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STK8BA53
Digital Output 3-axis MEMS Accelerometer
Datasheet
Version – 1.1
2016/9/19
STK8BA53 REV 1.1
www.sensortek.com.tw @copyright 2016 Sensortek Technology Corp.
1
1. OVERVIEW
Description
The STK8BA53 is a ±2g/±4g/±8g, 3-axis linear
accelerometer, with digital output (I
2
C). It is a low profile
capacitive MEMS sensor featuring, compensation for 0g
offset and gain errors, and conversion to 12-bit digital
values at user configurable samples per second.
The
device can
be arranged for sensor data changes through
the interrupt pins. The STK8BA53 is available in a small
2mm x 2mm x 1.0 mm LGA
package and it is
guaranteed to operate over an extended temperature
range from -40 °C to +85 °C.
Feature
Low Voltage Operation:
- Supply Internal Domain Voltage: 2.4V~3.6V
- I/O Voltage Range: 1.62V~3.6V
±2g/±4g±/8g dynamically selectable full-scale
I
2
C digital output interface
12 bit data output
10000 g high shock survivability
2mm x 2mm x 1.0 mm LGA Package
Configurable Samples from 14 to 2000 samples
per second
On-chip Interrupt-signal generator for New data
RoHS Compliant
Halogen Free
Environmentally Preferred Product
Moisture Sensitivity Level 3
Applications
Display orientation
Gaming and virtual reality input devices
Impact recognition and logging
Vibration monitoring and compensation
STK8BA53 REV 1.1
www.sensortek.com.tw @copyright 2016 Sensortek Technology Corp.
2
2. PIN DESCRIPTION
Pin#
Name Dir. Function
1
NC NC Not Internally Connected.
2 SDA B
Serial Data (
I
2
C
, Open-Drain)
3 VDDIO PWR Digital Interface Supply Voltage.
4 NC NC
Recommended tie to GND.
5 INT1 O Interrupt 1 Output.
6 NC NC Not Internally Connected.
7 VS PWR Supply Voltage.
8 GNDIO GND
Must be connected to ground.
9 GND GND Must be connected to ground.
10 NC NC Not Internally Connected.
11 NC NC
Not Internally Connected.
12 SCL I
Serial Communications Clock (
I
2
C
, Open-Drain)
Direction denotation:
O Output GND Ground
I Input B Bi-direction
PWR Power NC Not Connected
INT1
NC
SCL
NC
TOP VIEW
STK8BA53 REV 1.1
www.sensortek.com.tw @copyright 2016 Sensortek Technology Corp.
3
3. FUNCTION BLOCK
STK8BA53 REV 1.1
www.sensortek.com.tw @copyright 2016 Sensortek Technology Corp.
4
4. ELECTRICAL SPECIFICATIONS
T
A
= 25°C, VS = 2.6 V, VDDIO = 2.6 V, acceleration = 0 g, C
S
= C
I/O
= 10 µF and 0.1 µF
Parameter Test Conditions Min Typ Max Unit
POWER SUPPLY
Operating Voltage Range (VS) 2.4 2.6 3.6 V
Interface Voltage Range (VDDIO) 1.62 2.6 3.6 V
Current consumption in normal mode 138 µA
Current consumption in suspend mode 1 µA
Digital high level input voltage (VIH) 0.7 x VDDIO
V
Digital low level input voltage (VIL) 0.3 x VDDIO
V
High level output voltage (VOH)
1
0.8 x VDDIO
V
Low level output voltage (VOL)
1
0.2 x VDDIO
V
OUTPUT DATA RATE AND BANDWIDTH Each axis
Bandwidth (BW)
7.81 Hz
15.63
Hz
31.25
Hz
62.5 Hz
125 Hz
250 Hz
500 Hz
1000
Hz
Output data rate (ODR) in normal mode BW * 2
Hz
1. IOL = 10mA, IOH = -4mA
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