ADIS16240/PCBZ Analog Devices Inc, ADIS16240/PCBZ Datasheet - Page 11

• Manufacturer Part Number: ADIS16240/PCBZ
• Description: BOARD EVAL FOR ADIS16240
• Manufacturer: Analog Devices Inc
• Series: iMEMS®, iSensor™r

Specifications of ADIS16240/PCBZ

• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±19g
• Interface: SPI Serial
• Sensitivity: 51.4mg/LSB
• Voltage - Supply: 2.4 V ~ 3.6 V
• Embedded: No
• Utilized Ic / Part: ADIS16240
• Silicon Manufacturer: Analog Devices
• Application Sub Type: Shock Sensor
• Kit Application Type: Sensing - Motion / Vibration / Shock
• Silicon Core Number: ADIS16240
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption

OUTPUT DATA REGISTERS
Each output data register uses the bit assignments shown in
Figure 19. The ND flag indicates that unread data resides in the
register. This flag clears and returns to 0 after reading the register.
It returns to 1 after the next internal sample updates the register
with new data. When the data-ready function (the DIO1 and
DIO2 pins and the MSC_CTRL register; see Table 25) drives
data collection, the ND bit is always high and does not require
validation. The EA flag indicates that one of the error flags in the
DIAG_STAT register (see Table 28) is active (true).
Table 8. Output Data Register Formats
Register
SUPPLY_OUT
XACCL_OUT
YACCL_OUT
ZACCL_OUT
AUX_ADC
TEMP_OUT
XPEAK_OUT
YPEAK_OUT
ZPEAK_OUT
XYZPEAK_OUT
1
2
Processing Sensor Data
Processing sensor data starts with reading the appropriate output
data register using the SPI. For example, use DIN = 0x0E00
to read the XPEAK_OUT register. Use the ND and EA bits to
validate new data and normal operating status, if necessary. Then
mask off all of the nondata bits and calculate the data, using the
format and scale information shown in Table 8. For example,
XACCL_OUT[9:0] and XYZPEAK_OUT[11:0] contain all
relevant data for their function. Table 9, Table 10, and Table 11
provide output code examples for each output register.
ND
Function requires MSC_CTRL[14] = 1.
Function requires MSC_CTRL[15] = 1.
EA
x
1
1
1
x
Figure 19. Output Register Bit Assignments
2
x
Bits
10
10
10
10
10
10
10
10
10
12
x
D9
Format
Binary, 0 V = 0x0000
Twos complement
Twos complement
Twos complement
Binary, 0 V = 0x0000
Binary, 25°C = 0x0133
Twos complement
Twos complement
Twos complement
Binary, 0 g
D8
D7
D6
2
= 0x0000
D5
MSB FOR 10-BIT OUTPUT
D4
D3
D2
Scale
4.88 mV
51.4 mg
51.4 mg
51.4 mg
V
0.244°C
51.4 mg
51.4 mg
51.4 mg
0.676 g
DD
D1
/1024
D0
2
Rev. 0 | Page 11 of 16
Table 9. Accelerometer Data Output Format
Binary
01 0011 0111
…
00 0000 0010
00 0000 0001
00 0000 0000
11 1111 1111
11 1111 1110
…
10 1100 1001
1
When MSC_CTRL[14] = 1, the XPEAK_OUT, YPEAK_OUT,
and ZPEAK_OUT registers track the peak acceleration in each
acceleration output register. When MSC_CTRL[15] = 1, use the
following equation to calculate the root mean square (rms) of all
three peak registers, where 1 LSB = 0.822 g:
Set GLOB_CMD[5] = 1 to reset these registers to 0x0000.
Table 10. Power Supply Data Output Format
Binary
10 1110 0010
…
10 1010 0101
10 1010 0100
10 1010 0011
…
01 1110 1100
1
Table 11. Temperature Data Output Format
Binary
10 0010 1001
…
01 0011 0100
01 0011 0011
01 0011 0010
…
00 0010 1001
1
The XACCL_OUT register is located at Address 0x05[15:8] and Address 0x04[7:0].
The YACCL_OUT register is located at Address 0x07[15:8] and Address 0x06[7:0].
The ZACCL_OUT register is located at Address 0x09[15:8] and Address 0x08[7:0].
The XPEAK_OUT register is located at Address 0x0F[15:8] and Address 0x0E[7:0].
The YPEAK_OUT register is located at Address 0x11[15:8] and Address 0x10[7:0].
The ZPEAK_OUT register is located at Address 0x13[15:8] and Address 0x12[7:0].
The SUPPLY_OUT register is located at Address 0x03[15:8] and Address 0x02[7:0].
The TEMP_OUT register is located at Address 0x0D[15:8] and Address 0x0C[7:0].
XYZ
rms
=
XYZPEAK
Hex
0x137
…
0x002
0x001
0x000
0x3FF
0x3FE
…
0x2C9
Hex
0x2E2
…
0x2A5
0x2A4
0x2A3
…
0x1EC
Hex
0x229
…
0x134
0x133
0x132
…
0x029
_
OUT
Codes
+311
…
+2
+1
0
−1
−2
…
−311
Codes
738
…
677
676
675
…
492
Codes
553
…
308
307
306
…
41
Acceleration
+16 g
…
+102.8 mg
+51.4 mg
0
−51.4 mg
−102.8 mg
…
−16 g
Power Supply (V)
3.6
…
3.30488
3.3
3.29502
…
2.4
Temperature (°C)
+85°C
…
+25.244°C
+25°C
+24.756°C
…
−40°C
1
1
ADIS16240
1