http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
하장용,전석희,박종태,유종근 한국통신학회 1996 韓國通信學會論文誌 Vol.21 No.12
A threshold voltage extraction scheme which does not need matched replica of the MOSFET under test is proposed. In contrast to alternative methods, the accuracy of the proposed scheme does not depend on the matching of the test transistors. The proposed scheme has been implemented in a matching-free way using a switched-capacitor subtracting ampliier and a dynmic current mirror. Nonideal effects associated with these circuits, such as non-zero offset voltages and finite gains of op-amps, capcitor mismateches, and charge injection of MOS switches, are investigated and compensated. The circuit has been designed using ISRC 1.5.mu.m CMOS process parameters andfabricated at Inter-University semiconductor Research Center, and its performance has been evaluated.
유종근,박종태,이태원,하장용,김현중 대한전자공학회 1996 CAD 및 VLSI 설계연구회지 Vol.5 No.1
An algorithmic ADC using switched-capacitor techniques is described. The roposed ADC is insensitive to the capacitor-ratio accuracy as well as the finite gain and offset of the operational amplifiers. The charge injection noise of analog MOS switches which becomes the most significant factor limiting the accuracy of switched-capacitor circuits is also compensated using dummy switches. Spice simulation results have shown that a 12-bit resolution at the sampling frequency of 7kHz can be achieved when the voltage gain of the operational amplifiers is only 58dB. The designed circuit is being fabricated with the aid of IDEC.