HTS-IMU-LP2 Inertial Measurement Unit is a small, tactical grade, ten degrees of freedom inertial measurement unit based on MEMS technology, which includes a triaxis gyroscope, a triaxis accelerometer, triaxis magntometer, and pressure senor. This IMU uses flexible connection technology, built-in full temperature compensation, installation misalignment angle compensation, nonlinear compensation and other compensation algorithms, and can output stable and reliable measurement data for users after error compensation under static, dynamic and harsh conditions.
The HTS-IMU-LP2 inertial measurement unit adopts the advanced domestic MEMS components, it can effectively reduce the cost. The HTS-IMU-LP2 features with high stability, compact size and light weight. The HTS-IMU-LP2 inertial measurement unit is packaged in a module that is approximately 47 mm × 44 mm × 14 mm and includes a standard connector interface.
Features:
Triaxial, digital gyroscope, ±450°/sec dynamic range
±0.05° orthogonal alignment error, 4.0°/hr in-run bias stability, 0.26°/√hr angular random walk, 0.01% nonlinearity
Triaxial, digital accelerometer, ±18 g
Triaxial, delta angle and delta velocity outputs
Triaxial, digital magnetometer, ±2.5 gauss
Digital pressure sensor, 300 mbar to 1100 mbar
Factory-calibrated sensitivity, bias, and axial alignment
Operating and calibration temperature range: −45°C to +85°C
SPI-compatible serial interface
Programmable operation and control
4 FIR filter banks, 120 configurable taps
Digital input/output: data-ready alarm indicator, optional external sample clock up to 2.4 kHz
Alarms for condition monitoring
Single-supply operation: 3.0 V to 3.6 V
10000 g shock survivability
Performance Characteristics
TC = 25°C, VDD = 3.3 V, angular rate = 0°/sec, dynamic range = ±450°/sec , ± 1 g, 300 mbar to 1100 mbar, unless otherwise noted.
|
Parameter |
Test Conditions/Comments |
Min Typ Max |
Unit |
|
GYROSCOPES |
|
|
|
|
Dynamic Range |
|
±450 ±510 |
°/sec |
|
Sensitivity |
x_GYRO_OUT and x_GYRO_LOW (32-bit) |
3.05 ×10-7 |
LSB/°/sec |
|
Repeatability1 |
−45°C ≤ TC ≤ +85°C |
0.02 |
% |
|
Sensitivity Temperature Coefficient |
−45°C ≤ TC ≤ +85°C, 1 σ |
±10 |
ppm/°C |
|
Misalignment |
Axis to axis |
±0.03 |
Degrees |
|
Axis to frame (package) |
±0.03 |
Degrees |
|
|
Nonlinearity |
Best fit straight line, FS = 450°/sec |
0.01 |
% of FS |
|
Bias Repeatability1, 2 |
−45°C ≤ TC ≤ +85°C, 1 σ |
0.016 |
°/sec |
|
In-Run Bias Stability |
1 σ |
4.0 |
°/h |
|
Angular Random Walk |
1 σ |
0.26 |
°/√h |
|
Bias Temperature Coefficient |
−45°C ≤ TC ≤ +85°C, 1 σ |
±0.00025 |
°/sec/°C |
|
Linear Acceleration Effect on Bias |
Any axis, 1 σ |
0.003 |
°/sec/g |
|
Output Noise |
No filtering |
0.1 |
°/sec rms |
|
Rate Noise Density |
f = 10 Hz to 40 Hz, no filtering |
0.0049 |
°/sec/√Hz rms |
|
3 dB Bandwidth |
330 |
Hz |
|
|
Sensor Resonant Frequency |
22 |
kHz |
|
|
ACCELEROMETERS |
Each axis |
|
|
|
Dynamic Range |
±18 ±20 |
g |
|
|
Sensitivity |
x_ACCL_OUT and x_ACCL_LOW (32-bit) |
1.221 ×10-7 |
g/ LSB |
|
Repeatability1 |
−45°C ≤ TC ≤ +85°C |
±0.02 |
% |
|
Sensitivity Temperature Coefficient |
−45°C ≤ TC ≤ +85°C, 1 σ |
±5 |
ppm/°C |
|
Misalignment |
Axis to axis |
±0.06 |
Degrees |
|
Axis to frame (package) |
±0.06 |
Degrees |
|
|
Nonlinearity |
Best fit straight line, ±10 g |
0.05 |
% of FS |
|
Best fit straight line, ±18 g |
0.08 |
% of FS |
|
|
Bias Repeatability1, 2, 3 |
−45°C ≤ TC ≤ +85°C, 1 σ |
5 |
mg |
|
In-Run Bias Stability |
1 σ |
0.01 |
mg |
|
Velocity Random Walk |
1 σ |
0.007 |
m/sec/√hr |
|
Bias Temperature Coefficient |
−45°C ≤ TC ≤ +85°C |
±0.025 |
mg/°C |
|
Output Noise |
No filtering |
1 |
mg rms |
|
Noise Density |
f = 10 Hz to 40 Hz, no filtering |
0.088 |
mg/√Hz rms |
|
3 dB Bandwidth |
330 |
Hz |
|
|
Sensor Resonant Frequency |
5.5 |
kHz |
|
|
MAGNETOMETER |
|||
|
Dynamic Range |
±2.5 |
gauss |
|
|
Sensitivity |
0.1 |
mgauss/LSB |
|
|
Initial Sensitivity Tolerance Sensitivity Temperature Coefficient |
HTS-IMU-LP2, −45°C≤ TC ≤ +85°C |
±2 60 |
% ppm/°C |
|
Misalignment |
1 σ Axis to axis |
0.35 |
Degrees |
|
Axis to frame (package) |
1.0 |
Degrees |
|
|
Nonlinearity |
Best fit straight line |
0.5 |
% of FS |
|
Initial Bas Error |
0 gauss stimulus |
±15 |
mgauss |
|
Bias Temperature Coefficient |
−45°C ≤ TC ≤ +85°C |
0.03 |
mgauss/°C |
|
Output Noise |
1 σ No filtering |
0.22 |
mgauss rms |
|
Noise Density |
f = 2 Hz to 5 Hz, no filtering |
0.042 |
mgauss/√Hz |
|
3 dB Bandwidth |
330 |
Hz |
|
|
BAROMETER |
|||
|
Pressure Range |
|
300 1100 |
mbar |
|
Extend |
10 1200 |
mbar |
|
|
Sensitivity |
BAROM_OUT and BAROM_LOW (32-bit) |
6.1 ×10-7 |
Mbar/LBS |
|
Total Error |
|
4.5 |
mbar |
|
Relative Error-4 |
−45°C ≤ TC ≤ +85°C |
2.5 |
mbar |
|
Nonlinearity5 |
Best fit straight line, FS= 1100 mbar |
0.1 |
% of FS |
|
−45°C ≤ TC ≤ +85°C |
0.2 |
% of FS |
|
|
Linear-g Sensitivity |
±1g, 1 σ |
0.005 |
|
|
TEMPERATURE SENSOR |
|
|
|
|
Scale Factor |
Output = 0x0000 at 25°C (±5°C) |
0.00565 |
°C/LSB |
|
LOGIC INPUTS6 |
|
|
|
|
Input High Voltage, VIH |
|
2.0 |
V |
|
Parameter |
Test Conditions/Comments |
Min Typ Max |
Unit |
|
Input Low Voltage, VIL |
|
0.8 |
V |
|
Logic 1 Input Current, IIH |
VIH = 3.3 V |
10 |
µA |
|
Logic 0 Input Current, IIL |
VIL =0 V |
|
|
|
All Pins Except RST and CS |
10 |
µA |
|
|
RST and CS Pins7 |
0.33 |
mA |
|
|
Input Capacitance, CIN |
10 |
pF |
|
|
DIGITAL OUTPUTS |
|
|
|
|
Output High Voltage, VOH |
ISOURCE = 0.5 mA |
2.4 |
V |
|
Output Low Voltage, VOL |
ISINK = 2.0 mA |
0.4 |
V |
|
FLASH MEMORY |
Endurance8 |
100,000 |
Cycles |
|
Data Retention9 |
TJ = 85°C |
20 |
Years |
|
FUNCTIONAL TIMES10 |
Time until data is available |
|
|
|
Power-On Start-Up Time |
1000 |
ms |
|
|
Reset Recovery Time11 |
500 |
ms |
|
|
Flash Memory |
|
|
|
|
Update Time |
375 |
ms |
|
|
Test Time |
50 |
ms |
|
|
CONVERSION RATE |
2.46 |
kSPS |
|
|
Initial Clock Accuracy |
0.01 |
% |
|
|
Temperature Coefficient |
20 |
ppm/°C |
|
|
Sync Input Clock |
0.712 2.4 |
kHz |
|
|
POWER SUPPLY, VDD Power Supply Current13 |
Operating voltage range Normal mode, VDD = 3.3 V, µ ± σ |
3.0 3.6 60 |
V mA |
|
POWER SUPPLY, VDD Real-Time Clock Supply Current |
Operating voltage range Normal mode, VDD = 3.3 V |
3.0 3.6 13 |
V µA |
Dimension & Drawing
