Suppression of High Frequency Distortion in the Multiple-Input Current-Mode MAX Circuits by Adjustment of Transconductance

전류 모드 다 입력 MAX회로에서 트랜스컨덕턴스 조정에 의한 고주파 왜곡 억제

A distortion suppression technology for employing multiple inputs in 3n+1 type current mode Max circuit is proposed using the adjustment of transconductance. If the number of inputs in current mode Max circuit increases, the high frequency distortion in the output signal grows. In this paper, it has been disclosed that the distortion in the multiple input Max circuit is proportional to sum of parasitic capacitance in input terminals, to the derivative of the output signal and also to the inverse of transconductance of the common diode-connected transistor. The proposed idea is by employing as larger transconductance of the common diode-connected transistor as possible. The effectiveness of the proposed idea has been proved through the HSPICE simulation.