⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种采用浮置反相放大器（FIA）和动态体偏置辅助的相关电平转换（CLS）技术的2-0 MASH模数转换器（ADC），在1kHz带宽内实现了94.0dB的SNDR，功耗仅2.87µW。该设计解决了传统MASH结构中因积分器增益不足导致的量化噪声泄漏问题，实现了高精度低功耗的噪声整形。
Peking University, Beijing, China 1 2 Micro-power ∆Σ modulators are suitable for low-bandwidth, high-precision applications, such as smart sensors, biomedical signal processing and battery-powered IoT devices. They achieve high SNR by oversampling and noise shaping, but higher order loops have stability problems. The multistage noise-shaping (MASH) technique solves this problem by realizing a high-order NTF with several low-order stages. However, for the MASH structure to be effective, the loop filter integrators must have high gain to avoid quantization noise leakage. Conventionally, they are realized by high-gain OTAs with gainboosted cascode [1]. However, they draw static bias current, and their biasing and common mode feedback (CMFB) make them unattractive in duty-cycled operation in IoT applications due to the long settling time. The floating-inverter amplifier (FIA) [2] does not require biasing and CMFB, which makes it an attractive option for IoT applications.
Yaopeng Hu1, Yibo Zhao1, Wanyuan Qu1, Le Ye2, Menglian Zhao1, Zhichao Tan1
Zhejiang University, Hangzhou, China