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參數(shù)資料
| 型號： | MPC5602DCLH |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 48 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, MS-026BCD, LQFP-64 |
| 文件頁數(shù)： | 48/77頁 |
| 文件大?。?/td> | 686K |
| 代理商： | MPC5602DCLH |
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MPC5602D Microcontroller Data Sheet, Rev. 3.1
Preliminary—Subject to Change Without Notice
Electrical characteristics
Freescale Semiconductor
52
4.17
ADC electrical characteristics
4.17.1
Introduction
The device provides a 12-bit Successive Approximation Register (SAR) analog-to-digital converter.
Figure 11. ADC characteristic and error definitions
4.17.2
Input impedance and ADC accuracy
In the following analysis, the input circuit corresponding to the precise channels is considered.
To preserve the accuracy of the A/D converter, it is necessary that analog input pins have low AC impedance. Placing a capacitor
with good high frequency characteristics at the input pin of the device can be effective: the capacitor should be as large as
(2)
(1)
(3)
(4)
(5)
Offset Error OSE
Gain Error GE
1 LSB (ideal)
Vin(A) (LSBideal)
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) Differential non-linearity error (DNL)
(4) Integral non-linearity error (INL)
(5) Center of a step of the actual transfer curve
code out
1023
1022
1021
1020
1019
1018
5
4
3
2
1
0
7
6
1
2
3
4
5
6
7
1017 1018 1019 1020 1021 1022 1023
1 LSB ideal = VDD_ADC / 1024
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