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Low-Voltage and High-CMRR Differential Amplifier Using FG-MOSFET’s
K. Tanno,N. Horita,H. Tanaka,R. Miyauchi,H. Tamura 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
In this paper, low-voltage and high-CMRR differential amplifier using two-input floating-gate MOSFET’s is presented. The proposed differential amplifier is based on the bulk biasing technique proposed by Monsurro. Monsurro’s amplifier, however, requires the low-boost circuits and twin-well process. In the proposed amplifier, these disadvantages are removed. The circuit is evaluated through Star-HSPICE with a set of device parameters of 0.35㎛ CMOS process. The simulations demonstrate a common-mode gain of ?59.5㏈ and a differential gain of 16.2㏈ with VDD = 1.4V. And the chip area is 131㎛×101㎛ from the mask layout design.