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STLUX385ATR Datenblatt(PDF) 88 Page - STMicroelectronics

Teilenummer STLUX385ATR
Bauteilbeschribung  Digital controller for lighting and power conversion applications
PDF  99 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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STLUX385ATR Datenblatt(HTML) 88 Page - STMicroelectronics

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Electrical characteristics
STLUX385A
88/98
DocID024387 Rev 2
ADC accuracy characteristics at VDD/VDDA 3.3 V
Table 53. ADC accuracy characteristics at VDD/VDDA 3.3 V
Symbol
Parameter
Conditions(1)
1.
Measured with RAIN<10 k
Ω (RAIN external series resistance interconnected between the AC signal
generator and the ADC input pin).
Typ.(2)
2.
Temperature operating: T
A
= 25 °C.
Min.(3)
3.
Data based on characterization results, not tested in production.
Max.(3)
Unit
|E
T
|
Total unadjusted error
(4)(5)(6)
4.
ADC accuracy vs. negative injection current. Injecting negative current on any of the analog input pins
should be avoided as this reduces the accuracy of the conversion being performed on another analog
input. It is recommended a Schottky diode (pin to ground) to be added to standard analog pins which may
potentially inject the negative current. Any positive injection current within the limits specified for I
INJ(PIN)
and
Σ
IINJ(PIN)
in the I/O port pin characteristic section does not affect the ADC accuracy. The ADC accuracy
parameters may be also impacted exceeding the ADC maximum input voltage V
IN1
or V
IN2
.
5.
Results in manufacturing test mode.
6.
Data aligned with trimming voltage parameters.
f
ADC
= 6 MHz
gain 1
2.8
LSB
|E
O
|Offset error
(4)(5)(6)
0.3
|EG|
Gain error
(4)(5)(6)(7)
7.
Gain error evaluation with two point method.
0.4
E
O+G
Offset + gain error
(7)(8)
8.
Temperature operating range: 0 ºC
≤ T
A ≤
85 ºC.
-8.5
9.3
E
O+G
Offset + gain error
(7)(9)
9.
Temperature operating range: -25 ºC
≤ T
A ≤
105 ºC.
-11
11
E
O+G
Offset + gain error
(7)(10)
10. Temperature operating range: -40 ºC
≤ T
A ≤
105 ºC.
-14.3
11.3
|ED|
Differential linearity error
(2,3,4)
0.5
|E
L
|
Integral linearity error
(4)(5)(6)
1.4
|E
T
|
Total unadjusted error
((4)(5)(6)
f
ADC
= 6 MHz
gain 4
2.8
|E
O
|Offset error
(4)(5)(6)
0.3
|E
G
|
Gain error
(4)(5)(6)(7)
0.4
E
O+G
Offset + gain error
(7)(8)
-12.7
15.5
E
O+G
Offset + gain error
(5)(9)
-16.7
18.8
E
O+G
Offset + gain error
(7)(10)
-19.2
18.8
|E
D
|
Differential linearity error
(4)(5)(6)
0.5
|E
L
|
Integral linearity error
(4)(5)(6)
1.4



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