MAX11801GTC/V+T

Overview

The MAX11801GTC/V+T is a low-power, ultra-small resistive touch-screen controller from the MAX11800–MAX11803 family. It operates on a single supply of 1.70V to 3.6V and features a 12-bit SAR ADC with a multiplexer for interfacing with four-wire resistive touch panels. The device supports the I²C serial bus interface and includes digital preprocessing to reduce host processor load. It offers direct and autonomous operating modes, data tagging, and automatic power-down between conversions. The component is specified for an extended temperature range of -40°C to +105°C and is available in a 12-pin TQFN package.

Feature Summary

• I²C Serial Interface: Supports up to 400kHz communication protocol.
• Dual Operating Modes: Direct mode for host-controlled activity and autonomous mode for periodic scanning without host intervention.
• Digital Preprocessing: Includes data filtering, aperture mode for spatial filtering, and smart interrupt generation to minimize bus loading.
• Data Tagging: Records measurement type (X, Y, Z1, Z2) and touch event status (initial, continuing, release).
• Low-Power Operation: Automatically enters low-power modes between conversions; consumes 343µW at 1.7V and 34.4ksps.

Applications

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

Procurement Notes

Verify that the suffix '/V' indicates automotive qualification as per the datasheet ordering information. Confirm the '+T' designation corresponds to tape-and-reel packaging. Ensure the component meets RoHS compliance standards indicated by the '+' suffix. Cross-reference the specific lot codes against current manufacturing notices if long-term availability is required.

Selection Notes

Select this model specifically for applications requiring an I²C interface, as opposed to the SPI-based MAX11800 or MAX11802. Choose the GTC/V variant when an extended industrial/automotive temperature range (-40°C to +105°C) is necessary, distinguishing it from the standard commercial ETC variants limited to +85°C. Ensure the system design accommodates the 12-pin TQFN footprint.

Part Context

This part belongs to the MAX11800–MAX11803 series of low-power touch-screen controllers manufactured by Maxim Integrated (now Analog Devices Inc.). The series shares common core functionalities including the 12-bit SAR ADC and digital preprocessing blocks. The MAX11801 variant is distinct within the family due to its exclusive support for the I²C interface, whereas other members support SPI.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Designers should consult official replacement guides or contact the manufacturer for qualified alternatives.