MMA8453QT Freescale Semiconductor, MMA8453QT Datasheet - Page 9

• Manufacturer Part Number: MMA8453QT
• Description: Board Mount Accelerometers LOW G 3-AXIS DGTL ACCEL
• Manufacturer: Freescale Semiconductor

Specifications of MMA8453QT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 8 bit, 10 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.95 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C
• Shutdown: Yes
• Sensitivity: 256 count/g, 512 count/g, 1024 count/g
• Package / Case: QFN-16
• Output Type: Digital
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2
2.1
Table 2. Mechanical Characteristics @ VDD = 2.5 V, VDDIO = 1.8 V, T = 25°C unless otherwise noted.
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
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.
Sensors
Freescale Semiconductor
Measurement Range
Sensitivity
Sensitivity Accuracy
Sensitivity Change vs. Temperature
Zero-g Level Offset Accuracy
Zero-g Level Offset Accuracy Post Board Mount
Zero-g Level Change vs. Temperature
Self-test Output Change
ODR Accuracy
2 MHz Clock
Output Data Bandwidth
Output Noise
Output Noise Low Noise Mode
Operating Temperature Range
when changing from 800 Hz to any other data rate in the Normal, Low Noise + Low Power or High Resolution mode.
X
Y
Z
Mechanical and Electrical Specifications
Mechanical Characteristics
(2)
Parameter
(1)
(5)
(3)
(1)
(4)
Normal Mode ODR = 400 Hz
Normal Mode ODR = 400 Hz
FS[1:0] 2g, 4g, 8g
FS[1:0] 2g, 4g, 8g
Test Conditions
FS[1:0] set to 00
FS[1:0] set to 01
FS[1:0] set to 10
FS[1:0] set to 00
FS[1:0] set to 01
FS[1:0] set to 10
FS[1:0] set to 00
FS[1:0] set to 01
FS[1:0] set to 10
FS[1:0] set to 00
-40°C to 85°C
2g Mode
4g Mode
8g Mode
2g Mode
4g Mode
8g Mode
2g Mode
4g Mode
8g Mode
4g Mode
.
TyOffPBM
Symbol
TCOff
TCSo
Noise
Noise
TyOff
Soa
BW
Top
Vst
FS
So
ODR/3
Min
-40
±0.008
±0.15
+105
±2.5
Typ
+11
+16
126
256
128
±20
±30
±2
±4
±8
64
±2
99
ODR/2
Max
+85
MMA8453Q
counts/g
mg/°C
µg/√Hz
µg/√Hz
%/°C
Unit
LSB
mg
mg
Hz
°C
%
%
g
9