Cảm biến gia tốc, rung MMA8450Q

MMA8450Q Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer

New Technology: Cutting edge technology for the newest designs

Overview The MMA8450Q accelerometer is an intelligent low power and noise, 3 x 3 x 1 mm capacitive micromachined accelerometer featuring 12 bits of resolution. This accelerometer is packed with many flexible user programmable embedded functions that are available with two configurable interrupt pins. MMA8450Q has user selectable full scales of ±2g/±4g/±8g and it is capable of measuring accelerations with an Output Data Rate (ODR( of 400 Hz, 200 Hz, 100 Hz, 50 Hz, 12.5 Hz, and 1.563 Hz. These output data rates correspond to sample intervals from 2.5 ms to 640 ms. The device can be configured to generate inertial wake-up interrupt signals when a programmable acceleration threshold is crossed on any one of the three sensed axes. Acceleration and time thresholds of interrupt generators are programmable by the end user.MMA8450Q is available in a plastic QFN package and it is guaranteed to operate over the extended temperature range of -40°C to +85°C. Features 1.71 V to 1.89 V supply voltage ±2g/±4g/±8g dynamically selectable full-scale Output Data Rate (ODR) from 400 Hz to 1.563 Hz 400 µg/vHz noise at normal mode ODR = 400 Hz 12-bit digital output I2C digital output interface (operates up to 400 kHz Fast Mode) Programmable 2 interrupt pins for 8 interrupt sources Embedded 4 channels of motion detection Freefall or motion detection: 2 channels Pulse Detection: 1 channel Transient Detection: 1 channel Orientation (Portrait/Landscape) detection with hysteresis compensation Automatic ODR change for auto-wake and return-to-sleep 32 sample FIFO Self-Test 10,000 g high shock survivability RoHS compliant

Specifications Manufacturer Freescale Semiconductor Product Category Sensors Family Accelerometers RoHS Yes Sensing Axis X, Y, Z Acceleration 2 g, 4 g, 8 g Sensitivity 0.976 mg/digit, 1.953 mg/digit, 3.906 mg/digit Package / Case QFN-16 Output Type Digital Digital Output - Number of Bits 12 bit Supply Voltage 1.71 V ~ 1.89 V Supply Current 3 uA Shutdown Yes Operating Temperature -40°C ~ +85°C Packaging Tray Add to  Saturday, July 30, 2011 MMA8450Q Block Diagram