ADXL357 Ver la hoja de datos (PDF) - Analog Devices
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ADXL357 Datasheet PDF : 42 Pages
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Data Sheet
ADXL356/ADXL357
Parameter
Standby Mode
VSUPPLY
V1P8ANA
V1P8DIG
Turn On Time9
OUTPUT AMPLIFIER
Swing
Output Series Resistance
TEMPERATURE SENSOR
Output at 25°C
Scale Factor
TEMPERATURE
Operating Temperature Range
Test Conditions/Comments
LDO regulator enabled
LDO regulator disabled
LDO regulator disabled
10 g range
Power-off to standby
XOUT, YOUT, ZOUT, and TEMP pins
No load
Min Typ
21
7
10
<10
<10
0.03
32
967
3.0
−40
Max
Unit
μA
μA
μA
ms
ms
V1P8ANA − 0.03 V
kΩ
mV
mV/°C
+125
°C
1 The resonant frequency is a sensor characteristic.
2 Repeatability is predicted for a 10 year life and includes shifts due to the high temperature operating life (HTOL) (TA = 150°C, VSUPPLY = 3.6 V, and 1000 hours),
temperature cycling (−55°C to +125°C and 1000 cycles), velocity random walk, broadband noise, and temperature hysteresis. Repeatability in relation to time follows
the square root law. For example, to obtain offset repeatability of the x-axis for 2.5 years, use the following equation: ±4.25 mg × √(2.5 years/10 years) = ±2.125 mg.
3 The temperature change is −40°C to +25°C, or +25°C to +125°C.
4 The VRE measurement is the shift in dc offset while the device is subject to 7.5 g rms of random vibration from 50 Hz to 2 kHz. The device under test (DUT) is
configured for the ±10 g range and an output data rate of 4 kHz. The VRE scales with the range setting.
5 Based on characterization.
6 Overall transfer function includes the sensor mechanical response and all other filters on the signal chain.
7 ±10 g indicates a test condition. The self test result converted to the acceleration value is independent of the selected range.
8 When V1P8ANA and V1P8DIG are generated internally, VSUPPLY is valid. To disable the LDO regulator and drive V1P8ANA and V1P8DIG externally, connect VSUPPLY to VSS.
9 Standby to measurement mode. This specification is valid when the output is within 5 mg of the final value.
DIGITAL OUTPUT FOR THE ADXL357
TA = 25°C, VSUPPLY = 3.3 V, x-axis acceleration and y-axis acceleration = 0 g, z-axis acceleration = 1 g, full-scale range = ±10 g, and output
data rate (ODR) = 500 Hz, unless otherwise noted. Note that multifunction pin names may be referenced only by their relevant function.
Table 2.
Parameter
SENSOR INPUT
Output Full Scale Range (FSR)
Test Conditions/Comments
Each axis
User selectable, supports three ranges
Nonlinearity
Cross Axis Sensitivity
SENSITIVITY1
X-Axis, Y-Axis, and Z-Axis Sensitivity
X-Axis, Y-Axis, and Z-Axis Scale Factor
Sensitivity Change due to Temperature
Repeatability2
0 g OFFSET
X-Axis, Y-Axis, and Z-Axis 0 g Output
0 g Offset vs. Temperature (X-Axis, Y-Axis, and
Z-Axis)3
±10 g
±40 g
Each axis
±10 g
±20 g
±40 g
±10 g
±20 g
±40 g
TA = −40°C to +125°C
X-axis and y-axis
Z-axis
Each axis, ±10 g
TA = −40°C to +125°C
Min Typ Max Unit
±10,
g
±20,
±40
0.1
% FSR
1.3
% FSR
1
%
47,104
23,552
11,776
51,200
25,600
12,800
19.5
39
78
±0.01
0.1
0.2
55,296
27,648
13,824
LSB/g
LSB/g
LSB/g
μg/LSB
μg/LSB
μg/LSB
%/°C
%
%
−375 ±125 +375 mg
−0.75 ±0.20 +0.75 mg/°C
Rev. A | Page 5 of 42
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