CMOS芯片
线性
功勋
三角积分调变
动态范围
带宽(计算)
缩放
电阻器
电子工程
噪音(视频)
物理
计算机科学
电气工程
工程类
电信
人工智能
光电子学
光学
电压
图像(数学)
镜头(地质)
作者
Shubham Mehrotra,Efraïm Eland,Shoubhik Karmakar,Angqi Liu,Burak Gönen,Muhammed Bolatkale,Robert van Veldhoven,Kofi A. A. Makinwa
标识
DOI:10.1109/esscirc55480.2022.9911295
摘要
This paper presents a continuous-time zoom ADC for audio applications. It combines a 4-bit noise-shaping coarse SAR ADC and a fine delta-sigma modulator with a tail-resistor linearized OTA for improved linearity, energy efficiency, and handling of out-of-band interferers compared to previous designs. In 160 nm CMOS, the prototype chip occupies 0.36 mm 2 , achieves 107.2 dB SNR, 106.6 dB SNDR, and 107.3 dB dynamic range in a 24 kHz bandwidth while consuming 590 µW from a 1.8 V supply. This translates into a Schreier figure-of-merit (FoMs) of 183.4 dB and a FoM SNDR of 182.7 dB.
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