MICRF219AAYQS

Product Overview

MICRF219AAYQS from Microchip Technology is a low-power 300 MHz to 450 MHz ASK/OOK receiver. This receiver-oriented summary is written for engineers and sourcing teams that need a clear view of the receiver function, operating band and interface requirements.

The content focuses on architecture, RF band or radio standard, power/interface characteristics and practical design notes for BOM sourcing and replacement projects.

Key Features

• Manufacturer: Microchip Technology
• Part Number: MICRF219AAYQS
• Device Type: low-power 300 MHz to 450 MHz ASK/OOK receiver
• Receiver Architecture: 300 MHz to 450 MHz superheterodyne, image-reject ASK/OOK receiver with automatic gain control
• Frequency Range: 300 MHz to 450 MHz sub-GHz receiver band
• Modulation: ASK / OOK demodulation
• Data Rate: Up to 20 kbps class for MICRF219A/MICRF220 family receiver operation
• Receiver Sensitivity: -110 dBm class receiver sensitivity in Microchip selector data
• Supply Voltage: 3.0 V to 3.6 V operation
• Receive Current: 4.3 mA typical at 315 MHz class; current increases for 433.92 MHz operation
• Output / Interface: Serial data output with analog RSSI support on applicable variants
• Package / Case: 16-pin QSOP receiver package family
• Design Notes: Match the crystal/reference selection and ASK/OOK data filter bandwidth to the chosen regional channel.

Applications

Remote keyless entry, tire pressure monitoring, security sensors and low-power proprietary sub-GHz links.

Compact receiver modules that need a low external component count and serial data output in common 315 MHz or 433.92 MHz bands.

Quality & Sourcing

Antrex Electronics can support sourcing for MICRF219AAYQS through available stock checks, BOM consolidation and alternative-lot review. For RF receiver and radio receiver parts, package condition, lot/date code, moisture handling and original labeling should be checked before shipment.

For shortage support or legacy builds, Antrex Electronics can coordinate visual inspection, packaging verification and third-party electrical or authenticity testing when required. This helps buyers manage risk when sourcing discontinued, allocated or hard-to-find receiver ICs and modules.