A chopper and auto-zero offset-stabilized CMOS instrumentation amplifier
A chopper and auto-zero offset-stabilized CMOS instrumentation amplifier
复制标题
斩波器和自动调零偏置稳定 CMOS 仪表放大器
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
K. Makinwa
中科院分区:
文献类型:
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作者:
J. Witte;J. Huijsing;K. Makinwa
This paper describes a CMOS instrumentation amplifier with a noise density of 42nV/νHz and 640kHz GBW at 325µA supply current. It achieves 2.5µV input offset voltage, 130dB CMRR, and 114dB PSRR by the combined use of chopping, auto-zeroing and a current-feedback topology.