字转换器连续时间带通ΔΣ调制超高分辨率低功耗
▸采用连续时间操作克服热噪声限制
▸使用带通ΔΣ调制器降低功耗
▸输入级采用电荷域数模转换器降低噪声
Abstract
This article describes a fourth-order continuous-
time (CT) bandpass (BP)- capacitance-to-digital converter
(CDC) for full-CMOS sensors having ultrahigh-resolution and
high-energy efficiency. To improve the resolution of CDC,
a CT instead of a discrete-time (DT) operation is employed
to overcome a thermal noise limitation. Moreover, a BP-
modulator is used to save power consumption compared to
lowpass (LP) or highpass (HP)- Ms. In addition, a charge-
domain digital-to-analog converter