Details, datasheet, quote on part number: MMA7361LC
PartMMA7361LC
CategorySensors => Velocity Sensors => Acceleration Sensors
Description±1.5g, ±6g Three Axis Low-g
Micromachined Accelerometer
The MMA7361LC is a low power, low profile capacitive micromachined
accelerometer featuring signal conditioning, a 1-pole low pass filter,
temperature compensation, self test, 0g-Detect which detects linear freefall,
and g-Select which allows for the selection between two sensitivities. Zero-g
offset and sensitivity are factory set and require no external devices. The
MMA7361LC includes a Sleep Mode that makes it ideal for handheld battery
powered electronics.
CompanyMotorola Semiconductor Products
DatasheetDownload MMA7361LC datasheet
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Features, Applications
Freescale Semiconductor Data Sheet: Technical Data

The is a low power, low profile capacitive micromachined accelerometer featuring signal conditioning, a 1-pole low pass filter, temperature compensation, self test, 0g-Detect which detects linear freefall, and g-Select which allows for the selection between two sensitivities. Zero-g offset and sensitivity are factory set and require no external devices. The MMA7361LC includes a Sleep Mode that makes it ideal for handheld battery powered electronics. Features 1.0mm LGA-14 Package Low Current Consumption: 400 A Sleep Mode: 3 A Low Voltage Operation: 3.6 V High Sensitivity (800 mV/g @ 1.5g) Selectable Sensitivity (±1.5g, ±6g) Fast Turn On Time (0.5 ms Enable Response Time) Self Test for Freefall Detect Diagnosis 0g-Detect for Freefall Protection Signal Conditioning with Low Pass Filter Robust Design, High Shocks Survivability RoHS Compliant Environmentally Preferred Product Low Cost

Typical Applications 3D Gaming: Tilt and Motion Sensing, Event Recorder HDD MP3 Player: Freefall Detection Laptop PC: Freefall Detection, Anti-Theft Cell Phone: Image Stability, Text Scroll, Motion Dialing, eCompass Pedometer: Motion Sensing PDA: Text Scroll Navigation and Dead Reckoning: eCompass Tilt Compensation Robotics: Motion Sensing

Part Number MMA7361LCR1 MMA7361LCR2 Temperature Range to +85°C Package Drawing 1977-01 Package LGA-14 Shipping Tray 7" Tape & Reel 13" Tape & Reel

Figure 2. Simplified Accelerometer Functional Block Diagram

Table 1. Maximum Ratings (Maximum ratings are the limits to which the device can be exposed without causing permanent damage.)

Rating Maximum Acceleration (all axis) Supply Voltage Drop Test
Storage Temperature Range 1. Dropped onto concrete surface from any axis.

WARNING: This device is sensitive to electrostatic discharge. Although the Freescale accelerometer contains internal 2000 V ESD protection circuitry, extra precaution must be taken by the user to protect the chip from ESD. A charge of over 2000 volts can accumulate on the human body or associated test equipment. A charge of this magnitude can alter the performance or cause failure of the chip. When handling the accelerometer, proper ESD precautions should be followed to avoid exposing the device to discharges which may be detrimental to its performance.

Table 2. Operating Characteristics Unless otherwise noted: V < VDD 3.6 V, Acceleration = 0g, Loaded output(1)

Characteristic Operating Range Supply Voltage(3) Supply Current(4) Supply Current at Sleep Mode(4) Operating Temperature Range Acceleration Range, X-Axis, Y-Axis, Z-Axis g-Select: 0 g-Select: 1 Output Signal Zero-g (TA = 25°C, VDD Z(7) Zero-g(4) Sensitivity (TA = 25°C, VDD 6g Sensitivity(4) Bandwidth Response XY Z Output Impedance 0g-Detect Self Test Output Response XOUT, YOUT ZOUT Input Low Input High Noise Power Spectral Density RMS 1 kHz)(4) Control Timing Power-Up Response Time(8) Enable Response Time(9) Self Test Response Time(10) Sensing Element Resonant Frequency XY Z Internal Sampling Frequency Output Stage Performance Full-Scale Output Range (IOUT = 3 µA) Nonlinearity, XOUT, YOUT, ZOUT Cross-Axis Sensitivity(11)

gSTXY gSTZ VIL VIH nPSD tRESPONSE tENABLE tST fGCELLXY fGCELLZ fCLK VFSO NLOUT VXY, XZ, YZ

1. For a loaded output, the measurements are observed after an RC filter consisting of an internal 32 k resistor and an external 3.3 nF capacitor (recommended as a minimum to filter clock noise) on the analog output for each axis and a 0.1F capacitor on VDD - GND. The output sensor bandwidth is determined by the Capacitor added on the output. 3.3 nF corresponds = 1507 HZ, which is the minimum to filter out internal clock noise. 2. These limits define the range of operation for which the part will meet specification. 3. Within the supply range of 2.2 and 3.6 V, the device operates as a fully calibrated linear accelerometer. Beyond these supply limits the device may operate as a linear device but is not guaranteed be in calibration. 4. This value is measured with g-Select in 1.5g mode. 5. The device can measure both + and ­ acceleration. With no input acceleration the output is at midsupply. For positive acceleration the output will increase above VDD/2. For negative acceleration, the output will decrease below VDD/2. 6. For optimal 0g offset performance, adhere to AN3484 and AN3447 7.Product performance will not exceed this minimum level, however measurement over time will not be equal to time zero measurements for this specific parameter. 8. The response time between 10% of full scale VDD input voltage and 90% of the final operating output voltage. 9. The response time between 10% of full scale Sleep Mode input voltage and 90% of the final operating output voltage. 10. The response time between 10% of the full scale self test input voltage and 90% of the self test output voltage. 11. A measure of the device's ability to reject an acceleration applied 90° from the true axis of sensitivity.


 

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