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参数资料
| 型号： | MMA7331LCR1 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 3/11页 |
| 文件大小： | 0K |
| 描述： | IC ACCELER 4G XYZ-AXIS 14LGA |
| 标准包装： | 1,000 |
| 轴： | X，Y，Z |
| 加速范围： | ±4g，9g |
| 灵敏度： | 308mV/g，83.6mV/g |
| 电源电压： | 2.2 V ~ 3.6 V |
| 输出类型： | 模拟 |
| 带宽： | 400Hz - XY，300Hz - Z |
| 接口： | 并联 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-VFLGA |
| 供应商设备封装： | 14-LGA（3x5） |
Table 2. Operating Characteristics
Unless otherwise noted: - 40°C < T A < 85°C, 2.2 V < V DD < 3.6 V, Acceleration = 0g, Loaded output (1)
Characteristic
Symbol
Min
Typ
Max
Unit
Operating Range (2)
Supply Voltage (3)
Supply Current (4)
Supply Current at Sleep Mode (4)
Operating Temperature Range
V DD
I DD
I DD
T A
2.2
—
—
-40
2.8
400
3
—
3.6
600
10
+85
V
μ A
μ A
°C
Acceleration Range, X-Axis, Y-Axis, Z-Axis
g-Select: 0
g-Select: 1
g FS
g FS
—
—
±4
±9
—
—
g
g
Output Signal
Zero g (T A = 25°C, V DD = 2.8 V) (5), (6)
XY
Z (7)
Zero g Temperature Coefficient (8)
X
Y
Z
V OFF
V OFF
TCO 4g
TCO 9g
TCO 9g
TCO 9g
1.316
1.45
-2
-12
-7.9
-8.4
1.4
1.4
±0.5
-6.4
-0.9
0
1.484
1.484
2
-0.6
5.2
8.5
V
V
mg/°C
mg/°C
mg/°C
mg/°C
Sensitivity (T A = 25°C, V DD = 2.8 V)
4g
9g
Sensitivity (4)
S 4g
S 9g
S,T A
289.5
75.2
-0.0075
308
83.6
±0.002
326.5
91.9
+0.0075
mV/g
mV/g
%/°C
Bandwidth Response
XY
Z
Output Impedance
f -3dBXY
f -3dBZ
Z O
—
—
24
400
300
32
—
—
40
Hz
Hz
k Ω
Self Test
Output Response
X OUT , Y OUT
Z OUT
Input Low
Input High
Δ g STXY
Δ g STZ
V IL
V IH
+0.05
+0.5
V SS
0.7 V DD
-0.1
+1.75
—
—
—
+3.0
0.3 V DD
V DD
g
g
V
V
Noise
Power Spectral Density RMS (0.1 Hz – 1 kHz) (4)
n PSD
—
350
—
μ g/ Hz
Control Timing
Power-Up Response Time (9)
Enable Response Time (10)
Self Test Response Time (11)
t RESPONSE
t ENABLE
t ST
—
—
—
1.0
0.5
2.0
2.0
2.0
5.0
ms
ms
ms
Sensing Element Resonant Frequency
XY
Z
Internal Sampling Frequency
f GCELLXY
f GCELLZ
f CLK
—
—
—
6.0
3.4
11
—
—
—
kHz
kHz
kHz
Output Stage Performance
Full-Scale Output Range (I OUT = 3 μA)
Nonlinearity, X OUT , Y OUT , Z OUT
Cross-Axis Sensitivity (12)
V FSO
NL OUT
V XY, XZ, YZ
V SS +0.1
-1.0
-5.0
—
—
—
V DD –0.1
+1.0
+5.0
V
%FSO
%
1. For a loaded output, the measurements are observed after an RC filter consisting of an internal 32 k Ω resistor and an external 3.3 nF capacitor
(recommended as a minimum to filter clock noise) on the analog output for each axis and a 0.1 μ F capacitor on V DD - GND. The output sensor
bandwidth is determined by the Capacitor added on the output. f = 1/2 π * (32 x 10 3 ) * C. C = 3.3 nF corresponds to BW = 1507 Hz, which is the minimum
to filter out internal clock noise.
2. These limits define the range of operation for which the part will meet specification.
3. Within the supply range of 2.2 and 3.6 V, the device operates as a fully calibrated linear accelerometer. Beyond these supply limits the device may
operate as a linear device but is not guaranteed to be in calibration.
4. This value is measured with g-Select in 4g mode.
5. The device can measure both + and – acceleration. With no input acceleration the output is at midsupply. For positive acceleration the output will
increase above V DD /2. For negative acceleration, the output will decrease below V DD /2.
6. For optimal 0g offset performance, adhere to AN3484 and AN3447.
7. Product performance will not exceed this minimum level, however, measurement over time will not be equal to time zero measurements for this specific
parameter.
8. X, Y, Z = 0g
9. The response time between 10% of full scale V DD input voltage and 90% of the final operating output voltage.
10. The response time between 10% of full scale Sleep Mode input voltage and 90% of the final operating output voltage.
11. The response time between 10% of the full scale self test input voltage and 90% of the self test output voltage.
12. A measure of the device’s ability to reject an acceleration applied 90° from the true axis of sensitivity.
MMA7331LC
Sensors
Freescale Semiconductor
3
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| MMA7331LT | 功能描述:加速计 - 板上安装 4G XYZ LGA 14 LEAD 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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