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參數(shù)資料
| 型號： | MSM65X227TS-K |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, EEPROM, 6 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, TQFP-100 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 142K |
| 代理商： | MSM65X227TS-K |
12/18
MSM65X227
Semiconductor
A/D converter characteristics
Resolution
n
(VDD = AVDD = VRH = 4.5 to 5.5V, GND = AGND = VRL = 0V, Ta = –40 to +85C)
Parameter
Symbol
Condition
Unit
Refer to the recommended circuit.
Analog input source impedance
RI 5kW
Typ.
Max.
—
8
Min.
—
Linearity Error
EL
bit
Differential Linearity Error
ED
Zero Scale Error
EZS
Full Scale Error
Crosstalk
ECT
EFS
Conversion Time*
tCONV
+1.5
—
LSB
–1.5
±0.5
—
LSB
+1.5
—
LSB
–1.5
—
LSB
±0.5
—
LSB
—
26.7
—
ms/CH
Refer to the measuring circuit.
fOSC = 6MHz
*
The conversion time immediately after G0 bit is set to "I" is 24.7
s/CH.
Resolution
Definition of Terms
Recognizable minimum input analog value.
This can be resolved into 28 = 256, that is (VRH – VRL) ÷ 256
Linearity Error
Deviation between ideal conversion characteristics as an 8-bit A/D converter
and actual conversion characteristics. (Not including quantization error.)
Ideal conversion characteristics means a step which divides voltage between
VRH and LRL into 256.
Differential Linearity Error
Shows the smoothness of conversion characteristics.
1LSB = (VRH – VRL) ÷ 256 is ideal for analog input voltage width corresponding
to change per 1 bit of digital output. The differential linearity error is the
deviation between this ideal bit size and a bit size at arbitrary point in
conversion range.
Zero Scale Error
Deviation between ideal conversion characteristics of transfer point for digital
outputs "000H" to "001H" and actual conversion characteristics.
Full Scale Error
Deviation between ideal conversion characteristics of transfer point for digital
outputs "0FEH" to "0FFH" and actual conversion characteristics.
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