MICRF405YML-TR

RF Transmitter Overview

The MICRF405YML-TR is a low-power RF transmitter IC from Microchip Technology, designed for unlicensed ISM band operations. It supports frequency ranges of 290MHz to 980MHz, covering North American 315/915MHz and European 433/868MHz bands. The device features ASK and FSK modulation with a maximum data rate of 200kbps. It delivers up to 10dBm output power across eight programmable levels. Operating on a supply voltage of 2.2V to 3.6V, it functions within a temperature range of -40°C to 125°C. Packaged in a 24-VFQFN (24-MLF) housing measuring 4mm x 4mm, it complies with FCC Part 15.247 and EN300-220 standards.

RF Transmitter Feature Summary

• Integrates a PLL frequency synthesizer, modulator, and high-efficiency power amplifier requiring minimal external components.
• Supports programmable ASK modulation depth and multiple FSK configurations for flexible protocol implementation.
• Includes built-in lock detection circuitry and TX buffer to ensure stable transmission performance.

RF Transmitter Applications

• Wireless meter reading systems
• Automotive electronics and remote keyless entry
• Home automation and smart home devices
• Remote control and industrial telemetry

RF Transmitter Procurement Notes

Verify the specific suffix 'YML' corresponds to the 24-MLF package variant when sourcing. Confirm RoHS3 compliance status as required by project specifications. Ensure the supplier provides valid traceability documentation for the Microchip Technology manufacturer origin. Cross-reference the DigiKey part number 576-1965-2-ND for accurate reel packaging details. Validate that the component meets the specified operating temperature range for the intended environment.

RF Transmitter Selection Notes

Select this component for applications requiring wideband coverage across global ISM frequencies without complex external tuning. The integrated power amplifier simplifies PCB layout by reducing passive component count. Consider the 200kbps data rate limit when designing communication protocols. The wide operating voltage range allows compatibility with various battery-powered systems. Verify thermal management requirements given the 125°C maximum junction temperature capability.

RF Transmitter Part Context

This part belongs to the RadioWire series of low-power wireless solutions. It serves as a specialized transmitter complementing other devices in the ecosystem. Originally developed by Micrel, production and support were transferred to Microchip Technology following acquisition. The design focuses on cost-effective integration for mass-market wireless applications.

RF Transmitter Replacement Considerations

MICRF103BM TR is identified as a predecessor model that has been discontinued. No direct public substitute part numbers are confirmed in the provided documentation. Evaluate system compatibility if migrating from older legacy designs.

RF Transmitter FAQ

What modulation types does the MICRF405YML-TR support?

The device supports Amplitude Shift Keying (ASK) and Frequency Shift Keying (FSK) modulation schemes.

Is the MICRF405YML-TR compliant with international radio standards?

Yes, it is designed to comply with FCC Part 15.247 and EN300-220 regulations for ISM band operation.