11. Many otherwise good power amplifier designs have been found to have inadequate slew rates , by modern standards. 12. For example, the general purpose TL081 op-amp has a slew rate of 13 V per microsecond. 13. This example used a fixed mounted flywheel sized to result in a 1 / 2 Hz per second slew rate . 14. Typical higher performance gradients have a slew rate of up to 100 200 T�m " 1 �s " 1. 15. However, it is more common for op-amps to have slew rates in the range 5-100 V per microsecond. 16. Slew rate helps us identify the maximum input frequency and amplitude applicable to the amplifier such that the output is not significantly distorted.17. Thus it becomes imperative to check the datasheet for the device's slew rate before using it for high-frequency applications. 18. ;Slewing : The amplifier's output voltage reaches its maximum rate of change, the slew rate , usually specified in volts per microsecond. 19. After 10x amplification, the output should be a 10 V, 100 kHz sawtooth, with a corresponding slew rate of 1 V per microsecond. 20. If the second stage has an effective input capacitance C and voltage gain A _ { 2 }, then slew rate in this example can be expressed as:
