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US Patent Application 20100066449 - THREE-STAGE FREQUENCY-COMPENSATED OPERATIONAL AMPLIFIER FOR DRIVING LARGE CAPACITIVE LOADS

Application 20100066449 Filed on June 18, 2009. Published on March 18, 2010

Inventor

US Classes

330/253, Having field effect transistor330/254Having gain control means

Attorney, Agent or Firm

International Class

H03F 3/45

Issued Patent Number:

7973605


Abstract text


A three-stage frequency-compensated operational amplifier includes a first-stage circuit, a second-stage circuit incorporated with a first compensation circuit, a third-stage circuit, and a second compensation circuit. The three-stage frequency-compensated operational amplifier functions as a two-stage operational amplifier at high frequencies, thereby capable of driving large capacitive loads with low power consumption.

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