%0 Journal Article %T A Novel Low Voltage, Low Power and High Gain Operational Amplifier Using Negative Resistance and Self Cascode Transistors %J International Journal of Engineering %I Materials and Energy Research Center %Z 1025-2495 %A MiarNaimi, H. %A Fallah, Mohammad %D 2013 %\ 03/01/2013 %V 26 %N 3 %P 303-308 %! A Novel Low Voltage, Low Power and High Gain Operational Amplifier Using Negative Resistance and Self Cascode Transistors %K Negative Resistance %K Op Amp %K Self Cascode Transistors %R %X In this work a low power, low voltage and high gain operational amplifier is proposed. For this purpose a negative resistance structure is used in parallel with output to improve the achievable gain. Because of using self cascode transistors in the output, the proposed structure remains approximately constant in a relatively large output voltage swing causing an invariable gain. To evaluate the proposed method an op amp was designed in 0.18μm CMOS technology. The simulation  results showed a gain of 84dB, unity gain bandwidth of 12.45MHz and phase margin of 81 degree; with 1V power supply and 1pF load capacitor. %U https://www.ije.ir/article_72098_a3fc2754aace3ecbdc4aaeb27d0d3cb9.pdf