Datasheet ADXL212 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | Low Cost ±2g Dual Axis Accelerometer |
| Páginas / Página | 13 / 4 — ADXL212. SPECIFICATIONS. Table 1. Parameter Test. Conditions/Comments. … |
| Formato / tamaño de archivo | PDF / 282 Kb |
| Idioma del documento | Inglés |
ADXL212. SPECIFICATIONS. Table 1. Parameter Test. Conditions/Comments. Min. Typ. Max. Unit
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ADXL212 SPECIFICATIONS
TA = –40°C to +85°C, VS = 5 V, CX = CY = 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 Range1 ±1.5 ±2 g Nonlinearity Best fit straight line ±0.2 % of FS Package Alignment Error ±1 Degrees Alignment Error X sensor to Y sensor ±0.01 Degrees Cross Axis Sensitivity ±2 % SENSITIVITY (RATIOMETRIC)2 Each axis Sensitivity at XOUT, YOUT VS = 5 V 10 12.5 15 %/g Sensitivity Change Due to Temperature3 VS = 5 V ±0.5 % ZERO g BIAS LEVEL (RATIOMETRIC) Each axis 0 g Duty Cycle at XOUT, YOUT 25 50 75 % Initial 0 g Output Deviation from Ideal TA = 25°C ±2 % 0 g Duty Cycle vs. Supply 1.0 4.0 %/V 0 g Offset vs. Temperature ±2 mg/°C NOISE PERFORMANCE Noise Density TA = 25°C 500 1000 μg/√Hz rms FREQUENCY RESPONSE4 3 dB Bandwidth5 500 Hz CX, CY Range5 0.002 4.7 μF Sensor Resonant Frequency 5.5 kHz SELF TEST6 Duty Cycle Change Self test (ST) pin: pulled low (0) to high (1) 10 % DUTY CYCLE OUTPUT STAGE f 7 SET RSET = 125 kΩ 1 kHz f 7 SET Tolerance RSET = 125 kΩ 0.7 1.3 kHz Voltage Levels High I = 25 μA VS − 0.2 V Low I = 25 μA 200 mV t2 Drift vs. Temperature ±35 ppm/°C Rise/Fall Time 200 ns POWER SUPPLY Operating Voltage Range 3.0 5.25 V Specified Performance 4.75 5.25 V Quiescent Supply Current 0.7 1.1 mA Turn-On Time8 19 ms TEMPERATURE RANGE Specified Performance −40 +85 °C 1 Guaranteed by measurement of initial offset and sensitivity. 2 Sensitivity varies with VS. At VS = 3 V, sensitivity is typically 7.5%/g. 3 Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature. 4 Actual frequency response is controlled by a user supplied external capacitor (CX, CY). 5 Bandwidth = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.002 μF, bandwidth = 2500 Hz. For CX, CY = 4.7 μF, bandwidth = 1 Hz. Minimum/maximum values are not tested. 6 Self test response changes with VS. At VS = 3 V, self test output is typically 6%. 7 The value of fSET is defined by the following equation: 1 fSET = t2 8 Larger values of CX, CY increase turn-on time. Turn-on time is approximately 160 × CX or CY + 3, where CX, CY are in μF, and the resulting turn-on time is in ms. Rev. 0 | Page 3 of 12 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PERFORMANCE APPLICATIONS INFORMATION POWER SUPPLY DECOUPLING SETTING THE BANDWIDTH USING CX AND CY SELF TEST DESIGN TRADE-OFFS FOR SELECTING FILTER CHARACTERISTICS: NOISE vs. BANDWIDTH USING THE ADXL212 WITH OPERATING VOLTAGES OTHER THAN 5 V USING THE ADXL212 AS A DUAL AXIS TILT SENSOR Dual Axis Tilt Sensor: Converting Acceleration to Tilt OUTLINE DIMENSIONS ORDERING GUIDE
ADXL212 SPECIFICATIONS
TA = –40°C to +85°C, VS = 5 V, CX = CY = 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 Range1 ±1.5 ±2 g Nonlinearity Best fit straight line ±0.2 % of FS Package Alignment Error ±1 Degrees Alignment Error X sensor to Y sensor ±0.01 Degrees Cross Axis Sensitivity ±2 % SENSITIVITY (RATIOMETRIC)2 Each axis Sensitivity at XOUT, YOUT VS = 5 V 10 12.5 15 %/g Sensitivity Change Due to Temperature3 VS = 5 V ±0.5 % ZERO g BIAS LEVEL (RATIOMETRIC) Each axis 0 g Duty Cycle at XOUT, YOUT 25 50 75 % Initial 0 g Output Deviation from Ideal TA = 25°C ±2 % 0 g Duty Cycle vs. Supply 1.0 4.0 %/V 0 g Offset vs. Temperature ±2 mg/°C NOISE PERFORMANCE Noise Density TA = 25°C 500 1000 μg/√Hz rms FREQUENCY RESPONSE4 3 dB Bandwidth5 500 Hz CX, CY Range5 0.002 4.7 μF Sensor Resonant Frequency 5.5 kHz SELF TEST6 Duty Cycle Change Self test (ST) pin: pulled low (0) to high (1) 10 % DUTY CYCLE OUTPUT STAGE f 7 SET RSET = 125 kΩ 1 kHz f 7 SET Tolerance RSET = 125 kΩ 0.7 1.3 kHz Voltage Levels High I = 25 μA VS − 0.2 V Low I = 25 μA 200 mV t2 Drift vs. Temperature ±35 ppm/°C Rise/Fall Time 200 ns POWER SUPPLY Operating Voltage Range 3.0 5.25 V Specified Performance 4.75 5.25 V Quiescent Supply Current 0.7 1.1 mA Turn-On Time8 19 ms TEMPERATURE RANGE Specified Performance −40 +85 °C 1 Guaranteed by measurement of initial offset and sensitivity. 2 Sensitivity varies with VS. At VS = 3 V, sensitivity is typically 7.5%/g. 3 Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature. 4 Actual frequency response is controlled by a user supplied external capacitor (CX, CY). 5 Bandwidth = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.002 μF, bandwidth = 2500 Hz. For CX, CY = 4.7 μF, bandwidth = 1 Hz. Minimum/maximum values are not tested. 6 Self test response changes with VS. At VS = 3 V, self test output is typically 6%. 7 The value of fSET is defined by the following equation: 1 fSET = t2 8 Larger values of CX, CY increase turn-on time. Turn-on time is approximately 160 × CX or CY + 3, where CX, CY are in μF, and the resulting turn-on time is in ms. Rev. 0 | Page 3 of 12 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PERFORMANCE APPLICATIONS INFORMATION POWER SUPPLY DECOUPLING SETTING THE BANDWIDTH USING CX AND CY SELF TEST DESIGN TRADE-OFFS FOR SELECTING FILTER CHARACTERISTICS: NOISE vs. BANDWIDTH USING THE ADXL212 WITH OPERATING VOLTAGES OTHER THAN 5 V USING THE ADXL212 AS A DUAL AXIS TILT SENSOR Dual Axis Tilt Sensor: Converting Acceleration to Tilt OUTLINE DIMENSIONS ORDERING GUIDE