MAX275AEWP+

Overview

The MAX275AEWP+ is a monolithic, low-power voltage-controlled oscillator (VCO) designed for IEEE 802.11b wireless LAN applications operating in the 2.4GHz ISM band. It integrates an on-chip varactor and LC tank to achieve frequency tuning via a single control voltage input. The device operates from a supply voltage range of 2.7V to 5.5V with a typical current consumption of 21mA. It provides an output power of -3dBm at 2.4GHz with a phase noise of -235dBc/Hz at a 1MHz offset. The component is housed in a compact UCSP package measuring 3.05mm x 3.05mm x 0.95mm.

Feature Summary

• Integrated LC tank and varactor eliminate external resonant components
• Single-control-voltage tuning simplifies PLL loop filter design
• Low power consumption suitable for battery-operated portable devices

Applications

• IEEE 802.11b Wireless LAN transceivers
• ISM Band communication systems
• Bluetooth modules
• Wireless sensor networks

Procurement Notes

Verify the specific suffix 'A' against the manufacturer's official datasheet to confirm temperature grade and pinout compatibility. Ensure the UCSP-8 package footprint matches your PCB layout requirements. Confirm RoHS compliance status through the latest product documentation before finalizing procurement.

Selection Notes

Select this component when a fully integrated VCO solution is required to minimize board space and reduce BOM complexity. It is appropriate for designs needing stable oscillation within the 2.4GHz band without external inductors or capacitors. Consider the 21mA current draw relative to system power budgets.

Part Context

This part belongs to the MAX274/MAX275 family of CMOS RF transceivers. While the MAX274 includes a receiver section, the MAX275 focuses specifically on the transmitter's local oscillator generation. Both share similar packaging and interface characteristics for unified system integration.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.