ADIS16480 AD [Analog Devices], ADIS16480 Datasheet - Page 31

• Manufacturer Part Number: ADIS16480
• Description: Ten Degrees of Freedom Inertial Sensor
• Manufacturer: AD [Analog Devices]

Data Sheet
ACCELEROMETERS
The user calibration for the accelerometers includes registers for
adjusting bias and sensitivity, as shown in Figure 24.
Manual Bias Correction
The xA_BIAS_HIGH registers (see Table 107, Table 108,
and Table 109) and xA_BIAS_LOW registers (see Table 110,
Table 111, and Table 112) provide a bias adjustment function
for the output of each gyroscope sensor. The xA_BIAS_HIGH
registers use the same format as x_ACCL_OUT registers.
The xA_BIAS_LOW registers use the same format as
x_ACCL_LOW registers.
Table 107. XA_BIAS_HIGH (Page 2, Base Address = 0x1E)
Bits
[15:0]
Table 108. YA_BIAS_HIGH (Page 2, Base Address = 0x22)
Bits
[15:0]
Table 109. ZA_BIAS_HIGH (Page 2, Base Address = 0x26)
Bits
[15:0]
Table 110. XA_BIAS_LOW (Page 2, Base Address = 0x1C)
Bits
[15:0]
Table 111. YA_BIAS_LOW (Page 2, Base Address = 0x20)
Bits
[15:0]
Table 112. ZA_BIAS_LOW (Page 2, Base Address = 0x24)
Bits
[15:0]
X-AXIS
ACCL
Figure 24. User Calibration Signal Path, Accelerometers
CALIBRATION
Description (Default = 0x0000)
X-axis accelerometer offset correction, high word,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Description (Default = 0x0000)
Y-axis accelerometer offset correction, high word,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Description (Default = 0x0000)
Z-axis accelerometer offset correction, high word,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Description (Default = 0x0000)
X-axis accelerometer offset correction, low word,
Twos complement, 0 g = 0x0000,
1 LSB = 0.8 mg ÷ 2
Description (Default = 0x0000)
Y-axis accelerometer offset correction, low word,
Twos complement, 0 g = 0x0000,
1 LSB = 0.8 mg ÷ 2
Description (Default = 0x0000)
Z-axis accelerometer offset correction, low word;,
Twos complement, 0 g = 0x0000,
1 LSB = 0.8 mg ÷ 2
FILTERING
FACTORY
AND
XA_BIAS_HIGH
1 + X_ACCL_SCALE
XA_BIAS_LOW
16
16
16
= ~0.0000122 mg
= ~0.0000122 mg
= ~0.0000122 mg
X_ACCL_OUT
X_ACCL_LOW
Rev. 0 | Page 31 of 40
Manual Sensitivity Correction
The x_ACCL_SCALE registers enable sensitivity adjustment
(see Table 113, Table 114, Table 115).
Table 113. X_ACCL_SCALE (Page 2, Base Address = 0x0A)
Bits
[15:0]
Table 114. Y_ACCL_SCALE (Page 2, Base Address = 0x0C)
Bits
[15:0]
Table 115. Z_ACCL_SCALE (Page 2, Base Address = 0x0E)
Bits
[15:0]
MAGNETOMETERS
The user calibration registers enable both hard iron and soft
iron correction, as shown in the following relationship:
The M
data, prior to application of the user correction formula. The
M
application of the user correction formula.
XC
, M





M
M
M
X
YC
, M
XC
YC
ZC
, and M





Description (Default = 0x0000)
X-axis accelerometer scale correction,
Twos complement, 0x0000 = unity gain,
1 LSB = 1 ÷ 2
Description (Default = 0x0000)
Y-axis accelerometer scale correction,
Twos complement, 0x0000 = unity gain,
1 LSB = 1 ÷ 2
Description (Default = 0x0000)
Z-axis accelerometer scale correction,
Twos complement, 0x0000 = unity gain,
1 LSB = 1 ÷ 2
Y

, and M





1

S
S
ZC
21
31
S
11
represent the magnetometer data, after the
Z
variables represent the magnetometer
1
15
15
15

S
S
12
32
= ~0.003052%
= ~0.003052%
= ~0.003052%
S
22
1

S
S
13
23
S
33











M
M
M
Y
X
Z






ADIS16480





H
H
H
X
Y
Z




