General Description
The MAX11811 low-power touch-screen controller operates from a 1.7V to 3.6V single supply targeting powersensitive applications such as handheld equipment. The device contains a 12-bit SAR ADC and a multiplexer to interface with a resistive touch-screen panel. A digital serial interface provides communications.

Features
♦ 4-Wire Touch-Screen Interface
♦ X/Y Coordinate Measurement and Touch Pressure
   Measurement
♦ Ratiometric Measurement
♦ 12-Bit SAR ADC
♦ Single 1.7V to 3.6V Supply
♦ Two Operating Modes—Direct and Autonomous
♦ Data Tagging Provides Measurement and Touch
   Event Information
♦ Data Filtering Provides Noise Reduction
♦ Aperture Mode Provides Spatial Filtering
♦ Digital Processing Reduces Bus Activity and
   Interrupt Generation
♦ Programmable Touch-Detect Pullup Resistors
♦ Auto Power-Down Control for Low-Power
   Operation
♦ General-Purpose Current DAC Output
♦ General-Purpose Input
♦ Integrated Proximity Sensing System
♦ Integrated Motor Haptic Driver*
♦ PWM Output for MAX11835 Haptic Piezo
   Controller† (HPC)
♦ 400kHz I2C Interface
♦ 20-Pin, 4mm x 4mm TQFN
♦ Low-Power Operation
   250µW at VDD = 1.7V, 34.4ksps
♦ ESD Protection
   Q8kV HBM (X+, X-, Y+, Y-)

  
Applications
   Mobile Communication Devices
   PDA, GPS Receivers, Personal Navigation
   Devices, Media Players
   Digital Still Camera
   Digital Video Camera
   Digital Photo Frame
   POS Terminals and Financial Terminals
   Handheld Games
   Automotive Center Consoles