ADIS16265ACCZ(RevPrA) Просмотр технического описания (PDF) - Analog Devices
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ADIS16265ACCZ Datasheet PDF : 19 Pages
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Preliminary Technical Data
ADIS16260/ADIS16265
DATA OUTPUT REGISTER ACCESS
The ADIS16260/ADIS16265 provide access to calibrated
rotation measurements, relative angle estimates, power supply
measurements, temperature measurements, and an auxiliary
12-bit ADC channel. This output data is continuously updating
internally, regardless of user read rates. The following bit map
describes the structure of all output data registers, except
ENDURANCE, in the ADIS16260/ADIS16265.
Table 5. Register Bit Map
MSB
ND EA
D13 D12 D11 D10 D9
D7 D6 D5 D4 D3 D2 D1
LSB
D8
D0
The MSB holds the new data (ND) indicator. When the output
registers are updated with new data, the ND bit goes to a 1 state.
After the output data is read, it returns to a 0 state. The EA bit is
used to indicate a system error or an alarm condition that can
result from a number of conditions, such as a power supply that
is out of the specified operating range. See the Status and
Diagnostics section for more details. The output data is either
12 bits or 14 bits in length. For all of the 12-bit output data,
Bit D13 and Bit D12 are assigned don’t care status.
The output data register map is located in Table 6 and provides
all of the necessary details for accessing each register’s data.
Table 7 displays the output coding for the GYRO_OUT register.
Figure 11 provides an example SPI read cycle for this register.
Table 6. Data Output Register Information
Name
Function
ENDURANCE Flash Memory Write Counter
SUPPLY_OUT Power Supply Data
GYRO_OUT
Gyroscope Data
AUX_ADC
Auxiliary Analog Input Data
TEMP_OUT
Sensor Temperature Data
ANGL_OUT
Angle Output
Address
0x01, 0x00
0x03, 0x02
0x05, 0x04
0x0B, 0x0A
0x0D, 0x0C
0x0F, 0x0E
Resolution (Bits)
16
12
14
12
12
14
Data Format
Binary
Binary
Twos Complement
Binary
Twos Complement
Binary
Scale Factor (per LSB)
1 count
1.8315 mV
0.07326°/sec1
0.6105 mV
0.1453°C
0.03663°
1 Assumes that the scaling is set to 320°/sec.
Table 7. Output Coding Example, GYRO_OUT1, 2
Rate of Rotation
±320°/sec Range
±160°/sec Range
600°/sec
300°/sec
320°/sec
160°/sec
80°/sec
40°/sec
40°/sec
20°/sec
0.07326°/sec
0.03663°/sec
0°/sec
0°/sec
−0.07326°/sec
−0.03663°/sec
−40°/sec
−20°/sec
−80°/sec
−40°/sec
−320°/sec
−160°/sec
−600°/sec
−300°/sec
±80°/sec Range
150°/sec
80°/sec
20°/sec
10°/sec
0.018315°/sec
0°/sec
−0.018315°/sec
−10°/sec
−20°/sec
−80°/sec
−150°/sec
Binary Output
01 1111 1111 1111
01 0001 0001 0000
00 0100 0100 0100
00 0010 0010 0010
00 0000 0000 0001
00 0000 0000 0000
11 1111 1111 1111
11 1101 1101 1110
11 1011 1011 1100
10 1110 1111 0000
10 0000 0000 0000
Hex Output
0x1FFF
0x1110
0x0444
0x0222
0x0001
0x0000
0x3FFF
0x3DDE
0x3BBC
0x2EF0
0x2000
Decimal
8191
4368
1092
546
1
0
−1
−546
−1092
−4368
−8192
1 Two MSBs have been masked off and are not considered in the coding.
2 Nominal sensitivity and zero offset null performance are assumed.
CS
SCLK
DIN
W/R BIT = 0
ADDRESS = 000101
DOUT
DATA = 1011 1101 1101 1110
NEW DATA, NO ALARM, GYRO_OUT = –40°/SECOND
Figure 11. Example Read Cycle, ±320°/sec Setting
Rev. PrA | Page 11 of 19
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