Datasheet

MPL3115A2
Sensors
Freescale Semiconductor, Inc. 5
2 Mechanical and Electrical Specifications
2.1 Mechanical Characteristics
Table 2. Mechanical Characteristics @ V
DD
= 2.5 V, T = 25 °C unless otherwise noted
(1)
1. Measured at 25 °C, over 50 kPa to 110 kPa.
Ref Symbol Parameter Test Conditions Min Typ Max Unit
Pressure Sensor
1P
FS
Measurement Range
Calibrated Range 50 110 kPa
Operational Range 20 110 kPa
2 Pressure Reading Noise
1x Oversample
(2)
2. Oversample (OSR) modes internally combine and average samples to reduce noise.
19 Pa RMS
128x Oversample
(2)
1.5 Pa RMS
3 Pressure Absolute Accuracy
50 to 110 kPa
over 0 °C to 50 °C
-0.4 0.4
kPa
50 to 110 kPa
over -10 °C to 70 °C
±0.4
4 Pressure Relative Accuracy
Relative accuracy during
pressure change between
70 to 110 kPa at any constant
temperature between
-10 °C to 50 °C
±0.05
kPa
Relative accuracy during
changing temperature between
-10 °C to 50 °C at any constant
pressure between 50 kPa to
110 kPa
±0.1
5
Pressure/Altitude Resolution
(3)(4)(5)
3. Smallest bit change in register represents minimum value change in Pascals or meters. Typical resolution to signify change in altitude is 0.3 m.
4. At 128x Oversample Ratio.
5. Reference pressure = 101.325 kPa (Sea Level).
Barometer Mode 0.25 1.5 Pa
Altimeter Mode 0.0625 0.3 m
6 Output Data Rate
OST
(6)
Mode
6. OST = One Shot Mode.
100 Hz
FIFO Mode 1 Hz
Temperature Sensor
7T
FS
Measurement Range -40 +85 °C
8 Temperature Accuracy
@ 25 °C ±1
°C
Over Temperature Range ±3
9T
OP
Operating Temperature Range -40 +85 °C
10 Board Mount Drift After solder reflow ±0.15 kPa
11 Long Term Drift After a period of 1 year ±0.1 kPa