MAX11800-MAX11803 low-power touch-screen controllers
The MAX11800–MAX11803 series are low‑power resistive touch‑screen controllers designed for handheld and portable applications. They operate from a single 1.7 V to 3.6 V supply and include a 12‑bit SAR ADC, on‑chip multiplexer, and digital preprocessing to reduce bus load and processor overhead.
Key features include direct and autonomous operation modes, data‑tagging of measurement and touch events, programmable pull‑up resistors, auto power‑down, and support for both SPI (up to 25 MHz) and I²C (up to 400 kHz) interfaces. The devices are offered in 12‑pin TQFN and 12‑pin WLP packages and are qualified for industrial temperature ranges.
| Supply Voltage (VDD) | 1.7 V – 3.6 V |
|---|---|
| ADC Resolution | 10‑bit (no missing codes) to 11‑bit |
| Throughput | 105 ksps |
| FIFO Depth | 1024‑bit (16‑bit words) |
| SPI Clock Frequency | 25 MHz |
It operates from a single supply of 1.7 V to 3.6 V.
The devices support both SPI (up to 25 MHz) and I²C (up to 400 kHz) interfaces.
The ADC provides a 10‑bit resolution with no missing codes, and can be configured to 11‑bit.