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Improved common-mode feedback based on LCMFB techniques

机译:基于LCMFB技术的改进的共模反馈

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A novel class AB Differential Difference Amplifier (DDA) for use in continuous-time common-mode feedback circuits is proposed. It is based on using resistive Local Common-Mode Feedback (LCMFB) to enhance gain-bandwidth product (GBW) and dynamic operation of the common-mode feedback loop, without requiring extra static power consumption or supply voltage requirements. Simulation results for a 0.5 μm CMOS process show an increase in open loop DC gain (A) of 15.3 dB and also in GBW by a factor of 5.5. Additionally, measurement results for a test chip prototype fabricated in the same process validate the proposal.
机译:提出了一种用于连续时间共模反馈电路的新型AB类差分差动放大器(DDA)。它基于使用电阻性本地共模反馈(LCMFB)来增强增益带宽乘积(GBW)和共模反馈环路的动态工作,而无需额外的静态功耗或电源电压要求。 0.5μmCMOS工艺的仿真结果显示,开环直流增益(A)增加了15.3 dB,GBW也增加了5.5倍。此外,在同一过程中制造的测试芯片原型的测量结果验证了该建议。

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