MAX275AEWP+T

Overview

The MAX275AEWP+T is a monolithic voltage-controlled oscillator (VCO) designed for IEEE 802.11b WLAN applications operating at 2.4GHz. It integrates an LC tank, varactor, and buffer amplifier within a UCSP package. The device features a tuning voltage range of 0.4V to 2.4V and delivers -3dBm output power with -30dBc second harmonic suppression. Key electrical parameters include a phase noise of -235dBc/Hz, a drive of 1.3MHz/V, and a current consumption of 21mA.

Feature Summary

• Integrated LC tank and varactor for compact design
• On-chip buffer amplifier for signal integrity
• Optimized for low phase noise performance

Applications

• IEEE 802.11b wireless local area network (WLAN) transmitters
• 2.4GHz frequency synthesis systems
• Wireless communication modules requiring integrated VCO solutions

Procurement Notes

Verify the specific suffix 'A' against the official datasheet to confirm temperature grade and material compliance. Confirm the 'EWP' package designation matches the required UCSP footprint for PCB layout. Ensure the '+T' reel quantity aligns with production requirements before finalizing orders.

Selection Notes

Select this component when a fully integrated VCO solution is needed for 2.4GHz ISM band applications. Compare phase noise specifications against system requirements. Verify that the 21mA current draw fits within the overall power budget of the target device.

Part Context

This part belongs to the MAX274/MAX275 family of single-chip WLAN transceivers. The MAX275 variant specifically provides the voltage-controlled oscillator function, while the MAX274 includes additional receiver components. Both share similar packaging and interface characteristics.

Replacement Considerations

The MAX274 serves as a related component in the same family but lacks the complete VCO functionality found in the MAX275. Direct substitution requires verifying pin compatibility and functional equivalence for the specific RF chain position.