PCAP04-AQFT-24

ADCs/DACs - Special Purpose Overview

The PCAP04-AQFT-24 is a specialized integrated circuit belonging to the PICOCAP® series, manufactured by ScioSense. It functions as a capacitive digital converter with six channels and a 20-bit resolution. The device supports I2C and SPI data interfaces and operates on a single power supply ranging from 2.1V to 3.6V. Housed in a 24-VFQFN package with exposed pad (4x4 mm), it is designed for surface mount installation. The component is rated for an operating temperature range of -40°C to 125°C and holds MSL level 3 certification.

ADCs/DACs - Special Purpose Feature Summary

• Six-channel capacitive digital conversion with 20-bit resolution
• Dual interface support for I2C and SPI protocols
• Wide operating voltage range of 2.1V to 3.6V on a single supply
• Industrial temperature rating spanning -40°C to 125°C

ADCs/DACs - Special Purpose Applications

• Capacitive sensing applications requiring high-resolution measurement
• Integration into systems utilizing I2C or SPI communication buses
• Environmental monitoring devices operating in extreme temperatures

ADCs/DACs - Special Purpose Procurement Notes

This component is listed as discontinued or no longer provided by DigiKey. Current stock levels are zero, and backordering is not accepted due to temporary supply constraints. Delivery timelines are uncertain. Verification of alternative sources or end-of-life status through official manufacturer channels is required before procurement planning.

ADCs/DACs - Special Purpose Selection Notes

Designers should verify compatibility with the 2.1V to 3.6V supply voltage range and ensure the system architecture supports either I2C or SPI interfaces. The 24-QFN package requires appropriate PCB layout considerations for thermal dissipation and soldering. Given the discontinued status, long-term availability must be assessed against project lifecycle requirements.

ADCs/DACs - Special Purpose Part Context

The PCAP04-AQFT-24 is part of the PICOCAP® family of capacitive-to-digital converters. This series is engineered for precision capacitance measurement, offering high resolution suitable for detecting minute changes in capacitive sensors. The specific model integrates multiple channels within a compact footprint, targeting applications where space and accuracy are critical constraints.

ADCs/DACs - Special Purpose Replacement Considerations

As this part is discontinued, direct substitutes may not exist. Engineers should evaluate other PICOCAP® models or comparable capacitive ADCs from ScioSense or alternative manufacturers that offer similar channel counts, resolution, and interface options.