Datasheet ADXRS645 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | High Temperature, Vibration Rejecting ±2000°/sec Gyroscope |
| Pages / Page | 11 / 4 — Data Sheet. ADXRS645. SPECIFICATIONS. Table 1. Parameter. Test … |
| Revision | A |
| File Format / Size | PDF / 362 Kb |
| Document Language | English |
Data Sheet. ADXRS645. SPECIFICATIONS. Table 1. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
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Data Sheet ADXRS645 SPECIFICATIONS
Al minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. TA = 25°C, VS = AVCC = VDD = 5 V, VRATIO = AVCC, angular rate = 0°/sec, bandwidth = 80 Hz (COUT = 0.01 µF), and IOUT = 100 µA, unless otherwise noted.
Table 1. Parameter Test Conditions/Comments Min Typ Max Unit
SENSITIVITY1 Clockwise rotation is positive output Measurement Range2, 3 ±2000 °/sec Initial TA = 25°C 1 mV/°/sec Temperature Drift Uncompensated, −40°C to +150°C4 ±5 % Uncompensated, 150°C to 175°C −35 % Nonlinearity Best fit straight line 0.1 % of FS NULL1 Initial TA = 25°C 2.4 2.5 2.6 V Temperature Drift Uncompensated, −40°C to +150°C4 ±50 °/sec Uncompensated, 150°C to 175°C ±150 °/sec Linear Acceleration Effect Any axis 0.1 °/sec/g Vibration Rectification 25 g rms, 50 Hz to 5 kHz 0.0006 °/sec/g2 NOISE PERFORMANCE Rate Noise Density TA ≤ 25°C 0.25 °/sec/√Hz Resolution Floor TA = 25°C, 1 minute to 1 hour in-run 100 °/hr TA = 150°C, 1 minute to 1 hour in-run 150 °/hr FREQUENCY RESPONSE Bandwidth (±3 dB)5 No external filter 2000 Hz Sensor Resonant Frequency 15.5 17.5 20 kHz SELF-TEST1 ST1 RATEOUT Response ST1 pin from Logic 0 to Logic 1 −1300 °/sec ST2 RATEOUT Response ST2 pin from Logic 0 to Logic 1 1300 °/sec ST1 to ST2 Mismatch6 ±2 % Logic 1 Input Voltage 3.3 V Logic 0 Input Voltage 1.7 V Input Impedance To common 40 50 100 kΩ TEMPERATURE SENSOR1 VTEMP at 25°C Load = 10 MΩ 2.3 2.4 2.5 V Scale Factor7 25°C, VRATIO = 5 V 9 mV/°C TURN-ON TIME8 Power on to ±2°/sec of final with CP5 = 100 nF 50 ms OUTPUT DRIVE CAPABILITY Current Drive For rated specifications 200 µA Capacitive Load Drive 1000 pF POWER SUPPLY Operating Voltage (VS) 4.75 5.00 5.25 V Quiescent Supply Current 3.5 mA TEMPERATURE RANGE Specified Performance −40 +175 °C LIFESPAN Usable Life Expectancy TA = 175°C 1000 Hours 1 Parameter is linearly ratiometric with VRATIO. 2 Measurement range is the maximum range possible, including output swing range, initial offset, sensitivity, offset drift, and sensitivity drift at 5 V supplies. 3 Measurement range can be extended to as much as ±5000°/s by adding a single 120 kΩ resistor between the RATEOUT and SUMJ pins. 4 Maximum deviation from +25°C to −40°C or +25°C to +150°C, see the Typical Performance Characteristics section for typical behavior over temperature. 5 Adjusted by the external capacitor, COUT. Reducing bandwidth below 0.01 Hz does not result in further noise improvement. 6 Self-test mismatch is described as (ST2 + ST1)/((ST2 − ST1)/2). 7 Scale factor for a change in temperature from 25°C to 26°C. VTEMP is ratiometric to VRATIO. 8 Based on characterization. Rev. A | Page 3 of 10 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Absolute Maximum Ratings Rate Sensitive Axis ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting Bandwidth Temperature Output and Calibration Supply Ratiometricity Range Extension Self-Test Function Continuous Self-Test Outline Dimensions Ordering Guide
Data Sheet ADXRS645 SPECIFICATIONS
Al minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. TA = 25°C, VS = AVCC = VDD = 5 V, VRATIO = AVCC, angular rate = 0°/sec, bandwidth = 80 Hz (COUT = 0.01 µF), and IOUT = 100 µA, unless otherwise noted.
Table 1. Parameter Test Conditions/Comments Min Typ Max Unit
SENSITIVITY1 Clockwise rotation is positive output Measurement Range2, 3 ±2000 °/sec Initial TA = 25°C 1 mV/°/sec Temperature Drift Uncompensated, −40°C to +150°C4 ±5 % Uncompensated, 150°C to 175°C −35 % Nonlinearity Best fit straight line 0.1 % of FS NULL1 Initial TA = 25°C 2.4 2.5 2.6 V Temperature Drift Uncompensated, −40°C to +150°C4 ±50 °/sec Uncompensated, 150°C to 175°C ±150 °/sec Linear Acceleration Effect Any axis 0.1 °/sec/g Vibration Rectification 25 g rms, 50 Hz to 5 kHz 0.0006 °/sec/g2 NOISE PERFORMANCE Rate Noise Density TA ≤ 25°C 0.25 °/sec/√Hz Resolution Floor TA = 25°C, 1 minute to 1 hour in-run 100 °/hr TA = 150°C, 1 minute to 1 hour in-run 150 °/hr FREQUENCY RESPONSE Bandwidth (±3 dB)5 No external filter 2000 Hz Sensor Resonant Frequency 15.5 17.5 20 kHz SELF-TEST1 ST1 RATEOUT Response ST1 pin from Logic 0 to Logic 1 −1300 °/sec ST2 RATEOUT Response ST2 pin from Logic 0 to Logic 1 1300 °/sec ST1 to ST2 Mismatch6 ±2 % Logic 1 Input Voltage 3.3 V Logic 0 Input Voltage 1.7 V Input Impedance To common 40 50 100 kΩ TEMPERATURE SENSOR1 VTEMP at 25°C Load = 10 MΩ 2.3 2.4 2.5 V Scale Factor7 25°C, VRATIO = 5 V 9 mV/°C TURN-ON TIME8 Power on to ±2°/sec of final with CP5 = 100 nF 50 ms OUTPUT DRIVE CAPABILITY Current Drive For rated specifications 200 µA Capacitive Load Drive 1000 pF POWER SUPPLY Operating Voltage (VS) 4.75 5.00 5.25 V Quiescent Supply Current 3.5 mA TEMPERATURE RANGE Specified Performance −40 +175 °C LIFESPAN Usable Life Expectancy TA = 175°C 1000 Hours 1 Parameter is linearly ratiometric with VRATIO. 2 Measurement range is the maximum range possible, including output swing range, initial offset, sensitivity, offset drift, and sensitivity drift at 5 V supplies. 3 Measurement range can be extended to as much as ±5000°/s by adding a single 120 kΩ resistor between the RATEOUT and SUMJ pins. 4 Maximum deviation from +25°C to −40°C or +25°C to +150°C, see the Typical Performance Characteristics section for typical behavior over temperature. 5 Adjusted by the external capacitor, COUT. Reducing bandwidth below 0.01 Hz does not result in further noise improvement. 6 Self-test mismatch is described as (ST2 + ST1)/((ST2 − ST1)/2). 7 Scale factor for a change in temperature from 25°C to 26°C. VTEMP is ratiometric to VRATIO. 8 Based on characterization. Rev. A | Page 3 of 10 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Absolute Maximum Ratings Rate Sensitive Axis ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting Bandwidth Temperature Output and Calibration Supply Ratiometricity Range Extension Self-Test Function Continuous Self-Test Outline Dimensions Ordering Guide
