Datasheet ADIS16448 (Analog Devices) - 7

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ADIS16448 Data Sheet TIMING SPECIFICATIONS
TA = 25°C, VDD = 3.3 V, unless otherwise noted.
Table 2. Normal Mode Burst Read Parameter Description Min1 Typ Max Min
1
Typ Max Unit
fSCLK Serial clock 0.01 2.0 0.01 1.0 MHz tSTALL Stall period between data 9 N/A2 µs tREADRATE Read rate 40 µs t Chip select to SCLK edge 48.8 48.8 ns CS tDAV DOUT valid after SCLK edge 100 100 ns tDSU DIN setup time before SCLK rising edge 24.4 24.4 ns tDHD DIN hold time after SCLK rising edge 48.8 48.8 ns tSCLKR, tSCLKF SCLK rise/fall times, not shown in the Timing Diagrams section 5 12.5 5 12.5 ns tDR, tDF DOUT rise/fal times, not shown in the Timing Diagrams section 5 12.5 5 12.5 ns tSFS CS high after SCLK edge 5 5 ns t1 Input sync positive pulse width 25 25 µs tSTDR Input sync to data ready valid transition 600 600 µs tNV Data invalid time 210 210 µs t3 Input sync period 910 910 µs 1 Guaranteed by design and characterization, but not tested in production. 2 When using the burst read mode, the stall period is not applicable.
Timing Diagrams CS tCS tSFS 1 2 3 4 5 6 15 16 SCLK tDAV DOUT MSB DB14 DB13 DB12 DB11 DB10 DB2 DB1 LSB t t DSU DHD DIN R/W A6 A5 A4 A3 A2 D2 D1 LSB
002 09946- Figure 2. SPI Timing and Sequence
tREADRATE tSTALL CS
003
SCLK
09946- Figure 3. Stall Time and Data Rate
t3 t t STDR 1 CLOCK DATA READY
004
tNV
09946- Figure 4. Input Clock Timing Diagram Rev. F | Page 6 of 25 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS USER REGISTERS USER INTERFACE READING SENSOR DATA Burst Read Function Burst Read Function with CRC SPI Read Test Sequence DEVICE CONFIGURATION Dual Memory Structure OUTPUT DATA REGISTERS GYROSCOPES ACCELEROMETERS MAGNETOMETERS BAROMETRIC PRESSURE REMOTE PRESSURE SENSING INTERNAL TEMPERATURE SYSTEM FUNCTIONS GLOBAL COMMANDS PRODUCT IDENTIFICATION SELF-TEST FUNCTION STATUS/ERROR FLAGS Magnetometer/Barometer New Data Indicator MEMORY MANAGEMENT Checksum Test INPUT/OUTPUT CONFIGURATION DATA READY INDICATOR GENERAL-PURPOSE INPUT/OUTPUT Example Input/Output Configuration DIGITAL PROCESSING CONFIGURATION GYROSCOPES/ACCELEROMETERS INPUT CLOCK CONFIGURATION Digital Filtering Dynamic Range MAGNETOMETER/BAROMETER New Data Indicators CALIBRATION GYROSCOPES Gyroscope Bias Error Estimation Gyroscope Bias Correction Factors Single Command Bias Correction ACCELEROMETERS Accelerometer Bias Error Estimation Accelerometer Bias Correction Factors Point of Percussion Alignment MAGNETOMETER CALIBRATION Hard Iron Correction Hard Iron Factors Soft Iron Effects FLASH UPDATES RESTORING FACTORY CALIBRATION ALARMS STATIC ALARM USE DYNAMIC ALARM USE ALARM REPORTING Alarm Example APPLICATIONS INFORMATION MOUNTING TIPS POWER SUPPLY CONSIDERATIONS ADIS16IMU2/PCBZ PC-BASED EVALUATION TOOLS OUTLINE DIMENSIONS ORDERING GUIDE