ADIS16210/PCBZ Analog Devices Inc, ADIS16210/PCBZ Datasheet - Page 13

• Manufacturer Part Number: ADIS16210/PCBZ
• Description: ADIS16210/PCB EVAL. BD.
• Manufacturer: Analog Devices Inc
• Series: iSensor™r

Specifications of ADIS16210/PCBZ

• Sensor Type: Accelerometer, Inclinometer, 3 Axis
• Sensing Range: ±180° Roll and Pitch Range, ±90° Gravity Axis, &plusmn1.7 g
• Interface: SPI Serial
• Sensitivity: ±0.21° Relative Accuracy, ±1mg
• Voltage - Supply: -
• Embedded: No
• Utilized Ic / Part: ADIS16210
• Silicon Manufacturer: Analog Devices
• Kit Application Type: Sensing - Navigation / Position
• Application Sub Type: Accelerometer - Three-Axis
• Kit Contents: Board, Docs
• Silicon Core Number: ADIS16210
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The pitch (θ) and roll (φ) axes provide ±180° of measurement
range, whereas the gravity (ψ) axis provides ±90° of measurement
range. The MSC_CTRL register (see Table 27) provides three
control bits that set the orientation of the device, which assigns
each accelerometer to an angle axis (pitch, roll, gravity).
Table 27. MSC_CTRL (Base Address = 0x34), Read/Write
Bits
[15:10]
[9:8]
[7:3]
[2]
[1:0]
For best use of the available range and accuracy, use Bits[2:0] in
the MSC_CTRL register to establish the accelerometer that best
aligns with gravity when the device is oriented at its reference
point. For example, Figure 11 provides a reference point orien-
tation, where the z-axis accelerometer aligns with gravity, for
which the factory default setting for MSC_CTRL (0x0002) is
optimal.
Bits[1:0] provide a control for setting the axis that is most closely
aligned with the gravity vector and assigns the pitch and roll axes.
Bit 2 provides a control for the direction/polarity of this. Thus,
when using the factory default setting for MSC_CTRL, read
XINCL_OUT for the pitch angle and YINCL_OUT for the roll
angle measurements. Figure 18, Figure 19, and Figure 20 provide
several examples for these settings, which are different from the
factory programmed settings.
Value
0
1
1
0
00
01
10
11
Description (Default = 0x0002)
Not used
Measurement mode
Inclinometer
Accelerometer
Not used
Gravity vector polarity, K
Negative, pointing down (−)
Positive, pointing up (+)
Gravity vector orientation
X = gravity vector
Y = pitch axis (θ, a
Z = roll axis (φ, a
Y = gravity vector
X = pitch axis (θ, a
Z = roll axis (φ, a
Z = gravity vector
X = pitch axis (θ, a
Y = roll axis (φ, a
Reserved
R
R
R
)
)
)
P
P
P
)
)
)
GP
Rev. A | Page 13 of 20
Measurement Mode
MSC_CTRL[8] establishes the primary measurement function.
Setting MSC_CTRL[8] = 1 (DIN = 0xB501) disables signal pro-
cessing on the accelerometer data, which is specific to producing
incline angle measurements.
Figure 18. Z-Axis Gravity Vector, Negative Polarity
Figure 20. Y-Axis Gravity Vector, Negative Polarity
Figure 19. X-Axis Gravity Vector, Positive Polarity
Set MSC_CTRL = 0x0006 (DIN = 0xB406)
Set MSC_CTRL = 0x0000 (DIN = 0xB400)
Set MSC_CTRL = 0x0005 (DIN = 0xB405)
a
Z
a
Y
a
X
ADIS16210