Which op amp has high slew rate?
The LT1357 is a high speed, very high slew rate operational amplifier with outstanding AC and DC performance. The LT1357 has much lower supply current, lower input offset voltage, lower input bias current, and higher DC gain than devices with comparable bandwidth.
What is a high slew rate amplifier?
Slew Rate # : Closely related to power bandwidth, the slew rate is the maximum rate of change (measured in Volts per microsecond) of the amplifier output. The higher the amplifier power, the higher the slew rate must be to obtain the same power bandwidth.
How do you increase the slew rate of an amplifier?
To improve the slew rate, either the size of the compensation capacitors C1 and C2 must be decreased or the bias current of the differential amplifiers must be increased.
How much slew rate do I need?
Slew rate calculation & formula V = the maximum peak voltage of the signal. As an example, take the scenario where an op amp is required to amplify a signal with a peak amplitude of 5 volts at a frequency of 25kHz. An op amp with a slew rate of at least 2 π x 25 000 x 5 = 0.785V/µs would be required.
How do you increase slew rate?
Raising the Slew-Rate
- Figure 1. (a) Composite amplifier to achieve a higher slew rate using a current-feedback amplifier (CFA).
- Figure 2. A composite amplifier to raise the SR of the 741 op-amp.
- Figure 3.
Is slew rate affected by DC offset?
As long as the offset is in the linear range, it is not affected by DC offset. Slew rate is limited by two factors whichever is smaller; The main reason for slew rate is current limit.
What happens if slew rate is high?
Most amplifiers (even the cheap ones) should have a slew rate above 6.3 V/µs. The seemingly high slew rates of most amplifiers are simply good engineering. Having a slew rate that yields a maximum frequency well above the audible range will pretty much eliminate any potential errors and unwanted distortion whatsoever.
What is the advantage of a fast slew rate for an op amp?
The advantages include: Helps in determining input frequency and amplitude of the Amplifier. Prevents distortion of the output. Higher the Slew Rate, better is the reproduced signal.