General Description
The MAX11800–MAX11803 low-power touch-screen controllers operate from a single supply of 1.70V to 3.6V, targeting power-sensitive applications such as handheld equipment. The devices contain 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 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
♦ 25MHz SPI Interface (MAX11800/MAX11802)
♦ 400kHz I2C Interface (MAX11801/MAX11803)
♦ 1.6mm x 2.1mm, 12-Pin WLP and 4mm x 4mm, 12-Pin TQFN
♦ Low-Power Operation 343µW at VDD= 1.7V, 34.4ksps 888µW at VDD= 3.3V, 34.4ksps
♦ ESD Protection ±4kV HBM ±8kV HBM (X+, X-, Y+, Y-) ±1kV CDM ±200V MM

Applications
    Mobile Communication Devices
    PDAs, GPS Receivers, Personal Navigation Devices, Media Players
    Portable Instruments
    POS Terminals
    Handheld Games
    Automotive Center Consoles