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| 型号： | MCP3427-E/MF |
| 厂商： | Microchip Technology |
| 文件页数： | 28/56页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT I2C PROGBL 10-DFN |
| 产品培训模块： | MCP3901 Analog Front End |
| 标准包装： | 120 |
| 位数： | 16 |
| 采样率（每秒）： | 15 |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN-EP（3x3） |
| 包装： | 管件 |
| 输入数目和类型： | 2 个差分，单极 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
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MCP3426/7/8
DS22226A-page 34
2009 Microchip Technology Inc.
Figure 6-7 shows an example of measuring both
pressure and temperature. The pressure is measured
by using NPP 301 (manufactured by GE NovaSensor),
and temperature is measured by a thermistor. The
pressure sensor output is 20 mV/V. This gives 100 mV
of full scale output for VDD of 5V (sensor excitation
voltage). Equation 6-3 shows an example of calculating
the number of output code for the full scale output of the
NPP301.
EQUATION 6-3:
EXPECTED NUMBER OF
OUTPUT CODE FOR
NPP301 PRESSURE
SENSOR
The thermistor temperature sensor can measure the
temperature range from -100°C to +300°C. The
resistance of the thermistor sensor decreases as
temperature
increases
(negative
temperature
forms a voltage divider with R1.
The thermistor sensor is simple to use and widely used
for the temperature measurement applications. It has
both linear and non-linear responses over temperature
range. R1 is used to adjust the linear region of interest
for measurement.
Expected
log
2
100 mV
62.5
μV
PGA
------------------
---------------------
= 10.6 bits for PGA = 1
= 11.6 bits for PGA = 2
= 12.6 bits for PGA = 4
= 13.6 bits for PGA = 8
Number of Output Code =
Where:
1 LSB
=
62.5 V with 16 Bit configuration.
1600
PGA
()
ln
2
()
ln
----------------------------------------
=
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相关代理商/技术参数 |
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|---|---|
| MCP3427-EMS | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| MCP3427-ESL | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| MCP3427-ESN | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| MCP3427-EST | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| MCP3427-EUN | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference |
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