MMA7455LT Freescale Semiconductor, MMA7455LT Datasheet - Page 29

• Manufacturer Part Number: MMA7455LT
• Description: Board Mount Accelerometers 3-AXIS DIGITAL 2 4 8G
• Manufacturer: Freescale Semiconductor

Specifications of MMA7455LT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.4 V
• Supply Current: 400 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Sensitivity: 64 LSB/g
• Package / Case: LGA-14
• Output Type: Digital
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Sensor Case Style: LGA
• No. Of Pins: 14
• Supply Voltage Range: 2.4V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Ic Interface Type: I2C, SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS
Surface mount board layout is a critical portion of the total design. The footprint for the surface mount packages must be the
correct size to ensure proper solder connection interface between the board and the package.
With the correct footprint, the packages will self-align when subjected to a solder reflow process. It is always recommended to
design boards with a solder mask layer to avoid bridging and shorting between solder pads.
SOLDERING AND MOUNTING GUIDELINES FOR THE LGA ACCELEROMETER SENSOR TO A PC BOARD
These guideline are for soldering and mounting the LGA package inertial sensors to printed circuit boards (PCBs). The purpose
is to minimize the stress on the package after board mounting. The MMA7455L digital output accelerometer uses the Land Grid
Array (LGA) package platform. This section describes suggested methods of soldering these devices to the PC board for con-
sumer applications.
Sensors
Freescale Semiconductor
Figure 18
Figure 18. Recommended PCB Land Pattern for the 5 x 3 mm LGA Package
shows the recommended PCB land pattern for the package.
MMA7455L
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