ST7FLITE29 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7FLITE29
STMicroelectronics
'ST7FLITE29' PDF : 133 Pages View PDF
ADC CHARACTERISTICS (Cont’d)
Figure 91. ADC Accuracy Characteristics with amplifier enabled
ST7LITE2
Digital Result ADCDR
704
1LSBIDEAL
=
V-----D-----D-----–-----V----S-----S--
1024
(2)
ET
EO
EL
108
1 LSBIDEAL
0
1234567
VSS62.5mV
EG
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
(3)
(1)
ED
ET=Total Unadjusted Error: maximum deviation
between the actual and the ideal transfer curves.
EO=Offset Error: deviation between the first actual
transition and the first ideal one.
EG=Gain Error: deviation between the last ideal
transition and the last actual one.
ED=Differential Linearity Error: maximum deviation
between actual steps and the ideal one.
EL=Integral Linearity Error: maximum deviation
between any actual transition and the end point
correlation line.
701 702 703 704
430mV
Vin (LSBIDEAL)
Vin (OPAMP)
Note: When the AMPSEL bit in the ADCDRL register is set, it is mandatory that fADC be less than or equal
to 2 MHz. (if fCPU=8MHz. then SPEED=0, SLOW=1).
Vout (ADC input)
Vmax
Vmin
0V
Noise
430mV
Vin
(OPAMP input)
117/133
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