KXPA4 Series Data Sheet
Accelerometers and Inclinometers
Multiplexed Analog Output
KXPA4-1050
— Tri-Axis XYZ, 2.8V
KXPA4-2050
— Tri-Axis XYZ, 3.3V
APPLICATIONS
Drop Detection
Gesture Recognition
Inclination and Tilt Sensing
Image Stabilization
Sports Diagnostics
Vibration Analysis
Static or Dynamic Acceleration
Inertial Navigation and Ded(uctive) Reckoning
Cell Phones and Handheld PDAs
Gaming and Game Controllers
Universal Remote Controls
Theft and Accident Alarms
GPS Recognition Assist
Hard-drive Protection
Pedometers
Computer Peripherals
Cameras and Video Equipment
FEATURES
Ultra-Small Package — 5x5x1.2mm DFN
Precision Tri-axis Orthogonal Alignment
Multiplexed Analog Output
High Shock Survivability
Excellent Temperature Performance
Low Noise Density
Very Low Power Consumption
Selectable Power Reduction Modes
User Definable Bandwidth
Factory Programmable Offset
and Sensitivity
Self-test Function
PROPRIETARY TECHNOLOGY
These high-performance silicon micromachined linear
accelerometers and inclinometers consists of a sensor
element and an ASIC packaged in a 5x5x1.2mm Dual
Flat No-lead (DFN). The sensor element is fabricated
from single-crystal silicon with proprietary Deep Reactive
Ion Etching (DRIE) processes, and is protected from the
environment by a hermetically-sealed silicon cap wafer at
the wafer level.
The
KXPA4
series is designed to provide a high signal-to-
noise ratio with excellent performance over temperature.
These sensors can accept supply voltages between 2.7V
and 5.25V. Sensitivity is factory programmable allowing
customization for applications requiring ±1.5g to ±6.0g
ranges. Sensor bandwidth is user-definable.
The sensor element functions on the principle of
differential capacitance. Acceleration causes displace-
ment of a silicon structure resulting in a change in ca-
pacitance. An ASIC, using a standard CMOS manufactur-
ing process, detects and transforms changes in capaci-
tance into an analog output voltage, which is proportional
to acceleration. The analog output is also accessed
through an on-board 3 channel multiplexor. The sense
element design utilizes common mode cancellation to
decrease
errors
from
process
variation
and
environmental stress.
Precision
in Motion
36 Thornwood Dr. - Ithaca, NY 14850 USA tel: 607-257-1080 - fax: 607-257-1146 - www.kionix.com - info@kionix.com
“Kionix” is a registered trademark of Kionix, Inc. Products described herein are protected by patents issued or pending. Information provided in this document is believed to
be accurate and reliable but is not guaranteed. Kionix does not assume responsibility for its use or distribution. No license is granted by implication or otherwise under any
patent or other rights of Kionix. Kionix reserves the right to change product specifications or discontinue this product at any time without prior notice.
© Kionix 2006
April 27, 2006
Page 1 of 3
Rev 0.5
KXPA4 Series Data Sheet
PRODUCT SPECIFICATIONS
PERFORMANCE SPECIFICATIONS
PARAMETERS
Range
2
1
UNITS KXPA4–1050 KXPA4–2050
g
mV/g
mg
°C
%
mV
±1120
175 typical
0 to 3300 max (x and y)
0 to 1700 max (z)
32K typical
0.1 typical (0.5 max)
±0.4 typical (±1.5 max)
±2.0 typical (±3.0 max)
2.8
1
CONDITION
Factory programmable
±2.0
560
-40 to 85
3
Sensitivity
0g Offset vs. Temp.
Sensitivity vs. Temp
Span
Noise
Bandwidth
4
660
Over temp range
Over temp range
±1320
±150 (x and y) ±300 (z)
±2.0 max
µ
g
/
Hz
Hz
5
-3dB
Output Resistance
Non-Linearity
Ratiometric Error
Ω
% of FS
%
%
V
V
Cross-axis Sensitivity
3.3
1.1 typical
<10
1.6
1
-0.3 (min) 7.0 (max)
Absolute min/max
Shutdown pin connected to GND
Power-up time @ 500 Hz
6
Power Supply
mA
µA
ms
PARAMETERS
Operating Temperature
Storage Temperature
Mechanical Shock
ESD
ENVIRONMENTAL SPECIFICATIONS
UNITS
KXPA4 Series
°C
°C
g
V
-40 to 85
7
CONDITION
Powered
Unpowered
Powered or unpowered,
0.5 msec halversine
Human body model
-55 to 150
4600
3000
Notes
1
The performance parameters are programmed and tested at 2.8 volts (KXPA4-1050) and 3.3V (KXPA4-2050). However, the
device can be factory programmed to accept supply voltages from 2.7 V to 5.25 V. Operation at reduced supply voltages,
down to 2.6 V, can be achieved by narrowing the operating temperature range. Performance parameters will change with
supply voltage variations.
Custom ranges from 1.5g to 6g available.
Temperature range for specified offset.
Lower bandwidth can be achieved by using the external C
2
, C
3
, and C
4
(see application note on page 3).
32K
Ω
resistor connects the output amplifier to the output pin. Resistive loading may reduce sensitivity or cause a shift in
offset. Maintaining a load resistance at 3.2M
Ω
will prevent appreciable changes.
The power-up time will increase or decrease according to bandwidth (5RC).
0g offset and sensitivity change linearly with temperature.
2
3
4
5
6
7
CAUTION:
ELECTROSTATIC
SENSITIVE COMPO-
NENT
© Kionix 2006
April 27, 2006
Page 2 of 3
Rev 0.5
KXPA4 Series Data Sheet
APPLICATION SCHEMATIC & PIN FUNCTION TABLES
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Tri-Axis Function
DNC
DNC
Vdd
GND
X Output
Z Output
Y Output
PS
Self Test
S1
S0
Vmux
DNC
DNC
1
2
3
Vdd
C
1
4
5
6
7
C
2
C
3
C
4
14
13
12
Vmux
S0
S1
ST
PS
KXPA4
11
10
9
8
KXPA4 Pin Descriptions
GND
– Ground
PS
— Power shutdown pin. When the PS pin is connected to GND or left floating, the KXPA4 is shutdown and drawing very little
power. When the PS pin is tied to Vdd, the unit is fully functional.
Self Test
— The output of a properly functioning part will increase when Vdd is applied to the self-test pin. When NOT in use,
this pin must be tied to ground.
SO
— MUX select
S1
— MUX select
Vdd
– Power supply
Vmux
— Multiplexed analog output
Application Design Equations
The bandwidth is determined by the filter capacitors connected from pins 3, 4 and 5 to ground. The response is single pole.
Given a desired bandwidth, f
BW
, the filter capacitors are determined by:
4 . 97
x
10
−
6
C
2
=
C
3
=
C
4
=
f
BW
Notes
1. Recommend using 0.1 µF for decoupling capacitor C
1
.
X Output
– Analog X output
Y Output
– Analog Y output
Z Output
– Analog Z output
FUNCTIONAL DIAGRAM
A
32K
5x5x1.2mm DFN PACKAGE
F
G
Output X
5
X
Sensor
C
2
Z
Sensor
Charge
Amplifier
32K
+Y
B
H
D
+Z
E
+X
Output Z
6
C
3
Y
Sensor
Self
Test
9
Vdd
3
Logic
MUX
32K
Output Y
7
Oscillator
C
4
Dimension Inches
+Z
C
+X
Millimeters
5.00
5.00
1.20
0.23
0.50
0.40
3.60
3.60
A
B
C
.197
.197
.047
.009
.020
.016
.142
.142
GND
4
Notes:
12
D
E
F
G
H
8
11
10
PS
S0 S1Vmux
1. When device is accelerated in +X, +Y or +Z
direction, the corresponding output will increase.
2. The packaged device weighs .079 grams.
ORDERING GUIDE
Product
KXPA4-1050
KXPA4-2050
CAUTION:
ELECTROSTATIC
SENSITIVE COMPO-
NENT
Axis(es) of
Sensitivity
XYZ
XYZ
Range
2g
2g
Sensitivity
(mV/g)
560
660
Offset (V)
1.40
1.65
Operating
Voltage (V)
2.8
3.3
Temperature
-40 to +85 °C
-40 to +85 °C
Package
5x5x1.2mm DFN
5x5x1.2mm DFN
© Kionix 2006
April 27, 2006
Page 3 of 3
Rev 0.5
Test/Measurement
京公网安备 11010802033920号
EEWORLD
