ADXRS453 Analog Devices, ADXRS453 Datasheet - Page 12

• Manufacturer Part Number: ADXRS453
• Description: High Performance / Digital Output Gyroscope
• Manufacturer: Analog Devices

www.DataSheet4U.com
ADXRS453
APPLICATIONS INFORMATION
CALIBRATED PERFORMANCE
The ADXRS453 gyroscope uses internal EEPROM memory to
store its temperature calibration information. The calibration
information is encoded into the device during factory test. The
calibration data is used to perform offset, gain, and self-test cor-
rections over temperature. By storing this information internally,
the ADXRS453 eliminates the need for the customer to perform
system level temperature calibration.
MECHANICAL CONSIDERATIONS FOR MOUNTING
Mount the ADXRS453 in a location close to a hard mounting
point of the PCB. Mounting the ADXRS453 at an unsupported
PCB location (that is, at the end of a lever or in the middle of a
trampoline, as shown in Figure 25) can result in apparent mea-
surement errors because the gyroscope is subject to the resonant
vibration of the PCB. Locating the gyroscope near a hard mounting
point helps to ensure that any PCB resonances at the gyroscope
are above the frequency at which harmful aliasing with the
internal electronics can occur. To ensure that aliased signals do
not couple into the baseband measurement range, design the
module so that the first system level resonance occurs at a
frequency higher than 800 Hz.
APPLICATION CIRCUITS
Figure 26 and Figure 27 show the recommended application
circuits for the ADXRS453 gyroscope. These application circuits
provide a connection reference for the available package types.
Note that DV
ground through 1 μF capacitors; do not connect these supplies
together. In addition, an external diode and inductor must be
connected for proper operation of the internal shunt regulator
(see Table 7). These components allow the internal resonator
drive voltage to reach its required level.
Table 7. Components for ADXRS453 Application Circuits
Component
Inductor
Diode
Capacitor
Capacitor
DD
, AV
Figure 25. Incorrectly Placed Gyroscope
MOUNTING POINTS
DD
Qty
1
1
3
1
GYROSCOPE
, and P
PCB
DD
Description
470 μH
>24 V breakdown voltage
1 μF
100 nF
are all individually connected to
Rev. 0 | Page 12 of 32
Figure 26. Recommended Application Circuit, SOIC_CAV Package
1µF
1µF
Figure 27. Recommended Application Circuit, LCC_V Package
3.3V TO 5V
GND
GND
GND
100nF
1µF
1µF
470µH
1
AV
AV
MISO
DV
SCLK
CP5
RSVD
1
8
>24V BREAKDOWN
SS
DD
DD
DV
RSVD
RSVD
CS
MISO
P
P
V
>24V BREAKDOWN
TOP VIEW
DD
SS
X
DD
DIODE
DIODE
RSVD
MOSI
DV
P
P
CS
V
DD
SS
SS
RSVD
RSVD
SCLK
MOSI
AV
DV
X
AV
CP5
GND
DD
SS
14
SS
1µF
16
9
GND
3.3V TO 5V
470µH
1µF
100nF
GND