EVAL-ADXL375 User Guide
UG-598
One
Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
3-Axis, ±200 g Digital Accelerometer Evaluation Board
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 2
GENERAL DESCRIPTION
The
EVAL-ADXL375Z
is a simple evaluation board that allows
quick evaluation of the performance of the
ADXL375
3-axis
digital accelerometer. The
EVAL-ADXL375Z
has two sets of
0.1 inch spaced vias, for population of a 4-pin and 5-pin header,
for access to all power and signal lines. The vias or headers
allow the evaluation board to be attached to a prototyping
board (breadboard) or attached to the PCB in an existing
system. Four holes are provided for mechanical attachment
of the
EVAL-ADXL375Z
to the application. An external host
processor is required for communication to the part.
The dimensions of the
EVAL-ADXL375Z
are 20 mm × 20 mm
with mounting holes set 15 mm × 15 mm at the corners of the
printed circuit board (PCB).
CIRCUIT DESCRIPTION
The schematic of the
EVAL-ADXL375Z
is shown in Figure 2.
See the
ADXL375
data sheet for configuration of the
accelerometer after it is connected to the application host
processor.
The PCB layout of the
EVAL-ADXL375Z
is shown in Figure 1.
The
EVAL-ADXL375Z
has three factory installed capacitors for
bypass: two 100 nF capacitors and a 10 μF capacitor. C1 and C2
are V
S
bypass capacitors to reduce analog supply noise and C3,
located between V
DD I/O
and GND, is provided to reduce digital
clocking noise.
HANDLING CONSIDERATIONS
The
EVAL-ADXL375Z
is not reverse polarity protected. Reversing
the V
S
or V
DD I/O
supply and GND pins can cause damage to the
ADXL375
.
Dropping the
EVAL-ADXL375Z
on a hard surface can generate
several thousand
g
’s of acceleration, which may exceed the data
sheet absolute maximum limits. See the
ADXL375
data sheet
for more information.
Figure 1. Physical Layout
EVALUATION BOARD SCHEMATIC
Figure 2. Schematic
345C
C1
C2
C3
U1
EVAL-ADXL345Z
VIO
GND
CS
VS
J1
J2
375Z
C1
C2
C3
U1
EVAL-ADXL375Z
VIO
GND
CS
VS
SCL
SDA
SDO
INT1
INT2
J1
J2
11748-
002
11748-
001
SDO/
ALT ADDRESS
V
DD I/O
GND
V
S
13
12
11
10
9
8
1
2
3
4
+x
+y
+z
5
6
14
7
CS
ADXL375
TOP VIEW
(Not to Scale)
SDA/SDI/SDIO
INT2
INT1
SCL/SCLK
C1
0.1µF
C3
0.1µF
C2
10µF
