MEGA128CAN Datasheet, PDF (275/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

AT90CAN128
• Offset: The deviation of the first transition (0x000 to 0x001) compared to the ideal
transition (at 0.5 LSB). Ideal value: 0 LSB.
Figure 136. Offset Error
Output Code
Ideal ADC
Actual ADC
Offset
Error
V_REF Input Voltage
• Gain Error: After adjusting for offset, the Gain Error is found as the deviation of the
last transition (0x3FE to 0x3FF) compared to the ideal transition (at 1.5 LSB below
maximum). Ideal value: 0 LSB
Figure 137. Gain Error
Output Code
Gain
Error
Ideal ADC
Actual ADC
V_REF Input Voltage
4250E–CAN–12/04
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