Microchip Technology, Inc. RF and Wireless - RF Transceiver ICs ATA5824C-PLQW

The ATA5824C-PLQW is a highly integrated UHF ASK/FSK transceiver IC designed for low power consumption, packaged in a compact 7mm x 7mm QFN48 format. It operates in the 433.92MHz band and supports data rates from 1Kbit/s to 20Kbit/s for FSK and 1Kbit/s to 10Kbit/s for ASK modulation. The device features high sensitivity levels, with FSK sensitivity reaching ,Äì105.5dBm at 20Kbit/s and ASK sensitivity at ,Äì111.5dBm at 10Kbit/s. The transceiver incorporates a low IF architecture that enhances selectivity and blocking performance, eliminating the need for bulky SAW filters in key fob applications. It includes an integrated RX/TX switch, a fractional-N synthesizer for modulation, and a FIFO buffer for data handling, which reduces the processing load on the microcontroller. The power amplifier achieves up to 38% efficiency, and the device operates over a supply voltage range of 2.15V to 5.25V, with a low power-down current of less than 10nA. Applications for the ATA5824C-PLQW include automotive keyless entry systems, tire pressure monitoring, remote control systems, and home automation. Its robust design and high integration level make it suitable for various wireless communication tasks while minimizing external component requirements.