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| 型号： | MMA6556KW |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 42/53页 |
| 文件大小： | 0K |
| 描述： | IC ACCELEROMETER X AXIS 16QFN |
| 标准包装： | 75 |
| 轴： | X |
| 加速范围： | ±120g |
| 灵敏度： | 16 LSB/g |
| 电源电压： | 3.13 V ~ 5.25 V |
| 输出类型： | SPI |
| 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-EP（6x6） |
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3.11
3.11.1
Overload Response
Overload Performance
The device is designed to operate within a specified range. Acceleration beyond that range (overload) impacts the output of
the sensor. Acceleration beyond the range of the device can generate a DC shift at the output of the device that is dependent
upon the overload frequency and amplitude. The g-cell is overdamped, providing the optimal design for overload performance.
However, the performance of the device during an overload condition is affected by many other parameters, including:
? g-cell damping
? Non-linearity
? Clipping limits
? Symmetry
Figure 34 shows the g-cell, ADC and output clipping of the device over frequency. The relevant parameters are specified in
Section 2.1 , and Section 2.6 .
Acceleration (g)
g-cell Rolloff
g-ce
ped
Clip
Reg
due rity
d by
stor n-Line
l Di
lipp
o
of S etry an
egio
gion ymm
Re
g g-cell_Clip
g ADC_Clip
Region Clipped
by Output
LPF Rolloff
R
ion
by
e
As
ll
ADC tion a
nC igna dN
to
Determined by g-cell
roll-off and ADC clipping
Determined by g-cell
roll-off and full scale range
g Range_Norm
Region of Interest
Region of No Signal Distortion Beyond
Specification
f LPF
f g-Cell
5kHz
10kHz
Frequency (kHz)
Figure 34. Output Clipping vs. Frequency
3.11.2
Sigma Delta Over Range Response
Over range conditions exist when the signal level is beyond the full-scale range of the device but within the computational limits
of the DSP. The ΣΔ converter can saturate at levels above those specified in Section 2.1 (G ADC_CLIP ). The DSP operates pre-
dictably under all cases of over range, although the signal may include residual high frequency components for some time after
returning to the normal range of operation due to non-linear effects of the sensor.
MMA655x
Sensor
42
Freescale Semiconductor, Inc.
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| MMA6556KWR2 | 功能描述:加速计 - 板上安装 X-AXIS 120G 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 |
| MMA65XX | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Dual-Axis SPI Inertial Sensor |
| MMA6700AEGR2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC |
| MMA6700EG | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC |
| MMA6700EGR2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC |
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