I am using the DAC in 250 MHz BW with 4x interpolation with the speed limit options as highlighted in the image below-
1. If I use the small fraction delay FIR filter will it reduce the BW further?
2. Is there any frequency response of this FIR filter available?
Hi,
1. the group delay FIR is meant to be an all pass filter with group delay (time delay or phase delay) capability. It will not reduce your overall BW
2. The filter coefficients of the FIR filters (interpolation filters) are listed in the datasheet. You may use Matlab to perform simulations for better detailed pictures of the frequency response:
