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本文提出一种基于自定时动态放大器的增量Zoom ADC，在4.96µW功耗下实现15位分辨率，无需过采样时钟，适用于智能传感器和事件驱动IoT设备。该设计通过自定时架构在转换完成后自动断电，从而能效适应宽范围转换速率。
applications, such as smart sensors and event-driven IoT devices, which need ADCs with high resolution, high power efficiency, and can be multiplexed between multiple inputs. Despite these advantages, they usually need an oversampled clock. A self-timed incremental ∆Σ ADC is proposed in [1], which does not need any oversampled clock and has similar advantages to self-timed (or asynchronous) SAR ADCs. Since it is automatically powered down once a conversion is completed, it can adapt to a wide range of conversion rates in an energy-efficient way. However, the zero-crossing detector leads to high noise, and correlated level-shifting results in complex self-timed operation. Thus it only achieves a Schreier FoM of 157.1dB. To increase resolution and reduce power
Yuyan Liu1, Menglian Zhao1, Yibo Zhao1, Xiaopeng Yu1, Nianxiong Nick Tan1,
Le Ye2, Zhichao Tan1 Zhejiang University, Hangzhou, China Peking University, Beijing, China 1 2 The incremental analog-to-digital converter (IADC) is attractive in many