MAX11801ETC/V+

Overview

The MAX11801ETC/V+ is a low-power, ultra-small resistive touch-screen controller from the MAX11800–MAX11803 family. It operates on a single supply of 1.7V to 3.6V and features a 12-bit SAR ADC with an internal multiplexer for interfacing with 4-wire resistive touch screens. The device supports I²C/SMBus communication at up to 400kHz. Key capabilities include direct and autonomous operating modes, data tagging for measurement and event information, and digital preprocessing to reduce bus loading. It includes programmable touch-detect pullup resistors and auto power-down control for optimized energy efficiency in portable applications.

Feature Summary

• 12-Bit SAR ADC with 4-Wire Touch-Screen Interface
• I²C Serial Bus Interface (400kHz)
• Direct and Autonomous Operating Modes
• Data Tagging for Measurement and Touch Event Information
• Low-Power Operation: 343µW at 1.7V, 34.4ksps

Applications

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

Procurement Notes

Verify the '/V' suffix indicates automotive qualification (-40°C to +105°C) as per the datasheet. Confirm package type is 12-pin TQFN-EP. Check RoHS compliance status (+ denotes lead-free). Ensure interface requirements match I²C support, as SPI variants are distinct models within the same family.

Selection Notes

Select this model specifically for I²C interface compatibility; SPI versions require different part numbers (MAX11800/MAX11802). Choose the '/V' suffix if operation above +85°C up to +105°C is required. Consider Autonomous Mode availability only if using MAX11801 or MAX11800 variants. Verify power consumption needs against the 343µW/888µW specifications at respective voltages.

Part Context

Part of the MAX11800–MAX11803 series designed for power-sensitive handheld equipment. The MAX11801 variant specifically supports I²C/SMBus, distinguishing it from the SPI-supported MAX11800 and MAX11802. The ETC package denotes a 12-pin TQFN-EP, while the /V suffix specifies automotive temperature range qualification.

Replacement Considerations

Direct functional substitutes within the same family include MAX11800ETC/V+, MAX11802ETC/V+, and MAX11803ETC/V+. Note that MAX11800/MAX11802 use SPI, while MAX11803 uses I²C like the MAX11801. Package variations exist (WLP vs TQFN), but electrical pinouts may differ; verify schematic compatibility before substitution.