A 24.7 mW 65 nm CMOS SAR-Assisted CT ΔΣ Modulator With Second-Order Noise Coupling Achieving 45 MHz Bandwidth and 75.3 dB SNDR.
IEEE Journal of Solid-State Circuits（2016）
摘要
A continuous-time (CT) sixth-order ΔΣ modulator, employing a 4 bit asynchronous successive-approximation-register (ASAR) quantizer, incorporates second-order noise coupling (NC) and excess-loop-delay compensation, all are tightly integrated into the switched-capacitor (SC) SAR digital-to-analog converter (DAC). The mixed-mode second-order NC structure is implemented in both discrete-time (DT) and ...
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关键词
Modulation,Topology,Bandwidth,Couplings,CMOS integrated circuits,Quantization (signal),Transfer functions
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