MICRF405YML

RF Transmitter Overview

The MICRF405YML is an RF transmitter IC designed for ISM band operations across 290MHz to 980MHz. It supports ASK and FSK modulation protocols with a maximum data rate of 200kbps. The device delivers +10dBm output power and operates on a supply voltage range of 2.2V to 3.6V. It features a transmit current of 18mA and is housed in a compact 24-VFQFN package (4mm x 4mm) with exposed pad. The component functions within a temperature range of -40°C to 125°C.

RF Transmitter Feature Summary

• Integrated PLL frequency synthesizer and power amplifier for reliable transmission
• Programmable modulation depth for ASK and FSK signaling modes
• PLL lock detect circuit ensures stable frequency operation
• Compact surface-mount packaging suitable for space-constrained designs

RF Transmitter Applications

• ISM band wireless communication systems
• Remote control interfaces
• Low-power telemetry devices
• Wireless sensor networks

RF Transmitter Procurement Notes

Verify the manufacturer designation, as the component was originally produced by Micrel Inc. before acquisition by Microchip Technology. Confirm the specific suffix indicates tape and reel packaging if required for automated assembly. Ensure compatibility with RoHS3 standards and check moisture sensitivity level classifications for storage and handling requirements prior to procurement.

RF Transmitter Selection Notes

Select this component for applications requiring wide frequency coverage within the ISM bands without external synthesizers. Consider the 24-pin QFN footprint for PCB layout constraints. Evaluate the 2.2V to 3.6V operating range against system power budgets. Verify that the 200kbps data rate meets application throughput needs.

RF Transmitter Part Context

This part belongs to the MICRF405 family of radio transceivers. It represents a single-chip solution combining frequency synthesis and power amplification. The series targets cost-sensitive wireless applications requiring minimal external components. The transition from Micrel to Microchip maintains technical continuity for existing designs.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.