參數(shù)資料
型號: MC9328MXLCVP15
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
元件分類: 微處理器
英文描述: i.MX Integrated Portable System Processor
中文描述: i.MX處理器集成的便攜式系統(tǒng)
文件頁數(shù): 57/96頁
文件大小: 1495K
代理商: MC9328MXLCVP15
Specifications
MC9328MX1 Advance Information, Rev. 4
Freescale Semiconductor
57
3.11.3 Offset Calculations
The ideal mapping of input voltage to output digital sample is defined as:
Figure 36. Offset Calculations
In general, the mapping function is:
S = G * V + C
Where V is input, S is output, G is the slope, and C is the y-intercept.
Nominal Gain G
0
= 65535 / 4800 = 13.65mV
-1
Nominal Offset C
0
= 65535 / 2 = 32767
3.11.4 Gain Error Calculations
Gain error calculations are made using the information in this section.
Figure 37. Gain Error Calculations
Assuming the offset remains unchanged, the mapping is rotated around y-intercept to determine the maximum gain
allowed. This occurs when the sample at 1800mV has just reached the ceiling of the 16-bit range, 65535.
2400
1800
Smax
65535
C0
G0
Sample
Vi
-2400
2400
1800
Smax
65535
C0
G0
Sample
Vi
- 2400
Gmax
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