科研之友
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摘要
A low-noise small-area three-stage operational amplifier is presented for arrayed sensor interface systems. The designed amplifier employs a novel small-area phase compensation scheme that allows a relatively high transconductance in the first stage, resulting in relatively low input-referred noise. The proposed amplifier implemented in a standard 180-nm CMOS process occupies an active area of only 0.015 . The measurement results show that the amplifier achieves a 6.2-MHz gain-bandwidth product, an input-referred noise of 27 nV/Hz, and a phase margin of 60A degrees. The current dissipation is 177 A at a power supply of 1.5 V.
- 出版日期2018-9
