Q:
I have used the AD7626 in previous designs and I am considering it for a higher frequency measurement design - is there performance for the AD7626 with input frequencies > 1 MHz and can you recommend…
The selection of a filter approximation can be determined by considering a frequency and time response trade-off. A Chebyshev LPF amplitude response has higher stopband attenuation to Butterworth or Bessel…
Q:
For the output drive signal chain based around a precision DAC, what is the best way to simulate or calculate the total output signal chain error?
A:
The precision DAC Error Budget Calculator…
Q:
Will noise performance improve if I reduce filter bandwidth?
A:
Noise performance will improve for higher gain settings (i.e. 8 and 16).
However, a lower filter bandwidth will reduce the highest…
Q:
How can I quickly check if there is a difference between using a fully differential amplifier vs two unity gain buffers as the ADC input drive circuit for the LTC2387-18?
A:
The Precision ADC…
S et the signal chain gain so that the amplifiers' total noise is the same or a bit less than the ADC's.
Any higher gain makes the ADC driver work harder without helping the system SNR.
Don't feel…
Q:
I am considering using the ADA4945-1 to drive the LTC2387-16 but need some gain at this stage to condition the signal before the ADC. Should I expect the noise and distortion to degrade if I add gain…
Q:
I am designing a transimpedance amplifier to amplify the current coming from a photodiode.
With an input frequency of 1MHz and aiming to optimize the noise in the circuit, what is the recommended…
Q:
What are the main differences to consider when designing your filter for single channel signal chain VS multichannel (multiplexed) signal chain architectures?
A:
An analog filter for a single…
Q:
How do you find pole sensitivity of the filter?
A:
The pole sensitivity of a filter circuit depends on the Q value of a complex pole pair. Increasing the Q value of a second order filter increases…
FAQs
