STEVAL-MKI016V1 STMicroelectronics, STEVAL-MKI016V1 Datasheet - Page 3

• Manufacturer Part Number: STEVAL-MKI016V1
• Description: BOARD DEMO LIS344AL
• Manufacturer: STMicroelectronics
• Series: MEMSr

Specifications of STEVAL-MKI016V1

• Design Resources: STEVAL-MKI016V1 Gerber Files STEVAL-MKI016V1 Schematic STEVAL-MKI016V1 Bill of Material
• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±3.5g
• Interface: Analog
• Sensitivity: 0.100 x Vdd = V/g
• Voltage - Supply: 2.7 V ~ 3.3 V
• Embedded: No
• Utilized Ic / Part: LIS344AL
• Acceleration: 3.5 g
• Sensing Axis: Triple Axis
• Output Type: Analog
• Operating Voltage: 18 V
• Operating Current: 6 mA
• Silicon Manufacturer: STMicroelectronics
• Kit Contents: Board
• Features: Self-test Signals Through Use Of Jumper
• Svhc: No SVHC (15-Dec-2010)
• Core Architecture: Sensor
• Core Sub-architecture: Accelerometer
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8200

UM0536
1.1
Figure 3.
Operating the demonstration kit
To operate the demonstration kit it is necessary to supply it through the connector marked
J1 (PS) with a dc voltage between 3.7 V and 18 V. The suggested supply voltage is 5 V. The
typical current consumption of the LIS344AL MEMS sensor is 0.69 mA, while the typical
current consumption of the whole board is in the range of 6 mA.
The voltage applied to the board is then regulated through a linear voltage regulator which
supplies the MEMS sensor at 3 V.
The outputs (Vout
through the use of three 4.7 nF capacitors (Cx, Cy and Cz) which, together with the sensor’s
32 kΩ output resistor R
approximately 1 kHz.
If a different cut-off frequency f
with components having values derived using the following formula:
Equation 1
As mentioned above, the STEVAL-MKI016V1 makes both the direct sensor outputs and the
buffered signals available through two separate connectors: J4 (Sensor Output) and J3
(Buffered Output). Specifically, the three channels are made available from the left to right of
the board in the order Vout
The buffering of the sensor outputs is achieved through the use of a rail-to-rail low-noise
quad-amplifier configured as a non-inverting buffer.
STEVAL-MKI016V1 board photograph
x
, Vout
out
y
, create a single-pole low-pass filter with a cut-off frequency of
and Vout
x
, Vout
t
is required, the user should replace the above capacitors
y
C x y x
z
and Vout
(
) of the LIS344AL linear accelerometer are band limited
, ,
)
=
z
.
---------------------------------- -
2 π R
⋅ ⋅
1
out
⋅
f
t
Demonstration kit description
ref1
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