MAX2121BETI+

Overview

The MAX2121BETI+ is a direct-conversion tuner IC designed for satellite set-top and VSAT applications. It operates within an L-band frequency range of 925MHz to 2.175GHz. The device features a broadband I/Q downconverter, low-noise amplifier (LNA), RF variable-gain amplifier, and digitally controlled baseband filters with frequencies ranging from 40MHz to 124MHz. It utilizes a 28-TQFN (5x5) package and supports a supply voltage of 3.13V to 3.47V. The component functions across a temperature range of -40°C to +85°C.

Feature Summary

• Directly converts satellite signals from the LNB to baseband using a broadband I/Q downconverter architecture.
• Integrates programmable baseband filters allowing digital control over bandwidth settings.
• Includes integrated low-noise amplifier and RF variable-gain amplifier stages.

Applications

• Satellite set-top box systems
• VSAT communication terminals
• L-band signal reception modules

Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distributors. Confirm RoHS compliance status and lead times directly with suppliers, as availability may be restricted. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly. Cross-reference datasheet revisions to confirm pinout compatibility with existing designs.

Selection Notes

Select this component for applications requiring direct conversion of L-band satellite signals to baseband. Consider the integrated programmable baseband filter capabilities for simplified system design. Evaluate the operating voltage range and thermal performance against specific environmental constraints. Verify that the 28-TQFN package footprint aligns with PCB layout specifications.

Part Context

This part belongs to the MAX2121 family of RF tuners manufactured by Analog Devices Inc./Maxim Integrated. It is categorized under RF IC Tuners intended for VSAT and satellite communications. The device represents a solution for integrating LNA, mixer, and filter functions into a single compact package, reducing overall system complexity in satellite receiver architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for potential obsolescence notices or recommended upgrades.