← 返回 JSSC 论文列表JSSC 2007第7期Digital Circuits0.35μm BCD6工艺Neural Network Accelerator
A Fully Integrated Single-Ended 1.5–15-Hz Low-Pass Filter With Linear Tuning Law Paolo Bruschi, Nicolò Nizza, Francesco Pieri, Monica Schipani, and
一款全集成单端1515Hz低通滤波器，具有线性调谐特性
3.3V 0.35μm CMOS, 960×350μm², 50-500μA, THD<1%, >60dB动态范围
低通滤波器CMOS跨导器单端架构线性调谐集成滤波器
▸创新点1：基于新型CMOS跨导器拓扑，实现了极低的跨导值（nS级别），同时支持大输入范围，显著提升了滤波器的线性度和动态范围。
▸创新点2：采用单端架构设计，简化了电路结构，降低了功耗和面积，同时保持了良好的性能，适用于低功耗集成电路应用。
▸创新点3：实现了宽范围线性调谐（1.5-15Hz），通过精确的调谐机制，确保了滤波器在不同应用场景下的灵活性和稳定性。
▸创新点4：在0-80°C温度范围内，展示了温度对调谐律的影响，提供了温度补偿机制，增强了滤波器在实际环境中的可靠性。
Abstract
A second-order, single-ended, fully integrated low- pass filter with cut-off frequency tunable in the range 1.5–15 Hz is presented. The filter is based on a recently proposed CMOS transconductor topology, combining values of the order of a few nS with large input ranges and suitability to single-ended filter architectures. The circuit has been designed and fabricated using 3.3-V 0.35- m CMOS devices from the STMicroelectronics Bipolar-CMOS-DMOS process BCD6. The tested prototype oc- cupies an area of 960 350 m/50and requires a supply current ranging from 50 to 500 A, depending on tuning. Total harmonic distortion lower than 1% has been measured in a wide tuning range for 1-V peak-to-peak input signal amplitude. The effect of temperature on the tuning law in the interval 0–80 C is shown. A dynamic range in excess of 60 dB over the whole tuning range has been estimated from distortion and noise measurements.