本文提出了一种基于开关电容电路的带宽与分辨率可配置离散时间" delta-sigma" 调制器。针对不同工业应用场景对测量精度、信号带宽及动态范围的多样化需求，该调制器设计了阶数可重构的环路滤波器结构，通过外部控制信号可在三阶和四阶模式间切换；同时，通过适配不同的过采样率（OSR），系统能够协同调节信号带宽与测量分辨率。本文使用MATLAB 进行建模与仿真（OSR=200），在稳定性方面，三阶模式具有更宽松的稳定条件，其最大稳定幅值（MSA）为 -4.4 dBFS，较四阶模式（-19.6 dBFS）优化了 15.2 dB，适用于大幅值信号处理；在分辨率方面，四阶模式展现了卓越的噪声整形能力，其动态范围（DR）高达 -154.4 dBFS，相比三阶模式的 -129.6 dBFS 提升了 24.8 dB，可精确分辨微弱信号。为验证带宽与精度的可配置性，本文结合实际仿真结果测试了不同过采样率（OSR）下的性能指标。测试数据显示，在低过采样率区间（OSR < 20），三阶调制器表现出更优的信噪比（SQNR），例如在 OSR=14 时，三阶与四阶模式的 SQNR 分别为 22.549 dB 和 15.383 dB；随着 OSR 的提升（OSR ≥ 20），四阶模式的噪声整形优势开始占据主导。该设计不仅解决了单一结构难以兼顾多场景的问题，更通过阶数与 OSR 的协同配置，在低 OSR 区间利用三阶结构获得更高增益，而在高 OSR 区间发挥四阶结构的高精度特性。该设计不仅解决了高阶调制器在大信号下的稳定性问题，更利用三阶与四阶在不同OSR区间的增益特性，实现了带宽互换，面向不同带宽应用进行了优化配置。

This paper presents a bandwidth and resolution-configurable discrete-time Delta-Sigma modulator based on switched-capacitor circuits. To address the diverse requirements for measurement precision, signal bandwidth, and dynamic range in various industrial applications, the modulator features a reconfigurable loop filter architecture that can switch between third-order and fourth-order modes via an external control signal; concurrently, the system enables the collaborative adjustment of signal bandwidth and resolution by adapting different oversampling ratios (OSRs). System modeling and simulations were conducted using MATLAB (OSR=200). Regarding stability, the third-order mode exhibits more relaxed stability conditions with a Maximum Stable Amplitude (MSA) of -4.4 dBFS—an optimization of 15.2 dB over the fourth-order mode (-19.6 dBFS)—making it suitable for large-amplitude signal processing. In terms of resolution, the fourth-order mode demonstrates superior noise-shaping capabilities, achieving a dynamic range (DR) of -154.4 dBFS, which is a 24.8 dB improvement over the third-order mode (-129.6 dBFS), allowing for the precise resolution of weak signals. To verify the configurability of bandwidth and precision, performance metrics were tested under varying OSRs. Simulation data indicate that in the low-OSR region (OSR < 20), the third-order modulator provides a superior Signal-to-Quantization-Noise Ratio (SQNR); for instance, at OSR=14, the third-order and fourth-order modes yield SQNRs of 22.549 dB and 15.383 dB, respectively. As the OSR increases (OSR ≥ 20), the fourth-order mode's noise-shaping advantage becomes dominant. This design not only overcomes the limitations of single-structure modulators in multi-scenario applications but also achieves an optimized bandwidth-precision trade-off by leveraging the higher gain of the third-order structure at low OSRs and the high-precision characteristics of the fourth-order structure at high OSRs, effectively resolving the stability issues of high-order modulators under large-signal conditions.