MAX2903ETI+

RF Transmitter Overview

The MAX2903ETI+ is a single-chip RF transmitter IC designed for ETSI-compliant applications. It operates within the 867 MHz to 870 MHz frequency range and delivers an output power of 25 dBm (approximately 316 mW). The device is housed in a TQFN-EP package and supports an operating temperature range from -40°C to +85°C. This integrated solution simplifies the design of low-cost, high-performance wireless systems by combining essential RF components into a compact form factor.

RF Transmitter Feature Summary

• Single-chip integration for simplified circuit design
• Compliance with ETSI radio regulations
• High output power capability for extended range

RF Transmitter Applications

• Automatic Meter Reading (AMR)
• Wireless Building Control Systems
• Security Alarm Systems
• Data Networks and Sensors

RF Transmitter Procurement Notes

Verify the specific suffix 'ETI+' against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and RoHS compliance status. Ensure that the supplier provides valid traceability documentation. Cross-reference the part number with Analog Devices' current product lifecycle status to avoid obsolete components. Confirm that the received hardware matches the specified TQFN-EP package dimensions.

RF Transmitter Selection Notes

Select this component when designing systems requiring ETSI band operation around 868 MHz. It is suitable for applications needing moderate output power without complex external matching networks. Consider the thermal performance of the exposed pad package for high-power continuous transmission scenarios. Evaluate system requirements against the 25 dBm output limit to ensure compatibility with antenna specifications.

RF Transmitter Part Context

This part belongs to the MAX2903 series of RF transmitters manufactured by Maxim Integrated, now part of Analog Devices. The series targets sub-GHz ISM band applications, providing a cost-effective alternative to discrete RF solutions. The MAX2903ETI+ variant specifically denotes the tape-and-reel packaging format compatible with automated surface-mount assembly processes.

RF Transmitter Replacement Considerations

Consult Analog Devices official substitution guides for direct replacements. Verify compatibility with existing PCB footprints and firmware if upgrading within the same family.