LIS302ALB STMicroelectronics, LIS302ALB Datasheet - Page 8

• Manufacturer Part Number: LIS302ALB
• Description: ACCELEROMETER 3AXIS MEMS 14-LGA
• Manufacturer: STMicroelectronics

Specifications of LIS302ALB

• Axis: X, Y, Z
• Acceleration Range: ±2g
• Sensitivity: 0.145 x Vdd = V/g
• Voltage - Supply: 3 V ~ 3.6 V
• Output Type: Analog
• Bandwidth: 2kHz
• Interface: IC
• Mounting Type: Surface Mount
• Package / Case: 14-LGA
• Sensing Axis: X, Y, Z
• Acceleration: 2 g
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current: 0.65 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Shutdown: Yes
• For Use With: 497-8204 - BOARD ADAPTER LIS302SG DIL24497-8203 - BOARD DEMO LIS302SG497-6246 - BOARD EVAL ACCELEROM LIS302ALK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Mechanical and electrical specifications
8/17
over lifetime. The Zero-g level tolerance describes the range of Zero-g levels of a population
of sensors.
Self Test allows to check the sensor functionality without moving it. The Self Test function is
off when the ST pin is connected to GND. When the ST pin is tied at Vdd an actuation force
is applied to the sensor, simulating a definite input acceleration. In this case the sensor
outputs will exhibit a voltage change in their DC levels which is related to the selected full
scale and depending on the Supply Voltage through the device sensitivity. When ST is
activated, the device output level is given by the algebraic sum of the signals produced by
the acceleration acting on the sensor and by the electrostatic test-force. If the output signals
change within the amplitude specified inside Table 2, than the sensor is working properly
and the parameters of the interface chip are within the defined specification.
Output impedance describes the resistor inside the output stage of each channel. This
resistor is part of a filter consisting of an external capacitor of at least 2.5nF and the internal
resistor. Due to the resistor level, only small inexpensive external capacitors are needed to
generate low corner frequencies. When interfacing with an ADC it is important to use high
input impedance input circuitries to avoid measurement errors. Note that the minimum load
capacitance forms a corner frequency close to the resonance frequency of the sensor. In
general the smallest possible bandwidth for a particular application should be chosen to get
the best results.
LIS302ALB