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ADIS16489 Datasheet(PDF) 19 Page - Analog Devices

Part # ADIS16489
Description  Seven Degrees of Freedom Inertial Sensor
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADIS16489 Datasheet(HTML) 19 Page - Analog Devices

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Data Sheet
ADIS16489
Rev. B | Page 19 of 40
X-Axis Accelerometer (X_ACCL_LOW, X_ACCL_OUT)
Table 38. X_ACCL_LOW Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x1C, 0x1D
Not applicable
R
No
Table 39. X_ACCL_LOW Bit Definitions
Bits
Description
[15:0]
X-axis accelerometer data; low word
Table 40. X_ACCL_OUT Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x1E, 0x1F
Not applicable
R
No
Table 41. X_ACCL_OUT Definitions
Bits
Description
[15:0]
X-axis accelerometer data, high word; twos
complement, ±18 g range; 0 g = 0x0000, 1 LSB = 0.8 mg
The X_ACCL_LOW (see Table 38 and Table 39) and X_ACCL_
OUT (see Table 40 and Table 41) registers contain the
accelerometer data for the x-axis.
Y-Axis Accelerometer (Y_ACCL_LOW, Y_ACCL_OUT)
Table 42. Y_ACCL_LOW Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x20, 0x21
Not applicable
R
No
Table 43. Y_ACCL_LOW Bit Definitions
Bits
Description
[15:0]
Y-axis accelerometer data; low word
Table 44. Y_ACCL_OUT Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x22, 0x23
Not applicable
R
No
Table 45. Y_ACCL_OUT Bit Definitions
Bits
Description
[15:0]
Y-axis accelerometer data; twos complement,
±18 g range, 0 g = 0x0000, 1 LSB = 0.8 mg
The Y_ACCL_LOW (see Table 42 and Table 43) and
Y_ACCL_ OUT (see Table 44 and Table 45) registers contain the
accelerometer data for the x-axis.
Z-Axis Accelerometer (Z_ACCL_LOW, Z_ACCL_OUT)
Table 46. Z_ACCL_LOW Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x24, 0x25
Not applicable
R
No
Table 47. Z_ACCL_LOW Bit Definitions
Bits
Description
[15:0]
Z-axis accelerometer data; low word
Table 48. Z_ACCL_OUT Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x26, 0x27
Not applicable
R
No
Table 49. Z_ACCL_OUT Bit Definitions
Bits
Description
[15:0]
Z-axis accelerometer data, high word; twos
complement, ±18 g range; 0 g = 0x0000, 1 LSB = 0.8 mg
The Z_ACCL_LOW (see Table 46 and Table 47) and Z_ACCL_
OUT (see Table 48 and Table 49) registers contain the accelerome-
ter data for the z-axis.
Accelerometer Resolution
Table 50 and Table 51 offer various numerical examples that
demonstrate the format of the linear acceleration data in both
16-bit and 32-bit formats.
Table 50. 16-Bit Accelerometer Data Format Examples
Acceleration
Decimal
Hex
Binary
+18 g
+20,000
0x4E20
0100 1110 0010 0000
+1.6 mg
+2
0x0002
0000 0000 0000 0010
+0.8 mg
+1
0x0001
0000 0000 0000 0001
0 mg
0
0x0000
0000 0000 0000 0000
−0.8 mg
−1
0xFFFF
1111 1111 1111 1111
−1.6 mg
−2
0xFFFE
1111 1111 1111 1110
−18 g
−20,000
0xB1E0
1011 0001 1110 0000
Table 51. 32-Bit Accelerometer Data Format Examples
Acceleration (g)
Decimal
Hex
+18
+1,310,720,000
0x4E200000
+0.0008/215
+2
0x00000002
+0.0008/216
+1
0x00000001
0
0
0x00000000
−0.0008/216
−1
0xFFFFFFFF
−0.0008/215
−2
0xFFFFFFFE
−18
−1,310,720,000
0xB1E00000
BAROMETER DATA
The barometer measures the atmospheric pressure. The
barometer has two output data registers: BAROM_LOW and
BAROM_OUT. Figure 22 illustrates how these two registers
combine to support 32-bit, twos complement data format for the
pressure measurements.
BAROMETER DATA
0 15
15
0
BAROM_OUT
BAROM_LOW
Figure 22. Barometer Output Data Structure
Barometer (BAROM_LOW, BAROM_OUT)
Table 52. BAROM_LOW Register Definition
Page
Addresses
Default
Access
Flash Backup
0x00
0x2E, 0x2F
Not applicable
R
No
Table 53. BAROM_LOW Bit Definitions
Bits
Description
[15:0]
Barometer data; low word


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