A 0.6-V MOSFET-Only Subthreshold-Leakage Suppressed CMOS Fully Differential Switched-Capacitor Amplifier
نویسندگان
چکیده
This paper presents a 0.6-V MOSFET-only subthreshold-leakage suppressed CMOS fully differential switched-capacitor amplifier with an analog T-switch scheme. The circuit uses substrate-biased MOSFETs in its depletion region as capacitors linearized by a compensation technique. The circuit design of major building blocks is described herein. The experimental results demonstrate the performance of this circuit. The switched-capacitor amplifier operates with a signal-to-total harmonic distortion ratio of 36 dB for an input 10-kHz sinusoidal amplitude of 0.12 Vpp and dissipates 145.39 μW. The circuit was fabricated in a standard 0.18 μm CMOS technology with an area of 500 μm× 520 μm. The experimental results confirm the capability of compensated depletion-mode MOS capacitors and the proposed analog T-switch scheme to fulfill circuit requirements.
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تاریخ انتشار 2016