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参数资料
| 型号： | MPL115A1T2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC BAROMETER SPI DGTL MINI 8LGA |
| 标准包装： | 5,000 |
| 压力类型： | 绝对 |
| 工作压力： | 7.2 PSI ~ 16.6 PSI，50 ~ 115 kPa |
| 输出： | 数字 |
| 精确度： | ±1% |
| 电源电压： | 2.375 V ~ 5.5 V |
| 端接类型： | PCB |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 8-TLGA |
Example Binary Format Definitions:
a0 Signed, Integer Bits = 12, Fractional Bits = 3 :
b1 Signed, Integer Bits = 2, Fractional Bits = 13 :
b2 Signed, Integer Bits = 1, Fractional Bits = 14 :
c12 Signed, Integer Bits = 0, Fractional Bits = 13, dec pt zero pad = 9 :
Padc Unsigned, Integer Bits = 10 :
Tadc Unsigned, Integer Bits =10 :
Coeff a0 = S I 11 I 10 I 9 I 8 I 7 I 6 I 5 I 4 I 3 I 2 I 1 I 0 . F 2 F 1 F 0
Coeff b1 = S I 1 I 0 . F 12 F 11 F 10 F 9 F 8 F 7 F 6 F 5 F 4 F 3 F 2 F 1 F 0
Coeff b2 = S I 0 . F 13 F 12 F 11 F 10 F 9 F 8 F 7 F 6 F 5 F 4 F 3 F 2 F 1 F 0
Coeff c12 = S 0 . 000 000 000 F 12 F 11 F 10 F 9 F 8 F 7 F 6 F 5 F 4 F 3 F 2 F 1 F 0
Padc U = I 9 I 8 I 7 I 6 I 5 I 4 I 3 I 2 I 1 I 0
Tadc U = I 9 I 8 I 7 I 6 I 5 I 4 I 3 I 2 I 1 I 0
NOTE: Negative coefficients are coded in 2’s complement notation.
3.2
Compensation
The 10-bit compensated pressure output, Pcomp, is calculated as follows:
Pcomp = a0 + ( b1 + c12 ? Tadc ) ? Padc + b2 ? Tadc
Eqn. 1
Where:
Padc is the 10-bit pressure ADC output of the MPL115A
Tadc is the 10-bit temperature ADC output of the MPL115A
a0 is the pressure offset coefficient
b1 is the pressure sensitivity coefficient
b2 is the temperature coefficient of offset (TCO)
c12 is the temperature coefficient of sensitivity (TCS)
Pcomp will produce a value of 0 with an input pressure of 50 kPa and will produce a full-scale value of 1023 with an input pressure
of 115 kPa.
---------------------- + 50
Pressure (kPa) = P comp
?
115 – 50
1023
Eqn. 2
3.3
Evaluation Sequence, Arithmetic Circuits
The following is an example of the calculation for Pcomp, the compensated pressure output. Input values are in bold.
c12x2 = c12 * Tadc
a1 = b1 + c12x2
a1x1 = a1 * Padc
y1 = a0 + a1x1
a2x2 = b2 * Tadc
Pcomp = y1 + a2x2
This can be calculated as a succession of Multiply Accumulates (MACs) operations of the form y = a + b * x:
a
b
X
+
y
x
MPL115A1
Sensors
6
Freescale Semiconductor, Inc.
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相关代理商/技术参数 |
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|---|---|
| MPL115A2 | 功能描述:板上安装压力/力传感器 12C VERSION PEGASUS RoHS:否 制造商:Honeywell 工作压力:0 bar to 4 bar 压力类型:Gage 准确性:+ / - 0.25 % 输出类型:Digital 安装风格:Through Hole 工作电源电压:5 V 封装 / 箱体:SIP 端口类型:Dual Radial Barbed, Same sides |
| MPL115A2 | 制造商:Freescale Semiconductor 功能描述:IC MINI I2C DIGITAL BAROMETER 50 to 11 |
| MPL115A2_10 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Miniature I2C Digital Barometer |
| MPL115A2_13 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Miniature I2C Digital Barometer |
| MPL115A2T1 | 功能描述:板上安装压力/力传感器 Miniature I2C Digital Barometer RoHS:否 制造商:Honeywell 工作压力:0 bar to 4 bar 压力类型:Gage 准确性:+ / - 0.25 % 输出类型:Digital 安装风格:Through Hole 工作电源电压:5 V 封装 / 箱体:SIP 端口类型:Dual Radial Barbed, Same sides |
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