收藏本站
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
MPL115A2
Sensors
6
Freescale Semiconductor, Inc.
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
KITMPVZ5004EVK KIT EVAL PRESSURE SENS BOARD
KN500B1/4 SWITCH KNOB STRAIGHT .50" BLACK
KN5700B1/4 SWITCH KNOB STRAIGHT .75" BLACK
KN700B1/4 SWITCH KNOB STRAIGHT .75" BLACK
KS-100 PROTECTIVE COVER FOR RELAYS
KTKK-0500 CONN HEAT SHRINK TUBE SZ 8 STR
KTKK-0674 CONN HEAT SHRINK TUBE SZ E STR
KTKK-1123 CONN HEAT SHRINK TUBE SZ D ANG
相关代理商/技术参数
KITMPR03XEVM 功能描述:光学传感器开发工具 CAPACITIVE 2-PAD TOUCH SENSOR CTRL RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度:
KITMPR083EVM 功能描述:光学传感器开发工具 8 POSITION ROTARY TOUCH RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度:
KITMPR084EVM 功能描述:光学传感器开发工具 8 TOUCH PADS RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度:
KITMPR121EVM 功能描述:触摸传感器开发工具 MPR121 Sensor Tool Box RoHS:否 制造商:Cypress Semiconductor 工具用于评估: 接口类型: 工作电压: 最大工作温度:
KITMPR121EVM 制造商:Freescale Semiconductor 功能描述:Sensor Toolbox Proximity Sensor Kit
KITMPVZ5004EVK 功能描述:压力传感器开发工具 WATER LEVEL BOARD RoHS:否 制造商:Freescale Semiconductor 工具用于评估:MPL3115A2 接口类型:USB 最大工作温度:
KITMPXA6115AEVB 功能描述:压力传感器开发工具 Sensor Toolbx Pressu Sensor Developmt brd RoHS:否 制造商:Freescale Semiconductor 工具用于评估:MPL3115A2 接口类型:USB 最大工作温度:
KITMPXSHOWEVK 功能描述:压力传感器开发工具 PRESSURE SHOWBOARD RoHS:否 制造商:Freescale Semiconductor 工具用于评估:MPL3115A2 接口类型:USB 最大工作温度: