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参数资料
| 型号： | MMA5248WR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 46/58页 |
| 文件大小： | 0K |
| 描述： | IC ACCELER 480G X-AXIS 16QFN |
| 标准包装： | 1,000 |
| 轴： | X |
| 加速范围： | ±480g |
| 灵敏度： | 8LSB/g，4LSB/g，2LSB/g，1LSB/g |
| 电源电压： | 4.2 V ~ 17 V |
| 输出类型： | 数字 |
| 带宽： | 400Hz |
| 接口： | SPI |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-QFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（6x6） |
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4.5.3
16-Bit Resolution Mode
The device can be programmed to respond in 16-bit Resolution Mode by setting the TRANS_MD[1:0] bits to “16-bit Resolution
Mode”. In this mode, the 26 bit digital output from the DSP is clipped and scaled to a 16-bit word. Figure 38 shows the method
used to establish the 16-bit data word from the 26 bit DSP output.
Over Range
Signal
Noise
Margin
D25 D24 D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
...
D2
D1
D0
16-bit Data Word
D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
Using Rounding
Figure 38. 16-Bit Output Scaling Diagram
16-Bit Resolution Mode can be programmed to operate in either “Simultaneous Sampling Mode”, or “Synchronous Sampling
Mode”, by setting the LATENCY bit to the desired operating mode. In Simultaneous Sampling Mode, the most recent interpolated
acceleration data sample is latched at t TRIG (rising edge of Sync Pulse). In Synchronous Sampling Mode, the most recent inter-
polated acceleration data sample is latched at the time programmed in TIMESLOTA[9:0], relative to t TRIG (rising edge of Sync
Pulse).
The most significant 10 bits (D[21:12]) are truncated and transmitted starting at the time programmed in TIMESLOTA[9:0], rel-
ative to t TRIG . The 16-bit value is then clipped to ±480 counts, and the least significant 10 bits (D15:D6) are transmitted starting
at the time programmed in TIMESLOTB[9:0], relative to t TRIG .
When 16-Bit Resolution Mode is enabled, PSI5 Initialization data is transmitted in both TIMESLOTA[9:0] and
TIMESLOTB[9:0]. Identical data is transmitted in both Time slots, including the 10-Bit Resolution Raw Offset and Self-Test Data
in Field 9, D27 though D31 if enabled.
t TIMESLOTA
t TIMESLOTB
≤ t LAT_INTERP + t DATASETUP_16
Figure 39. 16-Bit Resolution Mode with Synchronous Sampling
Note: In the event that the programmed values in TIMESLOTA [9:0] and TIMESLOTB [9:0] result in a conflict, no data will be
transmitted in TIMESLOTB [9:0] .
MMA52xxKW
Sensors
46
Freescale Semiconductor, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MMA52XXAKW | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Xtrinsic MMA52xxAKW PSI5 Inertial Sensor |
| MMA52XXKW | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PSI5 Inertial Sensor |
| MMA52XXWR2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PSI5 Inertial Sensor |
| MMA621010AEG | 功能描述:加速计 - 板上安装 100/100G XY ANALOG RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MMA621010AEGR2 | 功能描述:加速计 - 板上安装 100/100G XY ANALOG RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
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