CAP1296-1-SL

Overview

The CAP1296-1-SL is a six-channel capacitive touch sensor controller manufactured by Microchip Technology. It features programmable sensitivity, automatic recalibration for parasitic capacitance, and proximity detection with an optional signal guard. The device supports SMBus and I2C communication interfaces and operates within a supply voltage range of 3.0V to 5.5V. It offers multiple power states including Active, Standby, Combo, and Deep Sleep, with typical quiescent current as low as 5µA in Deep Sleep. The component is housed in a 10-pin 3mm x 3mm DFN package and is rated for operation from -40°C to 125°C.

Feature Summary

• Six individual capacitive touch sensor inputs with programmable sensitivity and automatic recalibration capabilities.
• Proximity detection functionality supported by an optional signal guard to reduce noise sensitivity and isolate the antenna.
• Multiple pattern touch recognition allowing simultaneous button detection with interrupt generation.
• Low power operation with distinct Active, Standby, Combo, and Deep Sleep states for optimized energy consumption.

Applications

• Desktop and Notebook PCs
• LCD Monitors
• Consumer Electronics
• Appliances

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and pin configuration. Confirm that the selected variant matches the required interface protocol and package type for your design. Cross-reference the datasheet revision history for any silicon errata or operational updates relevant to this part number before finalizing procurement.

Selection Notes

Select this component when a multi-channel capacitive touch solution with integrated proximity sensing is required. Ensure the host system supports SMBus or I2C protocols for communication. Consider the available power states to meet specific standby current requirements. Verify that the 10-pin DFN package fits the mechanical constraints of the target application board.

Part Context

The CAP1296 belongs to Microchip's family of capacitive touch sensor controllers designed for user interface applications. It provides a robust solution for detecting touch inputs and proximity events in environments requiring high noise immunity. The device integrates necessary calibration and filtering functions to maintain reliability across varying environmental conditions.

Replacement Considerations

Check for other members of the CAP12xx series such as the CAP1206 or CAP1208 if channel count differs. Verify pin compatibility and register mapping before substituting with similar touch sensor ICs from other manufacturers. Ensure the replacement supports the same communication protocols and power specifications.