MICRF211AYQS

RF Receivers Overview

The MICRF211AYQS is a superheterodyne RF receiver designed for the 380MHz to 450MHz ISM band, operating on a single 3.0V to 3.6V supply. It features a typical sensitivity of -110dBm and supports data rates up to 10kbps with ASK/OOK modulation. The device integrates an image rejection mixer and provides an analog RSSI output without requiring an external IF filter. Packaged in a 16-QSOP surface-mount format, it operates within a temperature range of -40°C to +105°C and draws 6mA during reception.

RF Receivers Feature Summary

• Superheterodyne architecture with integrated image rejection mixer
• Analog RSSI output capability for signal strength monitoring
• No external IF filter required for operation
• Integrated shutdown mode for power management

RF Receivers Applications

• ISM band wireless communication systems
• Garage door opener receivers
• Remote Keyless Entry (RKE) systems

RF Receivers Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS and REACH compliance requirements for your region. Confirm that the active status aligns with long-term availability needs, as this part may be subject to lifecycle changes. Cross-reference the datasheet revision date to ensure compatibility with current design standards.

RF Receivers Selection Notes

Select this component when a low-power, high-sensitivity receiver is needed for sub-GHz ISM applications. It is suitable for designs requiring minimal external passive components due to the integrated mixer and lack of IF filter requirement. Consider the 16-QSOP package constraints for PCB layout. Verify that the 10kbps maximum data rate meets the system's throughput requirements before finalizing the selection.

RF Receivers Part Context

The MICRF211AYQS belongs to the QwikRadio family of receivers from Microchip Technology. This series targets cost-sensitive wireless applications by integrating key RF functions into a single chip. The AYQS variant specifically denotes the 16-lead QSOP package configuration. It serves as a direct replacement for older Micrel-branded units following the acquisition, maintaining functional equivalence for existing designs.

RF Receivers Replacement Considerations

The MICRF211AYQS-TR is the tape-and-reel version of this component, offering identical electrical performance but different packaging for automated assembly. Designers should verify pinout compatibility if substituting between tube and reel variants. No other cross-model replacements are officially documented in the provided source material.