A 65-dB SNDR Continuous-Time Delta-Sigma ADC Integrated by IZO Thin-Film Transistors

Wen-Xing Xu,Jun-Rong Chen,Fei-Fan Li,Lei Zhou,Xiao-Qin Wei,Miao Xu,Lei Wang,Wei-Jing Wu,Yu-Rong Liu,Jun-Biao Peng

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS（2024）

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摘要

This brief presents a first-order continuous-time delta-sigma ADC in IZO TFT process. The presented ADC achieves 65 dB SNDR in 30-Hz bandwidth and 43-dB SNDR in 304-Hz bandwidth. For TFT analog building block, a 60-dB dc gain, 400-kHz unity-gain frequency operational amplifier (OPA) using hybrid Miller/feedthrough compensation is proposed. And a 3- mu$ propagation delay latch comparator is proposed.

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关键词

Analog-to-digital converter,operational amplifier,comparator,IZO TFTs

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