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Ideal Operational Amplifiers - Coggle Diagram
Ideal Operational Amplifiers
Ideal differential
Output depends only on vid
vid independent of source and load R
Input R inf, output R 0
Open-circuit voltage gain or open-loop gain
Differentiator
Ideal operational
Same as ideal differential but voltage gain is inf
Assumption 1: Input voltage difference (vid) is zero
Assumption 2: Input currents = 0
Inverting amplifier
Ground positive input
Virtual ground: inverting-input terminal at ground potential
Connect resistors between - input and signal source and amplifier output node
Feedback network
Voltage gain
Output resistance = 0
Input resistance = R1
Transresistance amplifier
current-to-voltage (I-V) converter
Noninverting amplifier
closed loop gain
Unity-gain buffer
Voltage follower
Voltage across inputs must be 0
Summing amplifier
Summing junction
Sum currents
Simple DAC
Difference amplifier
Differential subtractor
Transfer function
Active low-pass filter
Active high-pass filter
Integrator