H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/20
H03F 3/16 (2006.01) H03F 1/08 (2006.01) H03F 1/26 (2006.01) H03F 1/48 (2006.01) H03F 3/30 (2006.01) H03F 3/45 (2006.01)
Patent
CA 1138055
- 11 - CMOS OPERATIONAL AMPLIFIER WITH IMPROVED FREQUENCY COMPENSATION Yusuf A. Haque Abstract of the Disclosure An operational amplifier circuit comprised of comple- mentary MOS transistors and having a bias section, a differential amplifier section, a level shift stage and an output stage, provides for frequency compensation using two capacitors. One capacitor, connected between the differential amplifier section and the output stage through a CMOS transmission gate that functions as a resistor, acts as the dominant pole of the transfer function. A second capacitor between the amplifier section output node and a level shift transistor, functions to remove the secondary poles in the transfer function and cause the dominant pole to occur at a higher frequency.
361105
American Microsystems Inc.
Smart & Biggar
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