MAX9990ETP

Overview

The MAX9990ETP is a high-performance local oscillator buffer and splitter manufactured by Analog Devices Inc. under the Maxim Integrated brand. Designed for RF wireless applications, it operates within an input frequency range of 700 MHz to 1.1 GHz. The device supports a supply voltage between 4.75 V and 5.25 V with a typical operating current of 110 mA. It features low amplitude variation of +/-1dB and provides isolation of 40 dB. Packaged in a QFN-EP-20 surface-mount format, it functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Provides precise signal distribution with minimal amplitude variation
• Offers high isolation between output ports
• Supports wideband local oscillator frequencies
• Integrated thermal pad for enhanced heat dissipation

Applications

• Local oscillator buffering in communication systems
• Signal splitting for multi-channel RF architectures
• Wireless infrastructure equipment
• Test and measurement instrumentation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot codes against official documentation. Ensure storage conditions meet semiconductor handling standards to prevent moisture damage. Cross-reference ordering part numbers carefully as suffixes may indicate packaging variations. Request detailed test reports if required for critical application validation.

Selection Notes

Evaluate power consumption requirements against the specified 110 mA operating current. Assess thermal management needs given the 1.667 W power dissipation rating. Verify that the QFN-20 package footprint aligns with PCB layout constraints. Consider the 40 dB isolation specification for system interference mitigation. Ensure supply voltage stability remains within the 4.75 V to 5.25 V operational window.

Part Context

This component belongs to the MAX9990 series of RF wireless miscellaneous integrated circuits. It serves as a specialized buffer solution within the broader portfolio of Maxim Integrated radio frequency products. The device complements other LO drivers and splitters designed for modern wireless communication standards requiring stable signal distribution.

Replacement Considerations

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