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參數(shù)資料
| 型號： | MCP3302-CI/P |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 6/48頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 13BIT 2.7V 2CH SPI 14-DIP |
| 標準包裝： | 30 |
| 位數(shù)： | 13 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 14-DIP（0.300"，7.62mm） |
| 供應商設備封裝： | 14-PDIP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 4 個單端，單極；2 個差分，單極 |
| 產(chǎn)品目錄頁面： | 672 (CN2011-ZH PDF) |
| 其它名稱： | MCP3302CI/P |
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MCP3302/04
DS21697F-page 14
2011 Microchip Technology Inc.
3.7
Analog Ground (AGND)
Ground connection to internal analog circuitry. To
ensure accuracy, this pin must be connected to the
same ground as DGND. If an analog ground plane is
available, it is recommended that this device be tied to
the analog ground plane in the circuit. See
“Layout Considerations” for more information
regarding circuit layout.
3.8
Voltage Reference (VREF)
This input pin provides the reference voltage for the
device, which determines the maximum range of the
analog input signal and the LSB size.
The LSB size is determined according to the equation
shown below. As the reference input is reduced, the
LSB size is reduced accordingly.
EQUATION 3-1:
When using an external voltage reference device, the
system designer
should
always
refer
to
the
manufacturer’s recommendations for circuit layout.
Any instability in the operation of the reference device
will have a direct effect on the accuracy of the ADC
conversion results.
3.9
Power Supply (VDD)
The device can operate from 2.7V to 5.5V, but the data
conversion performance is from 4.5V to 5.5V supply
range. To ensure accuracy, a 0.1 F ceramic bypass
capacitor should be placed as close as possible to the
pin. See
more information regarding circuit layout.
LSB Size =
2 x VREF
8192
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