InvenSense ITG-3200 Integrated 3-Axis Digital Output Gyroscope Sensor IC

The ITG-3200 is the world’s first single-chip, digital-output, 3-axis MEMS gyro optimized for gaming, 3D mice, and motion-based remote control applications for Internet connected Digital TVs and Set Top Boxes. The ITG-3200 features three 16-bit analog-to-digital converters (ADCs) for digitizing the gyro outputs, a user-selectable internal low-pass filter bandwidth, and a Fast-Mode I²C (400kHz) interface. Additional features include an embedded temperature sensor and a 2% accurate internal oscillator. This breakthrough in MEMS motion processor gyro technology provides a dramatic 60% package size reduction, delivers a 60% power reduction, and has inherent cost advantages compared to competing multi-chip gyro solutions.

By leveraging the patented and volume-proven Nasiri-Fabrication platform, which integrates MEMS wafers with companion CMOS electronics through wafer-level bonding, InvenSense has driven the ITG-3200 package size down to a revolutionary footprint of 4x4x0.9mm (QFN), while providing the highest performance, lowest noise, and the lowest cost semiconductor packaging required for handheld consumer electronic devices. The part features a robust 10,000g shock tolerance, as required by portable consumer equipment.

For enhanced power supply flexibility, the ITG-3200 offers a separate VLOGIC reference pin in addition to its analog supply pin, which sets the logic levels of its I²C interface. The VLOGIC voltage may be anywhere from 1.71V min to VDD max.

Features

• Digital-output X-, Y-, and Z-Axis angular rate sensors (gyros) on one integrated circuit with a sensitivity of 14 LSBs per °/sec and a full-scale range of ±2000°/sec
• Three integrated 16-bit ADCs provide simultaneous sampling of gyros while requiring no external multiplexer
• Digitally-programmable low-pass filter
• Fast Mode I²C (400kHz) serial interface
• Low 6.5mA operating current for long battery life
• Wide VDD supply voltage range of 2.1V to 3.6V
• Flexible VLOGIC reference voltage allows for I²C interface voltages from 1.71V to VDD
• Standby current: 5µA
• Smallest and thinnest package for portable devices (4x4x0.9mm QFN)
• Turn on time: 50ms
• Digital-output temperature sensor
• Factory calibrated scale factor
• On-chip temperature sensor
• 10,000 g shock tolerant
• On-chip timing generator clock frequency is accurate to +/-2% over full temperature range
• MEMS structure hermetically sealed and bonded at wafer level
• RoHS and Green compliant

Applications

• Motion-enabled game controllers
• Motion-based portable gaming
• 3D remote controls for Internet connected DTVs and Set Top Boxes
• Motion-based 3D mice
• Remote health monitoring
• Sports and fitness

ITG-3200 Block Diagram

Documentations

• ITG-3200 Product Specification v1.7
• ITG-3200 Register Map v1.0
• ITG-3200 Evaluation Board User Guide v1.1
• InvenSense ARM Reference Board Application Note v1.2