MAX2021ETX+T

Overview

The MAX2021ETX+T is a high-dynamic-range, direct up/downconversion quadrature modulator and demodulator designed for wireless communication systems. It operates within a frequency range of 650 MHz to 1.2 GHz, supporting standards such as CDMA, EDGE, and GSM. The device integrates wideband I/Q modulation capabilities with sigma-delta architecture. It functions on a supply voltage between 2.7 V and 3.6 V, drawing approximately 107 mA. The component is housed in a 36-lead TQFN (6x6 mm) package suitable for surface mount installation.

Feature Summary

• Integrates wideband quadrature modulation and demodulation functions in a single chip
• Supports direct up-conversion and down-conversion architectures
• Utilizes sigma-delta technology for enhanced signal processing performance

Applications

• CDMA cellular base stations and handsets
• EDGE mobile communication devices
• GSM network infrastructure equipment

Procurement Notes

Verify the specific suffix (+T) indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the part number matches the exact 36-lead TQFN variant required for your PCB layout. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component for applications requiring integrated up/downconversion within the 650 MHz to 1.2 GHz band. It is suitable for designs needing support for multiple cellular standards including CDMA, EDGE, and GSM. Consider the 36-lead TQFN package size for space-constrained layouts. Verify power supply requirements align with the 2.7 V to 3.6 V operating range before integration.

Part Context

This device belongs to the MAX2021 series of RF transceivers from Analog Devices/Maxim Integrated. It is part of a family of solutions targeting wireless infrastructure and mobile terminals. The ETI+T designation specifies the lead-free, tape-and-reel version of the component. It complements other RF front-end modules by providing baseband-to-RF conversion capabilities.

Replacement Considerations

Check for MAX2021 variants with different package options if pinout compatibility is critical. Verify functional equivalence with older generation Maxim modulators if migrating legacy designs. Ensure substitute parts support the same frequency range and modulation formats.