MAX9987ETP+T

Overview

The MAX9987ETP+T is a silicon-based RF integrated circuit designed as a local oscillator buffer and splitter. It operates within a frequency range of 700 MHz to 1.1 GHz, suitable for cellular and GSM applications. The device provides 40 dB of reverse isolation to protect the source signal. It functions with a single 5 V power supply and draws a typical operating current of 221 mA. Packaged in a 20-lead TQFN with an exposed pad (5x5 mm), it supports surface-mount installation and operates reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Provides high reverse isolation to prevent signal feedback from the load to the local oscillator source.
• Functions as a buffer and splitter for local oscillator signals in wireless communication systems.
• Operates on a single 5 V power supply rail for simplified power management.

Applications

• Cellular base station and mobile handset local oscillator distribution
• GSM system signal buffering and splitting
• RF front-end module LO signal conditioning

Procurement Notes

Verify the specific suffix designation (+T) against the manufacturer's official datasheet to confirm tape-and-reel packaging and RoHS compliance status. Ensure the ordering part number matches the exact package variant required for your PCB layout. Cross-reference the component marking code with the manufacturer's identification guide to authenticate the device upon receipt.

Selection Notes

Select this component when a dedicated LO buffer or splitter is required for frequencies between 700 MHz and 1.1 GHz. It is appropriate for designs needing high reverse isolation to maintain oscillator stability. Consider the 20-TQFN footprint and thermal requirements during PCB layout. Verify that the 5 V supply voltage aligns with the system's power architecture before integration.

Part Context

The MAX9987 belongs to Analog Devices' Maxim Integrated portfolio of radio frequency integrated circuits. This series targets wireless communication infrastructure and mobile devices. The ETP+T suffix indicates a lead-free, tape-and-reel packaged version compliant with environmental standards. It serves as a specialized solution for managing local oscillator signals in multi-channel RF architectures.

FAQ

What is the specified frequency range for the MAX9987ETP+T?

The device operates effectively within a frequency range of 700 MHz to 1.1 GHz.

Does the MAX9987ETP+T support differential outputs?

The provided documentation describes it as a buffer/splitter but does not explicitly detail differential output configurations; refer to the full datasheet for pin-level output topology.