AnsweredAssumed Answered

AD5064 driving capacitive load

Question asked by zoujx on Mar 22, 2012
Latest reply on Mar 28, 2012 by zoujx

I am using the AD5064 to output a DC level to a high bandwidth amplifier for offset adjusting purpose.

    The problem is that the voltage output noise of AD5064 is larger than desired, so I want to add a RLC-RLC low-pass filter after the AD5064 output to reduce the noise. But the "Capacitive Load Stability" of AD5064 is 1nF maximum according to the datasheet, and the capacitance is beyond this value.

Would the capacitance cause the DAC output DC level unstable? If it is true, can I add a voltage tracker formed by Op to isolate the DAC and capacitive load to fix it?(Does the capacitive load of Op is big enough?)

 

Thanks

Outcomes