PART NUMBER:
± 3g Tri-axis Accelerometer
Specifications
Product Description
KXSS5-2057
Rev. 4
Feb-2013
The KXSS5-2057 is a Tri-axis, silicon micromachined accelerometer with a
full-scale output range of +/-3g (29.4 m/s/s). The sense element is
fabricated using Kionix’s proprietary plasma micromachining process
technology. Acceleration sensing is based on the principle of a differential
capacitance arising from acceleration-induced motion of the sense
element, which further utilizes common mode cancellation to decrease
errors from process variation, temperature, and environmental stress. The
sense element is hermetically sealed at the wafer level by bonding a
second silicon lid wafer to the device using a glass frit. A separate ASIC
device packaged with the sense element provides signal conditioning, self-
test, and temperature compensation. The accelerometer is delivered in a 5
x 3 x 0.9 mm LGA plastic package operating from a 1.8 – 3.6V DC supply. The ASIC will trigger
interrupt signals if an acceleration threshold is exceeded in any axis (motion interrupt), or if the total
acceleration falls below a threshold (freefall interrupt). The thresholds can be set by the customer or
default to factory calibrated values. Either I
2
C or SPI interfaces can be used to communicate to the chip
to trigger A/D conversions, set thresholds or threshold delays, or manage power consumption.
Functional Diagram
X
Sensor
Y
Sensor
Charge
Amp
1kHz
LPF
32K
32K
32K
7
8
9
Z
Sensor
Vdd
14
Enable
6
GND
10
2
Temp
Sensor
A/D
SPI/I
2
C/Logic
Interrupt Logic
3
4
5
11
12
36 Thornwood Dr. – Ithaca, NY 14850
tel: 607-257-1080 – fax:607-257-1146
www.kionix.com -
info@kionix.com
© 2013 Kionix – All Rights Reserved
585-4259-1302251530
Page 1 of 31
PART NUMBER:
± 3g Tri-axis Accelerometer
Specifications
Product Specifications
Table 1. Mechanical
(specifications are for operation at 3.3V and T = 25C unless stated otherwise)
Parameters
Units
Min
Operating Temperature Range
Zero-g Offset (analog)
Zero-g Offset (digital)
Zero-g Offset Variation from RT over Temp.
Sensitivity (analog)
Sensitivity (digital)
Sensitivity Variation from RT over Temp.
Offset Ratiometric Error (V
dd
= 3.3V ± 5%)
Sensitivity Ratiometric Error (V
dd
= 3.3V ± 5%)
Self Test Output change on Activation
Non-Linearity
Cross Axis Sensitivity
Noise Density (on filter pins)
Freefall threshold
1
Freefall delay
Motion threshold
1
Motion delay
1
KXSS5-2057
Rev. 4
Feb-2013
Typical
-
1.65
2048
0.6
440
546
0.01 (xy)
0.03 (z)
0.3
0.6 (xy)
0.3 (z)
2.8 (x)
2.6 (y)
2.1 (z)
0.1
2
175
0.4
4
2.5
4
Max
85
1.738
2157
453
562
ºC
V
counts
mg/ ºC
mV/g
counts/g
%/ ºC
%
%
g
% of FS
%
g
/ √Hz
g
ms
g
ms
-40
1.562
1939
427
530
1
Notes:
1. Factory default settings. User can adjust thresholds and delays using I C or SPI interface.
2
36 Thornwood Dr. – Ithaca, NY 14850
tel: 607-257-1080 – fax:607-257-1146
www.kionix.com -
info@kionix.com
© 2013 Kionix – All Rights Reserved
585-4259-1302251530
Page 2 of 31
PART NUMBER:
± 3g Tri-axis Accelerometer
Specifications
KXSS5-2057
Rev. 4
Feb-2013
Table 2. Electrical
(specifications are for operation at 3.3V and T = 25C unless stated otherwise)
Parameters
Units
Min
Supply Voltage (V
dd
)
Current Consumption
Operating
Operating
Standby
V
A
A
V
V
A
k
Hz
ms
s
MHz
kHz
1.8
600
-
0.8 * V
dd
24
800
Typical
3.3
800
0.0012
-
-
0
32
1000
0.8
200
1
400
Max
3.6
1000
0.2 * V
dd
-
40
1200
Input Low Voltage
Input High Voltage
Input Pull-down Current
Analog Output Resistance(R
out
)
1
Bandwidth (-3dB)
2
Power Up Time
A/D Conversion time
3
SPI Communication Rate
2
I C Communication Rate
Notes:
1. Internal 1 kHz low pass filter. Lower frequencies are user definable with external
capacitors.
2. Power up time is determined after the enabling of the part. The typical value reported is
when using the internal 1kHz low pass filter only. When a user defined low pass filter is
used, the power up time is 5 times the RC time constant of the filter.
3. SPI Communication Rate can be optimized for faster communication per the SPI timing
diagram below.
36 Thornwood Dr. – Ithaca, NY 14850
tel: 607-257-1080 – fax:607-257-1146
www.kionix.com -
info@kionix.com
© 2013 Kionix – All Rights Reserved
585-4259-1302251530
Page 3 of 31
PART NUMBER:
± 3g Tri-axis Accelerometer
Specifications
KXSS5-2057
Rev. 4
Feb-2013
KXSS5 SPI Timing Diagram
t
1
t
2
t
3
t
4
t
5
t
6
t
7
nCS
CLK
SDI
SDO
t
8
t
9
bit 7
bit 6
bit 1
5
bit 0
bit 7
5
bit 7
5
bit 6
bit 6
bit 1
5
bit 1
5
bit 0
bit 0
t
10
t
11
Table 3. SPI Timing
Number
-
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
t
10
t
11
Notes
Description
Enable transition from low to high after Vdd above 1.6V
nCS low to first CLK setup time
CLK pulse width: high (Does not apply to the last bit of a byte.)
CLK pulse width: low (Does not apply to the last bit of a byte.)
CLK pulse width: high (Only on last bit of a byte.)
CLK pulse width: low (Only on last bit of a byte.)
nCS low after the final CLK falling edge
nCS pulse width: high
SDI valid to CLK rising edge
CLK rising edge to SDI invalid
CLK falling edge to SDO valid
CLK falling edge to SDO invalid
Recommended SPI CLK
A/D conversion CLK hold (t
5
)
MIN
1
130
130
130
200
350
350
130
10
100
-
0
1
200
MAX
-
-
-
-
-
-
-
-
-
130
-
-
-
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
us
us
36 Thornwood Dr. – Ithaca, NY 14850
tel: 607-257-1080 – fax:607-257-1146
www.kionix.com -
info@kionix.com
© 2013 Kionix – All Rights Reserved
585-4259-1302251530
Page 4 of 31
PART NUMBER:
± 3g Tri-axis Accelerometer
Specifications
KXSS5-2057
Rev. 4
Feb-2013
Table 4. Environmental
Parameters
Supply Voltage (V
dd
)
Absolute Limits
Operating Temperature Range
Storage Temperature Range
Mech. Shock (powered and unpowered)
ESD
HBM
Units
V
ºC
ºC
g
V
Min
-0.3
-40
-55
-
-
Typical
-
-
-
-
-
Max
7.0
85
150
5000 for 0.5ms
2000
Caution: ESD Sensitive and Mechanical Shock Sensitive Component, improper handling can cause
permanent damage to the device.
This product conforms to Directive 2002/95/EC of the European Parliament and of the Council of the
European Union (RoHS). Specifically, this product does not contain lead, mercury, cadmium,
hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE)
above the maximum concentration values (MCV) by weight in any of its homogenous materials.
Homogenous materials are "of uniform composition throughout."
HF
This product is halogen-free per IEC 61249-2-21. Specifically, the materials used in this product
contain a maximum total halogen content of 1500 ppm with less than 900-ppm bromine and less than
900-ppm chlorine.
Soldering
Soldering recommendations are available upon request or from
www.kionix.com.
36 Thornwood Dr. – Ithaca, NY 14850
tel: 607-257-1080 – fax:607-257-1146
www.kionix.com -
info@kionix.com
© 2013 Kionix – All Rights Reserved
585-4259-1302251530
Page 5 of 31
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