Tool/software:
Hello,
I am evaluating the VSP5612 with a CCD sensor.
With the gain settings of APG=45 and DPG=0, the output values only range from 0x0000 to 0xFBxx.
Even after changing APG and OFDAC, the clipping at 0xFBxx remains unchanged.
Since 255/251 ≈ 1.016, I tried increasing DPG_1 slightly, from ×1.000 (0) to about ×1.016 (code 4–5).
With this adjustment, the output extends up to 0xFFFF as expected. From the block diagram, this behavior suggests that the clipping originates in the ADC stage.
Using DPG as a workaround is acceptable in practice, but I am concerned that the root cause is unclear. The datasheet does not mention such a limitation in the ADC.
Am I overlooking something? Could you please provide any advice or clarification?
Thank you very much for your support.
Best regards,
Mori