Test Methodology:In this test we excite the DAC with a 1KHz square wave at -3dBFS and observe the step response on a scope for each of the seven different reconstruction filters available in the DAC settings menu.
Test Results:
- Fast roll-off, linear phase filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg320/#msg320)
- Slow roll-off, linear phase filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg321/#msg321)
- Fast roll-off, minimum phase filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg322/#msg322)
- Slow roll-off, minimum phase filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg323/#msg323)
- Apodizing, fast roll-off, linear phase filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg324/#msg324)
- Hybrid, fast roll-off, minimum phase filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg325/#msg325)
- Brickwall filter (https://analog-precision.com/forum/performance-and-measurements/dac-filter-step-response/msg326/#msg326)
Conclusion: