ADIS16367/PCBZ View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADIS16367/PCBZ' PDF : 20 Pages View PDF
ADIS16367
Data Sheet
CALIBRATION
Restoring Factory Calibration
Manual Bias Calibration
Set GLOB_CMD[1] = 1 (DIN = 0xBE02) to execute the factory
The bias offset registers in Table 15 and Table 16 provide a
manual adjustment function for the output of each sensor. For
example, if XGYRO_OFF = 0x1FF6 (DIN = 0x9B1F, 0x9AF6),
the XGYRO_OUT offset shifts by −10 LSBs, or −0.5°/sec.
calibration restore function. This function resets each user
calibration register to 0x0000 (see Table 15 and Table 16), resets
all sensor data to 0, and automatically updates the flash memory
within 50 ms (see Table 17).
Linear Acceleration Bias Compensation (Gyroscope)
Table 15. XGYRO_OFF, YGYRO_OFF, ZGYRO_OFF
Bit Descriptions
Set MSC_CTRL[7] = 1 (DIN = 0xB486) to enable correction for
Bit
Description (Default = 0x0000)
low frequency acceleration influences on gyroscope bias. The
[15:13] Not used.
DIN sequence also preserves the factory default condition for
[12:0]
Data bits. Twos complement, 0.05°/sec per LSB.
Typical adjustment range = ±200°/sec.
Table 16. XACCL_OFF, YACCL_OFF, ZACCL_OFF
Bit Descriptions
E Bit
Description (Default = 0x0000)
[15:12] Not used.
[11:0]
Data bits. Twos complement, 3.333 mg/LSB.
Typical adjustment range = ±6.75 g.
T Gyroscope Automatic Bias Null Calibration
Set GLOB_CMD[0] = 1 (DIN = 0xBE01) to execute the automatic
E bias null calibration function. This function measures all three
gyroscope output registers and then loads each gyroscope offset
register with the opposite value to provide a quick bias calibration.
All sensor data is then reset to 0, and the flash memory is
L updated automatically within 50 ms (see Table 17).
Gyroscope Precision Automatic Bias Null Calibration
Set GLOB_CMD[4] = 1 (DIN = 0xBE10) to execute the precision
O automatic bias null calibration function. This function takes the
sensor offline for 30 sec while it collects a set of data and calculates
more accurate bias correction factors for each gyroscope. After
this function is executed, the newly calculated correction factor
S is loaded into the gyroscope offset registers, all sensor data is
reset to 0, and the flash memory is updated automatically within
OB 50 ms (see Table 17).
the data-ready function (see Table 22).
OPERATIONAL CONTROL
Global Commands
The GLOB_CMD register provides trigger bits for several useful
functions. Setting the assigned bit to 1 starts each operation,
which returns the bit to 0 after completion. For example, set
GLOB_CMD[7] = 1 (DIN = 0xBE80) to execute a software reset,
which stops the sensor operation and runs the device through
its start-up sequence. This sequence includes loading the control
registers with the data in their respective flash memory locations
prior to producing new data. Reading the GLOB_CMD register
(DIN = 0x3E00) starts the burst read sequence.
Table 17. GLOB_CMD Bit Descriptions
Bits Description
[15:8] Not used
[7] Software reset command
[6:5] Not used
[4] Precision autonull command
[3] Flash update command (see the Device Configuration
section)
[2] Auxiliary DAC data latch (see Table 24)
[1] Factory calibration restore command
[0] Autonull command
Rev. B | Page 12 of 20
Share Link: 
