MC56F836 Freescale Semiconductor, Inc, MC56F836 Datasheet - Page 162

• Manufacturer Part Number: MC56F836
• Description: 56f8300 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

Note: The absolute error data shown in the graphs above reflects the effects of both gain error and offset
error. The data was taken on 25 parts: five each from four processing corner lots as well as five from one
nominally processed lot, each at three temperatures: -40°C, 27°C, and 150°C (giving the 75 data points
shown above), for two input DC voltages: 0.60V and 2.70V. The data indicates that for the given
population of parts, calibration significantly reduced (by as much as 24%) the collective variation (spread)
of the absolute error of the population. It also significantly reduced (by as much as 38%) the mean
(average) of the absolute error and thereby brought it significantly closer to the ideal value of zero.
Although not guaranteed, it is believed that calibration will produce results similar to those shown above
162
Figure 10-21 ADC Absolute Error Over Processing and Temperature Extremes Before
6. Absolute error includes the effects of both gain error and offset error.
7. Please see the 56F8300Peripheral User’s Manual for additional information on ADC calibration.
8. ENOB = (SINAD - 1.76)/6.02
and After Calibration for VDC
56F8365 Technical Data, Rev. 7
in
= 0.60V and 2.70V
Freescale Semiconductor
Preliminary