A 63-μW 92.68-dB SNDR Sigma-Delta Modulator using Self-biased Inverter-based Amplifiers

被引：1
|
作者：
Dela Cruz, Vania Maria [1 ]
Silverio, Angelito [1 ]
机构：
[1] Univ Santo Tomas, Fac Engn, Manila, Philippines
来源：
2021 INTERNATIONAL SYMPOSIUM ON ELECTRICAL AND ELECTRONICS ENGINEERING (ISEE 2021) | 2021年
关键词：
sigma-delta modulator; inverter-based amplifier;
D O I：
10.1109/ISEE51682.2021.9418716
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents an inverter-based sigma-delta modulator for use in wearable devices. This work employs the use of power-efficient integrators using self-biased, fully differential inverters, allowing for the amplifier to compensate any fluctuation due to process, voltage, and temperature (PVT) variations. To verify the effectiveness of the amplifier, a second-order discrete-time sigma-delta modulator is implemented in 0.18 mu m CMOS technology. The modulator achieves a 92.68 dB SNDR and 93.47 dB SNR while consuming 63-mu W from a 1.8V supply, corresponding to a Walden's FOM of 89.96 fJ/step for a signal bandwidth of 10 kHz.
引用
收藏
页码：5 / 8
页数：4
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