Datasheet ADXL325 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Small, Low Power, 3-Axis ±5 g Accelerometer |
| Pages / Page | 17 / 4 — ADXL325. SPECIFICATIONS. Table 1. Parameter Conditions. Min. Typ. Max. … |
| File Format / Size | PDF / 283 Kb |
| Document Language | English |
ADXL325. SPECIFICATIONS. Table 1. Parameter Conditions. Min. Typ. Max. Unit
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ADXL325 SPECIFICATIONS
TA = 25°C, VS = 3 V, CX = CY = CZ = 0.1 μF, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed.
Table 1. Parameter Conditions Min Typ Max Unit
SENSOR INPUT Each axis Measurement Range ±5 ±6 g Nonlinearity Percent of full scale ±0.2 % Package Alignment Error ±1 Degrees Interaxis Alignment Error ±0.1 Degrees Cross-Axis Sensitivity1 ±1 % SENSITIVITY (RATIOMETRIC)2 Each axis Sensitivity at XOUT, YOUT, ZOUT VS = 3 V 156 174 192 mV/g Sensitivity Change Due to Temperature3 VS = 3 V ±0.01 %/°C ZERO g BIAS LEVEL (RATIOMETRIC) 0 g Voltage at XOUT, YOUT, ZOUT VS = 3 V 1.3 1.5 1.7 V 0 g Offset vs. Temperature ±1 mg/°C NOISE PERFORMANCE Noise Density XOUT, YOUT, ZOUT 250 μg/√Hz rms FREQUENCY RESPONSE4 Bandwidth X 5 OUT, YOUT No external filter 1600 Hz Bandwidth Z 5 OUT No external filter 550 Hz RFILT Tolerance 32 ± 15% kΩ Sensor Resonant Frequency 5.5 kHz SELF TEST6 Logic Input Low +0.6 V Logic Input High +2.4 V ST Actuation Current +60 μA Output Change at XOUT Self test 0 to 1 −90 −190 −350 mV Output Change at YOUT Self test 0 to 1 +90 +190 +350 mV Output Change at ZOUT Self test 0 to 1 +90 +320 +580 mV OUTPUT AMPLIFIER Output Swing Low No load 0.1 V Output Swing High No load 2.8 V POWER SUPPLY Operating Voltage Range 1.8 3.6 V Supply Current VS = 3 V 350 μA Turn-On Time7 No external filter 1 ms TEMPERATURE Operating Temperature Range −40 +85 °C 1 Defined as coupling between any two axes. 2 Sensitivity is essentially ratiometric to VS. 3 Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature. 4 Actual frequency response controlled by user-supplied external filter capacitors (CX, CY, CZ). 5 Bandwidth with external capacitors = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.003 μF, bandwidth = 1.6 kHz. For CZ = 0.01 μF, bandwidth = 500 Hz. For CX, CY, CZ = 10 μF, bandwidth = 0.5 Hz. 6 Self test response changes cubically with VS. 7 Turn-on time is dependent on CX, CY, CZ and is approximately 160 × CX or CY or CZ + 1 ms, where CX, CY, CZ are in μF. Rev. 0 | Page 3 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION MECHANICAL SENSOR PERFORMANCE APPLICATIONS INFORMATION POWER SUPPLY DECOUPLING SETTING THE BANDWIDTH USING CX, CY, AND CZ SELF TEST DESIGN TRADE-OFFS FOR SELECTING FILTER CHARACTERISTICS: THE NOISE/BW TRADE-OFF USE WITH OPERATING VOLTAGES OTHER THAN 3 V AXES OF ACCELERATION SENSITIVITY LAYOUT AND DESIGN RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE
ADXL325 SPECIFICATIONS
TA = 25°C, VS = 3 V, CX = CY = CZ = 0.1 μF, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed.
Table 1. Parameter Conditions Min Typ Max Unit
SENSOR INPUT Each axis Measurement Range ±5 ±6 g Nonlinearity Percent of full scale ±0.2 % Package Alignment Error ±1 Degrees Interaxis Alignment Error ±0.1 Degrees Cross-Axis Sensitivity1 ±1 % SENSITIVITY (RATIOMETRIC)2 Each axis Sensitivity at XOUT, YOUT, ZOUT VS = 3 V 156 174 192 mV/g Sensitivity Change Due to Temperature3 VS = 3 V ±0.01 %/°C ZERO g BIAS LEVEL (RATIOMETRIC) 0 g Voltage at XOUT, YOUT, ZOUT VS = 3 V 1.3 1.5 1.7 V 0 g Offset vs. Temperature ±1 mg/°C NOISE PERFORMANCE Noise Density XOUT, YOUT, ZOUT 250 μg/√Hz rms FREQUENCY RESPONSE4 Bandwidth X 5 OUT, YOUT No external filter 1600 Hz Bandwidth Z 5 OUT No external filter 550 Hz RFILT Tolerance 32 ± 15% kΩ Sensor Resonant Frequency 5.5 kHz SELF TEST6 Logic Input Low +0.6 V Logic Input High +2.4 V ST Actuation Current +60 μA Output Change at XOUT Self test 0 to 1 −90 −190 −350 mV Output Change at YOUT Self test 0 to 1 +90 +190 +350 mV Output Change at ZOUT Self test 0 to 1 +90 +320 +580 mV OUTPUT AMPLIFIER Output Swing Low No load 0.1 V Output Swing High No load 2.8 V POWER SUPPLY Operating Voltage Range 1.8 3.6 V Supply Current VS = 3 V 350 μA Turn-On Time7 No external filter 1 ms TEMPERATURE Operating Temperature Range −40 +85 °C 1 Defined as coupling between any two axes. 2 Sensitivity is essentially ratiometric to VS. 3 Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature. 4 Actual frequency response controlled by user-supplied external filter capacitors (CX, CY, CZ). 5 Bandwidth with external capacitors = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.003 μF, bandwidth = 1.6 kHz. For CZ = 0.01 μF, bandwidth = 500 Hz. For CX, CY, CZ = 10 μF, bandwidth = 0.5 Hz. 6 Self test response changes cubically with VS. 7 Turn-on time is dependent on CX, CY, CZ and is approximately 160 × CX or CY or CZ + 1 ms, where CX, CY, CZ are in μF. Rev. 0 | Page 3 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION MECHANICAL SENSOR PERFORMANCE APPLICATIONS INFORMATION POWER SUPPLY DECOUPLING SETTING THE BANDWIDTH USING CX, CY, AND CZ SELF TEST DESIGN TRADE-OFFS FOR SELECTING FILTER CHARACTERISTICS: THE NOISE/BW TRADE-OFF USE WITH OPERATING VOLTAGES OTHER THAN 3 V AXES OF ACCELERATION SENSITIVITY LAYOUT AND DESIGN RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE
