⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种斩波稳定放大器，通过分析斩波引起的互调失真（IMD）主要源于放大器输入级的非线性，并采用一种新型的谐波抑制技术，实现了-107dB的IMD性能和28dB的斩波诱导IMD抑制，有效解决了输入频率接近斩波频率偶数倍时IMD折返至低频的问题。
low-frequency noise. However, the interaction between the input signal and the chopper clock can cause chopper-induced intermodulation distortion (IMD) [1-5]. This is especially problematic for input frequencies (Fin) near even multiples of the chopping frequency (FCH), as the resulting IMD tones fold-back to low frequencies and so cannot be filtered out. In [2-4], spread-spectrum clocks are used to convert such tones into noise-like signals. However, this increases the noise floor and does not address the underlying problem. This paper shows that chopper-induced IMD is mainly due to amplifier delay, which results in large chopping spikes. A novel fill-in technique is proposed that mitigates these spikes, and so reduces the chopper-induced IMD. In a prototype chopper-stabilized amplifier, it
Thije Rooijers1, Shoubhik Karmakar1, Yoshinori Kusuda2, Johan H. Huijsing1, Kofi A. A. Makinwa1
Delft University of Technology, Delft, The Netherlands Analog Devices, San Jose, CA 1 2 Amplifiers often employ chopping to achieve low offset and