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JSSC 2012第11期Digital Circuits40nm CMOSNeural Network Accelerator

100 dB A-Weighted SNR Microphone Preampli fier With On-Chip Decoupling Capacitors

设计了一种无需外部输入解耦电容、增益可编程的麦克风前置放大器,采用片上解耦电容技术。
动态范围(DR)105 dB A-weighted,信噪比(SNDR)101 dB A-weighted,功耗330 μW,1.5V电源
麦克风前置放大器片上解耦电容增益可编程动态范围信噪比
创新点1:无需外部输入解耦电容,通过片上工艺边缘电容实现内部解耦,显著减少外部元件需求,简化系统设计(电路创新)。
创新点2:增益可编程(0至19.5 dB,步进1.5 dB),提供灵活的增益调节能力,适应不同音频信号处理需求(系统创新)。
创新点3:支持平衡和单端输入,增强输入兼容性,适用于多种音频信号源(系统创新)。
创新点4:在40-nm数字CMOS工艺中集成,利用七层金属和双栅氧化物选项,优化面积和功耗,实现高性能(工艺创新)。
Abstract
This paper presents the design and realization of a gain-programmable microphone audio preampli fier that does not need external input-decouplin g capacitors. Three possible preamplifier implementations with on-chip decoupling capacitors have been presented and compared in terms of audio quality performance, power consumption, and silicon area occupation. The chosen solution has been integrated in a 40-nm digital CMOS process with seven metal layers and a double gate-oxide option. Process fringe c