2-channel proximity/touch sensor IC for passive RKE systems from Maxim

Maxim has unveiled the MAX1441, a fully integrated, 2-channel, proximity and touch sensor IC for automotive passive-entry (PRKE) and user-control systems. Maxim says that this device provides a complete, stand-alone solution that reduces system size and cost by at least 30% compared to the nearest competitive product.

The MAX1441 operates from a 5V to 28V supply. This IC features overvoltage protection up to 45V, as well as -12V reverse-voltage protection with an external diode. The MAX1441 features low-power operation of less than 100µA at 14V, long-range detection, integrated power regulation, overvoltage and reverse-voltage protections, and spread-spectrum antijamming technology. This IC has an embedded MAXQ microcontroller that offers ample memory to support user-customized algorithms.

The MAX1441 feature capacitive touch/proximity sensing for automotive applications. Applications such as passive-entry systems use capacitive sensing to allow the driver to lock/unlock the vehicle without removing the key from their pocket. Proximity/touch sensor systems typically employ 8-bit, general-purpose microcontrollers with ADCs and external discrete components to allow programming specialized functions like diagnostics, offset tracking, and communication protocols. The proximity/touch sensor systems use devices with sensing algorithms that are not user programmable, which prevents the inclusion of user-defined functionality.

Package: 20-pin TSSOP

Operating temperature range: -40°C to +105°C

Price: Starts at US$1.80

Availability: Now

For more information visit: www.maxim-ic.com/