Hello team,
On the datasheet, it is stated FDC1004 has programmmable output rates of 100/200/400 S/s.
Is output rate = sampling rate?
Also it is stated that the effective resolution is going to change with the sampling rate.
What is the resolution vs sampling rate?
ex.) 100s/s: 16bit, 200s/s: 14bit ...
Best Regards,
Kei Kuwahara
Kei,
I think we can estimate the resolution with some of simple calculations based on some data sheet plots.
Figure 7-9 in the data sheet show the bandwidth and dynamic range of the device for Fsamp = 100Hz, 200Hz, and 400Hz.
Based on the plots, we can approximate the dynamic range as:
| Fsamp (Hz) | Dynamic Range (dB) |
| 100 | 98 |
| 200 | 100 |
| 400 | 103 |
If we assume the traditional 6dB/bit, then we can approximate the resolution as:
| Fsamp (Hz) | Resolution (bits) |
| 100 | ~16.3 |
| 200 | ~16.7 |
| 400 | ~17.2 |
where we round of bits to nearest integer for reporting purposes.
Regards,
John
