FEATURES
Hermetic package offers excellent long-term stability 0 g offset vs. temperature (all axes): 0.75 mg/°C maximum Ultralow noise density (all axes): 80 µg/√Hz
Low power, VSUPPLY (LDO enabled) ADXL356 in measurement mode: 150 µA
ADXL357 in measurement mode: 200 µA
ADXL356/ADXL357 in standby mode: 21 µA
ADXL356 has user adjustable analog output ban**idth
ADXL357 digital output features
Digital serial peripheral interface (SPI)/limited I2C interfaces supported
20-bit analog-to-digital converter (ADC)
Data interpolation routine for synchronous sampling Programmable high- and low-pass digital filters
Integrated temperature sensor
Voltage range options
VSUPPLY with internal regulators: 2.25 V to 3.6 V
V1P8ANA, V1P8DIG with internal low dropout (LDO) regulator bypassed: 1.8 V typical ± 10%
Operating temperature range: −40°C to +125°C 14-terminal, 6 mm × 5.6 mm × 2.05 mm, LCC package, 0.26 g
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Parameter |
Test Conditions/Comments |
Min |
Typ |
Max |
Unit |
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SENSOR INPUT |
Each axis |
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Output Full Scale Range (FSR) |
User selectable |
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±10.24 |
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g |
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±20.48 |
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g |
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±40.96 |
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g |
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Nonlinearity |
±10 g |
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0.1 |
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% FSR |
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Cross Axis Sensitivity |
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1 |
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% |
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SENSITIVITY |
Each axis |
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X-Axis, Y-Axis, and Z-Axis Sensitivity |
±10 g |
47,104 |
51,200 |
55,296 |
LSB/g |
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±20 g |
23,552 |
25,600 |
27,648 |
LSB/g |
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±40 g |
11,776 |
12,800 |
13,824 |
LSB/g |
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X-Axis, Y-Axis, and Z-Axis Scale Factor |
±10 g |
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19.5 |
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µg/LSB |
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±20 g |
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39 |
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µg/LSB |
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±40 g |
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78 |
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µg/LSB |
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Sensitivity Change due to Temperature |
TA = −40°C to +125°C |
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±0.01 |
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%/°C |
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0 g OFFSET |
Each axis, ±10 g |
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X-Axis, Y-Axis, and Z-Axis 0 g Output |
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−375 |
±125 |
+375 |
mg |
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0 g Offset vs.
Temperature (X-Axis, Y-Axis,
and Z-Axis)1 |
TA = −40°C to +125°C |
−0.75 |
±0.50 |
+0.75 |
mg/°C |
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Vibration Rectification Error (VRE) 2 |
Offset due to 7.5 g rms vibration, |
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<0.1 |
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g |
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±10 g range, in a 1 g orientation |
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NOISE DENSITY |
±10 g |
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X-Axis, Y-Axis, and Z-Axis |
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80 |
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µg/√Hz |
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Velocity Random Walk |
X-axis and y-axis |
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45 |
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µm/sec/√Hr |
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Z-axis |
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65 |
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µm/sec/√Hr |
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OUTPUT DATA RATE AND BANDWIDTH |
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ADC Resolution |
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20 |
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bits |
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Low-Pass Filter Passband Frequency |
User programmable, Register 0x28 |
1 |
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1000 |
Hz |
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High-Pass Filter Passband Frequency When Enabled |
User programmable, Register 0x28 |
0.0095 |
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10 |
Hz |
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(Disabled by Default) |
for 4 kHz ODR |
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SELF TEST |
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Output Change |
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Z-Axis |
±10 g range |
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1.25 |
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g |
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Data Sheet |
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ADXL356/ADXL357 |
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Parameter |
Test Conditions/Comments |
Min |
Typ |
Max |
Unit |
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POWER SUPPLY |
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Voltage Range |
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VSUPPLY Operating3 |
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2.25 |
2.5 |
3.6 |
V |
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VDDIO |
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V1P8DIG |
2.5 |
3.6 |
V |
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V1P8ANA and V1P8DIG with Internal LDO Bypassed |
VSUPPLY = 0 V |
1.62 |
1.8 |
1.98 |
V |
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Current |
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Measurement Mode |
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VSUPPLY (LDO Enabled) |
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200 |
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µA |
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V1P8ANA (LDO Disabled) |
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160 |
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µA |
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V1P8DIG (LDO Disabled) |
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35.5 |
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µA |
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Standby Mode |
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VSUPPLY (LDO Enabled) |
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21 |
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µA |
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V1P8ANA (LDO Disabled) |
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7 |
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µA |
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V1P8DIG (LDO Disabled) |
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10 |
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µA |
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Turn On Time4 |
±10 g range |
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<10 |
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ms |
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Power-off to standby |
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<10 |
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ms |
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TEMPERATURE SENSOR |
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Output at 25°C |
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1852 |
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LSB |
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Scale Factor |
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−9.05 |
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LSB/°C |
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TEMPERATURE |
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Operating Temperature Range |
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−40 |
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+125 |
°C |
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1 The temperature change is −40°C to +25°C or +25°C to +125°C.
2 The VRE measurement is the shift in dc offset while the device is subject to 12.5 g rms random vibration from 50 Hz to 2 kHz. The DUT is configured for the ±2 g range and an output data rate of 4 kHz. The VRE scales with the range setting.
3 When V1P8ANA and V1P8DIG are generated internally, VSUPPLY is valid. To disable the LDO and drive V1P8ANA and V1P8DIG externally, connect VSUPPLY to VSS.
4 Standby to measurement mode; valid when the output is within 1 mg of final value.
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