MMA8451QT(2010) 데이터 시트보기 (PDF) - Freescale Semiconductor
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MMA8451QT Datasheet PDF : 53 Pages
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2
Mechanical and Electrical Specifications
2.1 Mechanical Characteristics
Table 2. Mechanical Characteristics @ VDD = 2.5 V, VDDIO = 1.8 V, T = 25°C unless otherwise noted.
Parameter
Test Conditions
Symbol Min Typ Max
Unit
FS[1:0] set to 00
±2
2g Mode
Measurement Range(1)
FS[1:0] set to 01
FS
±4
g
4g Mode
Sensitivity
FS[1:0] set to 10
8g Mode
FS[1:0] set to 00
2g Mode
FS[1:0] set to 01
So
4g Mode
FS[1:0] set to 10
8g Mode
±8
4096
2048
1024
counts/g
Sensitivity Accuracy(2)
Sensitivity Change vs. Temperature
FS[1:0] set to 00
2g Mode
FS[1:0] set to 01
4g Mode
Soa
TCSo
±2.5
±0.008
%
%/°C
FS[1:0] set to 10
8g Mode
Zero-g Level Offset Accuracy(3)
FS[1:0] 2g, 4g, 8g
TyOff
±20
mg
Zero-g Level Offset Accuracy Post Board Mount(4)
FS[1:0] 2g, 4g, 8g
TyOffPBM
±30
mg
Zero-g Level Change vs. Temperature
Non-Linearity
Best Fit Straight Line
Self-Test Output Change(5)
X
Y
Z
-40°C to 85°C
Over ±2g range
±8g range
FS[1:0] set to 0
4g Mode
TCOff
NL
Vst
±0.15
±0.2
±0.5
+181
+255
+1680
mg/°C
%FS
LSB
ODR Accuracy
2 MHz Clock
Output Data Bandwidth
Output Noise
Output Noise Low Noise Mode(1)
Operating Temperature Range
Normal Mode ODR = 400 Hz
Normal Mode ODR = 400 Hz
BW
Noise
Noise
Top
%
±2
ODR/3
ODR/2 Hz
126
µg/√Hz
99
µg/√Hz
-40
+85
°C
1. Dynamic Range is limited to 4g when the Low Noise bit in Register 0x2A, bit 2 is set.
2. Sensitivity remains in spec as stated, but changing Oversampling mode to Low Power causes 3% sensitivity shift. This behavior is also seen
when changing from 800 Hz to any other data rate in the Normal, Low Noise + Low Power or High Resolution mode.
3. Before board mount.
4. Post Board Mount Offset Specifications are based on an 8 Layer PCB, relative to 25°C.
5. Self-Test is one direction only.
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Freescale Semiconductor
MMA8451Q
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