Datasheet ADXL337 (Analog Devices) - 4

link to page 17 link to page 17 link to page 17 link to page 17 link to page 17 link to page 4 link to page 4 link to page 17 link to page 17 link to page 17 ADXL337 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 Test Conditions/Comments Min Typ Max Unit
SENSOR INPUT Each axis Measurement Range ±3 ±3.6 g Nonlinearity % of full scale ±0.3 % 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 270 300 330 mV/g Sensitivity Change Due to Temperature3 VS = 3 V ±0.01 %/°C 0 g BIAS LEVEL (RATIOMETRIC) 0 g Voltage at XOUT, YOUT VS = 3 V 1.35 1.5 1.65 V 0 g Voltage at ZOUT VS = 3 V 1.2 1.5 1.8 V 0 g Offset vs. Temperature XOUT, YOUT ±1.1 mg/°C 0 g Offset vs. Temperature ZOUT ±1.6 mg/°C NOISE PERFORMANCE Noise Density XOUT, YOUT 175 μg/√Hz rms Noise Density ZOUT 300 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 −150 −325 −600 mV Output Change at YOUT Self test 0 to 1 +150 +325 +600 mV Output Change at ZOUT Self test 0 to 1 +150 +550 +1000 mV OUTPUT AMPLIFIER Output Swing Low No load 0.1 V Output Swing High No load 2.8 V POWER SUPPLY Operating Voltage Range7 1.8 3.0 3.6 V Supply Current VS = 3 V 300 μA Turn-On Time8 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 Tested at 3.0 V and guaranteed by design only (not tested) to work over the full range from 1.8 V to 3.6 V. 8 Turn-on time is dependent on CX, CY, CZ and is approximately 160 × (CX or CY or CZ) + 1, where CX, CY, and CZ are in μF and the resulting turn-on time is in ms. 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