ST7PLIT115BF1M3 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST7PLIT115BF1M3
STMicroelectronics
ST7PLIT115BF1M3 Datasheet PDF : 159 Pages
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ST7LITE1xB
ADC CHARACTERISTICS (Cont’d)
ADC Accuracy with VDD=5.0V
Symbol
Parameter
ET Total unadjusted error
EO Offset error
EG Gain Error
ED Differential linearity error 3)
EL
Integral linearity error 3)
Conditions
Typ
4
3
fCPU=8MHz, fADC=4MHz
0.5
1.5
1.5
Max
6 1)
5 1)
4 1)
3 2)
3 2)
Unit
LSB
Notes:
1. Data based on characterization results. Not tested in production.
2. Injecting negative current on any of the analog input pins significantly reduces the accuracy of any conversion being
performed on any analog input.
Analog pins can be protected against negative injection by adding a Schottky diode (pin to ground). Injecting negative
current on digital input pins degrades ADC accuracy especially if performed on a pin close to the analog input pins.
Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in Section 13.8 does not affect the
ADC accuracy.
3. Data based on characterization results over the whole temperature range, monitored in production.
Figure 111. ADC Accuracy Characteristics with amplifier disabled
1023
1022
1021
7
6
5
4
3
2
1
Digital Result ADCDR
1LSBIDEAL
=
V-----D-----D-----–-----V----S-----S--
1024
(2)
ET
EO
EL
1 LSBIDEAL
0
1234567
VSS
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.
1021 1022 1023 1024
VDD
Vin (LSBIDEAL)
140/159
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