N_OP&InstAmp_N16

N_OP&InstAmp_N16 - Operational Amplifiers and...

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EE 203 , Analog Electronics Operational Amplifiers and Insrumentational Amlifiers (16) Gp Capt (R) Muzaffar Ali 1
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Operational Amplifiers Properties open-loop gain : ideally infinite: practical values 20k-200k high open-loop gain virtual short between + and - inputs input impedance : ideally infinite: CMOS opamps are close to ideal output impedance : ideally zero: practical values 20-100 zero output offset : ideally zero: practical value <1mV gain-bandwidth product (GB) : practical values ~MHz frequency where open-loop gain drops to 1 V/V Characteristics Ideal Op Amp Practical Op Amp Open Loop Gain Infinite 20 K – 200 K Input Impedance Infinite CMOS opamps are close to ideal output impedance zero 20-100 Zero Output Offset Zero < 1 mV Gain-Bandwidth Product (GB) ~ M HZ , EE 203 , Analog Electronics 2
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Commercial opamps provide many different properties low noise low input current low power high bandwidth
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This note was uploaded on 01/29/2011 for the course EE 203 taught by Professor Gp.(r)muzaffarali during the Fall '10 term at College of E&ME, NUST.

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N_OP&InstAmp_N16 - Operational Amplifiers and...

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