EFM32HG321 Datasheet, PDF (36/70 Pages) Silicon Laboratories – Output state retention and wake-up from Shutoff Mode

Preliminary
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Symbol
Parameter
Condition
Min
Typ
Max
Unit
INL_ADC
Integral non-linear-
ity (INL), End point
method
±1.2
LSB
MC_ADC
No missing codes
11.999¹
12
bits
1_{On the average every ADC will have one missing code, most likely to appear around 2048 ± n*512 where n can be a value in}
the set {-3, -2, -1, 1, 2, 3}. There will be no missing code around 2048, and in spite of the missing code the ADC will be monotonic
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.
The integral non-linearity (INL) and differential non-linearity parameters are explained in Figure 3.26 (p.
36) and Figure 3.27 (p. 37) , respectively.
Figure 3.26. 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
Analog Input
2015-05-06 - EFM32HG321FXX - _Rev0.91
36
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