Given:
Range 0: −0.166VFB < Lin DAC < +0.166VFB
Find:
Lin DAC value for KLIN = −0.082
Solution:
- Absolute value of KLIN = |−0.082| = 0.082
- Decimal # Counts = 0.082 / (0.166/127) = 62.7349
- Use 63 counts → 3Fh → 0011 1111
- However, −0.082 is needed. Add 1 in the sign bit (MSB, Bit 7) for negative ratio
- Final Lin DAC setting: 1011 1111 → BFh