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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A 10.7-MHz 68-dB SNR CMOS continuous-time filter with on-chip automatic tuning
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A 10.7-MHz 68-dB SNR CMOS continuous-time filter with on-chip automatic tuning

机译：具有片上自动调谐功能的10.7MHz 68dB SNR CMOS连续时间滤波器

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摘要

A maximally flat 10.7-MHz fourth-order bandpass filter with an on-chip automatic tuning system is presented. The signal-to-in-band integrated noise ratio (SNR) of the automatically tuned filter is around 68 dB. The third intermodulation distortion (IM3) is lower than -40 dB for a two-tone input signal of 3.2 V peak to peak (V/sub p-p/). The complete system operates with supply voltages of +or-2.5 V. The power consumption of the system is 220 mW. All this has been achieved due to the use of a low-distortion transconductor, the development of a high-frequency CMOS resistor, and the realization of an advanced on-chip automatic tuning system for both frequency and bandwidth control. The chip has been fabricated in a standard 1.5- mu m n-well CMOS process.
机译：提出了一种最大平坦的10.7 MHz四阶带通滤波器，带有片上自动调谐系统。自动调谐滤波器的信号带内集成噪声比（SNR）约为68 dB。对于峰峰值为3.2 V（V / sub p-p /）的两音输入信号，第三互调失真（IM3）低于-40 dB。整个系统的供电电压为+或-2.5V。系统的功耗为220 mW。由于使用了低失真跨导器，开发了高频CMOS电阻器，并且实现了用于频率和带宽控制的高级片上自动调谐系统，所有这些都得以实现。该芯片采用标准的1.5微米n阱CMOS工艺制造。

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