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What is large signal voltage gain (Av) of an operational amplifier?

Latest Updated:12/01/2011

Question:

What is large signal voltage gain (Av) of an operational amplifier?

Answer:

Also known as open voltage (no negative feedback) gain, large signal voltage gain is used in data sheets to show the differential voltage gain in direct current. A value of around 100 dB (x100,000) is standard for an operational amplifier.
The Av vs. f characteristics in the general-purpose operational amplifier uPC151 are shown below. Note how the Av value tends to decrease as the frequency increases.

Suitable Products
Operational Amplifiers
USB2.0 Host/Peripheral Controller
M66596, R8A66597
UPD720150