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16运算放大器复习(国外英语资料)
16运算放大器复习(国外英语资料)
This article is contributed by guo__ke2
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The sixteenth chapter, the 16 chapter, integrated operational amplifier
Review: review: application of operational amplifiers in signal computing
First, proportional operation
1. inverting proportion operation + UI - 2. phase proportion operation R1, R2, RF, R1, R2 +
H-infinity???
RF - +
H-infinity???
+
+ uo -
U, R, O, F, A, f = =1+, u, u, R + I 1
- UI
+
+ uo -
Two 、 adder circuit
1. inverting addition circuit
Ui2 ui1
Ri2 Ri1 R2 R1
RF - +
H-infinity???
RF, RF, uo = = (ui1 + UI 2) Ri1 Ri 2
2. phase addition operation circuit ui1 ui2
+
RF - + +
H-infinity???
+ uo -
Ri1 Ri2
+ uo -
R, R2, R1, F, I, I, uo = (1+) (ui1 + ui2), R, R1 + R2, R1 +, R2,, I,, I, I, I
Three, subtraction circuit
RF + ui1 + ui2 R2 - R1 + + + R3
H-infinity???
+ uo -
R, R, R, F, 3, uo = (1+) ui2, F, ui1, R, R,, +R, R,...
Analysis method: by using the superposition principle, the subtraction circuit can be regarded as the superposition of the inverting proportional operation circuit and the in-phase proportional operation circuit. Superposition of proportional operation circuits.
16.2.4 integral operational circuit
If + UI - I1, R1, R2, uC, C + - F - +
H-infinity???
1 uo = uidt RCF 1 formula?
+ uo -
+
In the analysis of integral circuit attention problems: in the analysis of integral circuit attention problems:
1 T = t0? Uidt +uo formula (to) RCF 1
1, when the input voltage is UI for discontinuous signals, because the integral circuit, when the input voltage is not continuous signal, u output voltage from the voltage on the capacitor voltage, the output of O is obtained from the voltage on the capacitor, so can not jump at the input voltage of u integral for discontinuous output voltage U change in input voltage I discontinuous integral output voltage o, must add the initial value of output volt
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