Analog Circuit Design Laboratory Report - MyWeb at WIT ...
Analog Circuit Design Laboratory Report - MyWeb at WIT ...
Analog Circuit Design Laboratory Report - MyWeb at WIT ...
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In associ<strong>at</strong>ion with the non-inverting amplifier characteristics, VO is equal to the<br />
Vin since Ed is equal to zero. This configur<strong>at</strong>ion further allows VO to equal Vin since the<br />
inverting pin source, the Rin and the Rf are not present, allowing non-inverting neg<strong>at</strong>ive<br />
feedback and an ACL equal to 1.<br />
Another op-amp configur<strong>at</strong>ion is the differential amplifier as shown in Figure 6.<br />
In this configur<strong>at</strong>ion the common mode voltage ECM is rejected by the op-amp.<br />
Figure 6– Differential Amplifier<br />
The differential gain, ADIFF, is equal to r<strong>at</strong>io of the resistances R and mR as shown in<br />
equ<strong>at</strong>ion 9, and the output voltage is equal to this gain times the input differential voltage<br />
as given in equ<strong>at</strong>ion 10.<br />
ADIFF = mR / R Eq. (9)<br />
VO = ADIFF * (E1 – E2) Eq. (10)<br />
11
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