EFM32TG210 Datasheet, PDF (30/66 Pages) Silicon Laboratories – Output state retention and wake-up from Shutoff Mode

...the world's most energy friendly microcontrollers
at all times so that a response to a slowly increasing input will always be a slowly increasing output. Around the one code that is
missing, the neighbour codes will look wider in the DNL plot. The spectra will show spurs on the level of -78dBc for a full scale
input for chips that have the missing code issue.
2_{Typical numbers given by abs(Mean) / (85 - 25).}
3_{Max number given by (abs(Mean) + 3x stddev) / (85 - 25).}
The integral non-linearity (INL) and differential non-linearity parameters are explained in Figure 3.17 (p.
30) and Figure 3.18 (p. 30) , respectively.
Figure 3.17. Integral Non-Linearity (INL)
Digital ouput code
4095
4094
4093
4092
INL= | [(V_D- V_SS)/ V_LSBIDEAL] - D| where 0 < D < 2^N - 1
Actual ADC
tranfer function
before offset and
gain correction
Actual ADC
tranfer function
after offset and
gain correction
INL Error
(End Point INL)
3
Ideal transfer
curve
2
1
VOFFSET
0
Figure 3.18. Differential Non-Linearity (DNL)
Analog Input
Di g i t al
ouput
code
4095
4094
4093
4092
5
4
3
2
1
0
DNL= | [(V_{D+ 1} - V_D)/ V_LSBIDEAL] - 1| where 0 < D < 2^N - 2
Full Scale Range
Example: Adjacent
input value VD+ 1
corrresponds to digital
output code D+ 1
Example: Input value
VD corrresponds to
digital output code D
Actual transfer
function with one
missing code.
Ideal transfer
curve
Code width = 2 LSB
DNL= 1 LSB
0.5
LSB
Ideal spacing
between two
adjacent codes
VLSBIDEAL= 1 LSB
Ideal 50%
Transition Point
Ideal Code Center
Analog Input
2015-03-06 - EFM32TG210FXX - d0012_Rev1.40
30
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