dsp56800eerm Freescale Semiconductor, Inc, dsp56800eerm Datasheet - Page 156

• Manufacturer Part Number: dsp56800eerm
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

Figure 10-22 ADC Absolute Error Over Processing and Temperature Extremes Before
and After Calibration for VDC
= 0.60V and 2.70V
in
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 14 parts: three each from three processing corner lots and two from the fourth
processing corner lot, as well as three from one nominally processed lot, each at three temperatures: -40°C,
27°C, and 150°C (giving the 42 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
28%) the collective variation (spread) of the absolute error of the population. It also significantly reduced
(by as much as 80%) 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 for any population of parts, including those which represent processing and
temperature extremes.
56F8357 Technical Data, Rev. 15
156
Freescale Semiconductor
Preliminary