Op-Amp Bandwidth Calculator
Calculate closed-loop bandwidth of an op-amp circuit from its gain-bandwidth product and gain setting.
MHz
V/V
Closed-Loop Bandwidth
100.0 kHz
Bandwidth (Hz)100,000 Hz
Gain (dB)20.00 dB
Closed-Loop Bandwidth vs Gain-Bandwidth Product
Op-Amp Gain-Bandwidth Product
Formula
BW = GBW / A_CL
Where GBW is the gain-bandwidth product and A_CL is the closed-loop gain. Higher gain means lower bandwidth. This is a fundamental trade-off in op-amp circuits.
Example Calculation
An op-amp with GBW = 1 MHz set to a gain of 10.
- 01BW = 1 MHz / 10 = 100 kHz
- 02BW in Hz = 1,000,000 / 10 = 100,000 Hz
- 03Gain in dB = 20 x log10(10) = 20 dB
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