MAX2351EGI

Overview

The MAX2351EGI is a quadruple-mode RF LNA/mixer IC optimized for CDMA, GSM, and TDMA applications in cellular and PCS bands. It integrates signal paths for GPS to support E911 and traveler assistance without requiring an external GPS VCO or interstage SAW filter. The device features triple-band operation with ultra-low noise figures: 1.2dB for PCS, 0.9dB for Cellular, and 1.0dB for GPS. It operates within the 869MHz to 1.99GHz frequency range and is housed in a 28-TQFN (5x5) package.

Feature Summary

• Integrates dedicated GPS LNA/mixer path eliminating need for external VCO or SAW filters
• Supports multiple gain states including high-gain/high-linearity and ultra-low gain for dynamic range optimization
• Provides dual IF ports allowing flexible routing of cellular and PCS signals to different bandwidth filters

Applications

• CDMA cellular handsets
• GSM mobile devices
• TDMA communication systems
• E911 location services modules
• Traveler assistance navigation units

Procurement Notes

Verify the specific suffix 'EGI' corresponds to the 28-VFQFN exposed pad package and lead-free RoHS compliance status. Confirm the manufacturer designation as Analog Devices Inc., formerly Maxim Integrated, to ensure correct sourcing from authorized distributors. Check for active product status and availability of official datasheet revision 3 or later for accurate electrical specifications.

Selection Notes

Select this component when designing multi-mode transceivers requiring integrated GPS functionality without external filtering components. It is suitable for applications needing flexible IF architecture with dual outputs for varying bandwidth requirements. Consider the trade-off between current consumption and linearity across its five distinct gain modes for optimal system performance.

Part Context

This part belongs to the MAX2351/MAX2354/MAX2358 family of single- and multi-band LNA/mixers. These ICs are specifically engineered for wireless communication standards including CDMA, GSM, and TDMA. The family shares common architectural features such as multiple gain states and dual IF port flexibility, tailored for cellular and PCS band operations in mobile handsets.

Replacement Considerations

Public confirmed substitutes include MAX2354, MAX2358, MAX2359, MAX2530, MAX2531, MAX2537, and MAX2538. Verify pin compatibility and specific frequency coverage differences before substitution, particularly regarding GPS integration and IF port configurations.

FAQ

Does the MAX2351 require an external GPS voltage-controlled oscillator?

No, the device does not require an external GPS VCO.

How many independent IF ports does the MAX2351 provide?

It provides two IF ports for cellular/PCS signals and one dedicated IF port for the GPS band.

What is the noise figure for the cellular band?

The noise figure for the cellular band is 0.9dB.