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參數(shù)資料
| 型號： | MSM66Q579L-TB |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 28 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, TQFP-100 |
| 文件頁數(shù)： | 28/37頁 |
| 文件大?。?/td> | 327K |
| 代理商： | MSM66Q579L-TB |
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PEDL66579-03
1Semiconductor
MSM66579 Family
34/37
D/A Converter Characteristics
(VDD = 2.4 to 3.6 V/4.5 to 5.5 V, Ta = –30 to +70°C)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Resolution
n
—
8
Bit
Linearity error
E
L
——
1
Absolute precision
—
——
2
LSB
Conversion time
t
CONV
C
L = 50 pF
—
20
50
s
Analog output impedance
—
20
—
k
Definition of Terminology
1. Resolution
Resolution is the value of minimum discernible analog output.
With 8 bits, since 28 = 256, resolution of (VDD – GND) ÷ 256 is possible.
2. Linearity error
Linearity error is the difference between ideal conversion characteristics and actual conversion characteristics of
an 8-bit D/A converter.
Ideal conversion characteristics can be obtained by dividing the voltage between VDD and GND into 256 equal
steps.
3. Differential linearity error
Differential linearity error indicates the smoothness of conversion characteristics. Ideally, the range of analog
input voltage that corresponds to 1 converted bit of digital input is 1LSB = (VDD – GND) ÷ 256. Differential error
is the difference between this ideal bit size and bit size of an arbitrary point in the conversion range.
4. Absolute precision
Absolute precision is a gross error including a linearity error and the effect of noise.
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