MXR9150G/M

Low Cost ±5 g Tri Axis Accelerometer with Ratiometric Outputs

Features

Low cost
RoHS compliant
Resolution better than 1 mg
Tri-axis accelerometer in a single package.
On chip mixed signal processing
No moving parts
No loose particle issues
>50,000 g shock survival rating
SMT package: 7mm X 7mm X 1.8mm
2.7V to 3.6V single supply continuous operation
No adjusting external components needed

Application

• GPS –
  Electronic Compass Tilt Correction
  Navigation
• Consumer –
  LCD projectors
  pedometers
  blood pressure monitor
  digital cameras
  MP3 players
• Information Appliances –
  Computer Peripherals
  PDA’s
  Mouse Smart Pens
  Cell Phones
• Gaming –
  Joystick
  RF Interface
  Menu Selection
  Tilt Sensing
• Security –
  Gas Line
  Elevator
  Fatigue Sensing

General Description

The MXR9150G/M is a low cost, tri axis accelerometer fabricated on a standard, submicron CMOS process. It is a complete sensing system with on-chip mixed signal processing. The MXR9150G/M measures acceleration with a full-scale range of ±5.0 g and a sensitivity of 150mV/g @3.0V at 25°C. It can measure both dynamic acceleration (e.g. vibration) and static acceleration (e.g. gravity). The MXR9150G/M design is based on heat convection and requires no solid proof mass. This eliminates stiction and particle problems associated with competitive devices and provides shock survival greater than 50,000 g, leading to significantly lower failure rate and lower loss due to handling during PCB assembly and at customer field application.

The MXR9150G/M provides three ratiometric analog outputs that are set to 50% of the power supply voltage at zero g.

The Max. noise floor is 1 mg/ allowing signals below 1mg to be resolved at 1 Hz bandwidth. The MXR9150G/M is packaged in a hermetically sealed, surface mount LCC 16pins package (7 mm x 7 mm x 1.8 mm height) and is operational over a -40°C to +85°C (M) and 0°C to +70°C (G) temperature range.

I2C fast mode interface is soon available in the next generation chip.