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STM32F103RBH7TR 데이터시트(Datasheet) 69 Page - STMicroelectronics

부품명 STM32F103RBH7TR
상세내용  Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
PDF  92 Pages
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제조사  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM32F103x8, STM32F103xB
Electrical characteristics
Doc ID 13587 Rev 11
69/92
Equation 1: RAIN max formula:
The formula above (Equation 1) is used to determine the maximum external impedance allowed for an
error below 1/4 of LSB. Here N = 12 (from 12-bit resolution).
Table 46.
RAIN max for fADC = 14 MHz
(1)
1.
Based on characterization, not tested in production.
Ts (cycles)
tS (µs)
RAIN max (k)
1.5
0.11
0.4
7.5
0.54
5.9
13.5
0.96
11.4
28.5
2.04
25.2
41.5
2.96
37.2
55.5
3.96
50
71.5
5.11
NA
239.5
17.1
NA
Table 47.
ADC accuracy - limited test conditions(1) (2)
1.
ADC DC accuracy values are measured after internal calibration.
2.
ADC Accuracy vs. Negative Injection Current: Injecting negative current on any of the standard (non-
robust) analog input pins should be avoided as this significantly reduces the accuracy of the conversion
being performed on another analog input. It is recommended to add a Schottky diode (pin to ground) to
standard analog pins which may potentially inject negative current.
Any positive injection current within the limits specified for IINJ(PIN) and IINJ(PIN) in Section 5.3.12 does not
affect the ADC accuracy.
Symbol
Parameter
Test conditions
Typ
Max(3)
3.
Based on characterization, not tested in production.
Unit
ET
Total unadjusted error
fPCLK2 = 56 MHz,
fADC = 14 MHz, RAIN < 10 k,
VDDA = 3 V to 3.6 V
TA = 25 °C
Measurements made after
ADC calibration
±1.3
±2
LSB
EO
Offset error
±1
±1.5
EG
Gain error
±0.5
±1.5
ED
Differential linearity error
±0.7
±1
EL
Integral linearity error
±0.8
±1.5
R
AIN
T
S
f
ADC
C
ADC
2
N2
+

ln
--------------------------------------------------------------
R
ADC




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