⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种基于动态放大器实现的FIR-IIR滤波器的噪声整形SAR ADC，在5MHz带宽内实现了79.7dB SNDR，功耗仅0.46mW，解决了传统SAR ADC受限于比较器噪声以及ΔΣ调制器需要大体积运放的问题。
The successive approximation register (SAR) ADC is the most energy efficient architecture with moderate conversion rate and resolution. However, its comparator noise limits its resolution without sacrificing power efficiency. The delta-sigma modulator (DSM) is the most popular architecture for achieving high SNDR due to its oversampling, but the bulky operational amplifier (op-amp) makes it area inefficient. In LTE Advanced, the bandwidth (BW) of downlink ADCs needs to be configured according to the number of inter-band non-contiguous carrier aggregation (NCCA), which motivates us to combine the benefits of both architectures to reduce area and power consumption simultaneously with high SNDR. The noise-shaping SAR ADC [1] suppresses the comparison and quantization noise in signal BW using a simple cascaded FIR-IIR filter, which obviates the need for a power-hungry low-noise comparator or high-performance
Chun-Cheng Liu, Mu-Chen Huang
MediaTek, Hsinchu, Taiwan