ADIS16260 Просмотр технического описания (PDF) - Analog Devices

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ADIS16260

Programmable Digital Gyroscope Sensor

Analog Devices 

Data Sheet

PROCESSING SENSOR DATA

Table 8 provides a summary of the output data registers, which

use the bit pattern shown in Figure 14. The ND bit is equal to 1

when the register contains unread data. The EA bit is high when

any error/alarm flag in the DIAG_STAT register is equal to 1.

MSB FOR 14-BIT OUTPUT

ND EA

MSB FOR 12-BIT OUTPUT

Figure 14. Output Register Bit Assignments

Table 8. Output Data Register Formats

Register

Bits

Scale

SUPPLY_OUT 12

1.8315 mV

GYRO_OUT1 14

0.07326°/sec

ANGL_OUT 14

0.03663°

TEMP_OUT2 12

0.1453°C

AUX_ADC

12

610.5 µV

Reference

See Table 9

See Table 10

See Table 11

See Table 12

See Table 13

1 Assumes that the scaling is set to ±320°/sec. This factor scales with the range.

2 0x0000 = 25°C (±5°C).

Table 9. SUPPLY_OUT Data Format Examples

Supply

Voltage (V) Decimal

Hex

Binary Output

5.25

2867 LSB

0xB33

1011 0011 0011

5.0 + 0.00183 2731 LSB

0xAAB

1010 1010 1011

5.0

2730 LSB

0xAAA

1010 1010 1010

5.0 − 0.00183 2729 LSB

0xAA9

1010 1010 1001

4.75

2594 LSB

0xA22

1010 0010 0010

Table 10. GYRO_OUT Data Format Examples

Rotation

Rate (°/sec)1 Decimal

Hex

Binary Output

+320

+4368 LSB 0x1110 01 0001 0001 0000

+0.07326

+1 LSB

0x0001 00 0000 0000 0001

0

0 LSB

0x0000 00 0000 0000 0000

−0.07326

−1 LSB

0x3FFF

11 1111 1111 1111

−320

−4368 LSB 0x2EF0 10 1110 1111 0000

1 For the ±320°/sec setting, rate values scale with the range setting.

ADIS16260/ADIS16265

Table 11. ANGL_OUT Data Format Examples

Angle1

Decimal Hex

Binary Output

359.9630°

9827 LSB 0x2663 10 0110 0110 0011

359.9264°

9826 LSB 0x2662 10 0110 0110 0010

0.36630°

10 LSB

0x000A 00 0000 0000 1010

0.03663°

1 LSB

0x0001 00 0000 0000 0001

0°

0 LSB

0x0000 00 0000 0000 0000

1 359.963° + 1 LSB is equal to 0x0000.

Table 12. TEMP_OUT Data Format Examples

Temperature Decimal Hex

Binary Output

+105°C

+551 LSB 0x227

0010 0010 0111

+25.1453°C +1 LSB

0x001

0000 0000 0001

+25°C

0 LSB

0x000

0000 0000 0000

+24.8547°C −1 LSB

0xFFF

1111 1111 1111

−40°C

−447 LSB 0xE41

1110 0100 0001

Table 13. AUX_ADC Data Format Examples

Input (mV) Decimal Hex

Binary Output

2500

4095 LSB 0xFFF

1111 1111 1111

1200

1966 LSB 0x7AE

0111 1010 1110

0.6105

1 LSB

0x001

0000 0000 0001

0

0 LSB

0x000

0000 0000 0000

OPERATIONAL CONTROLS

Internal Sample Rate

The SMPL_PRD register controls the internal sample rate using the

bit assignments in Table 14. When SMPL_PRD[7:0] = 0x00, the

internal sample rate is 2048 SPS. When SMPL_PRD[7:0] ≥ 0x01,

use the bit definitions in Table 14 and the following equation to

calculate the sample rate.

fS

=

1

tS

=

1

t B × (N S + 1)

Table 14. SMPL_PRD Bit Descriptions

Bits

Description (Default = 0x0001)

[15:8]

Not used

[7]

Time base (tB): 0 = 1.953 ms, 1 = 60.54 ms

[6:0]

Increment setting (NS)

Rev. D | Page 13 of 20

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