| Citation: |
Ma Haifeng, Zhou Feng, Niu Qi, Lü Changhui. Nested Miller Active-Capacitor Frequency Compensation for Low-Power Three-Stage Amplifiers[J]. Journal of Semiconductors, 2008, In Press.
Ma H F, Zhou F, Niu Q, Lü C. Nested Miller Active-Capacitor Frequency Compensation for Low-Power Three-Stage Amplifiers[J]. J. Semicond., 2008, 29(9): 1698.
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Nested Miller Active-Capacitor Frequency Compensation for Low-Power Three-Stage Amplifiers
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Abstract
A new frequency compensation technique for low-power,area-efficient multistage amplifiers is introduced.Using nested active capacitors,our scheme achieves better bandwidth-to-power and slew-rate-to-power performances than previous works.Implemented in standard 0.35μm CMOS technology,our three-stage amplifier achieves 105dB DC gain,3.3M GBW,68° phase margin,and 2.56V/μs average slew rate under a 150pF capacitive load.All of these are realized with only 40μW power consumption under a 2V power supply,with very small compensation capacitors.-
Keywords:
- multistage amplifier,
- frequency compensation,
- low power
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