Small, Low Power, 3-Axis
±200
Accelerometer
Data Sheet
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FEATURES
3-axis sensing
Small, low profile package
3 mm × 3 mm × 1.45 mm LFCSP
Low power: 300 µA (typical)
Single-supply operation: 1.8 V to 3.6 V
10,000 g shock survival
Excellent temperature stability
Bandwidth adjustment with a single capacitor per axis
RoHS/WEEE and lead-free compliant
APPLICATIONS
Concussion and head trauma detection
High force event detection
GENERAL DESCRIPTION
The ADXL377 is a small, thin, low power, complete 3-axis
accelerometer with signal conditioned voltage outputs. The
ADXL377 measures acceleration resulting from motion, shock,
or vibration with a typical full-scale range of ±200 g.
The user selects the bandwidth of the accelerometer using
the C
X
, C
Y
, and C
Z
capacitors at the X
OUT
, Y
OUT
, and Z
OUT
pins.
Bandwidths can be selected to suit the application, with a range
of 0.5 Hz to 1300 Hz for the x-axis and y-axis and a range of
0.5 Hz to 1000 Hz for the z-axis.
The ADXL377 is available in a small, low profile, 3 mm × 3 mm ×
1.45 mm, 16-lead lead frame chip scale package (LFCSP_LQ).
FUNCTIONAL BLOCK DIAGRAM
ADXL377
3-AXIS
SENSOR
DEMODULATOR
OUTPUT
AMPLIFIERS
AC
AMPLIFIER
GND ST
+3V
32kΩ
X
OUT
C
X
C
Y
C
Z
Y
OUT
C
DC
V
S
Z
OUT
32kΩ
32kΩ
10765-001
Figure 1.
