Here are some ways to use high-speed Current Feedback and Voltage Feedback op amps to do the job.It’s more difficult to design a good current-to-voltage converter using a Voltage Feedback Amplifier (VFA). As discussed above, phase shift caused by photo-diode capacitance is often a source of instability. Furthermore, wide bandwidth usually comes at the expense of supply currents and higher supply voltage. However, the new LMH6642 high-speed low-voltage VFA op amp has excellent performance
in a transimpedance gain block.This device can operate down to 2.7V single supply and its −3dB BW (AV = +1) is more than 100MHz (with a supply current of only 2.7mA)
Here are some ways to use high-speed Current Feedback and Voltage Feedback op amps to do the job.It’s more difficult to design a good current-to-voltage converter using a Voltage Feedback Amplifier (VFA). As discussed above, phase shift caused by photo-diode capacitance is often a source of instability. Furthermore, wide bandwidth usually comes at the expense of supply currents and higher supply voltage. However, the new LMH6642 high-speed low-voltage VFA op amp has excellent performance