MAX3520ETP+G2Z

Overview

The MAX3520ETP+G2Z is a DOCSIS 3.0 compliant cable upstream amplifier IC designed for CATV applications. It operates within a 5MHz to 85MHz input frequency range, featuring a 275MHz bandwidth. The device supports simultaneous transmission of four QPSK modulated carriers at +58dBmV. Key electrical parameters include a 63dB gain control range adjustable in 1dB steps via a SPI interface, and a single +5V supply voltage. Supply current varies with gain settings, drawing 360mA at 33dB gain and dropping to 5mA in transmit-disable mode. It is housed in a 20-pin TQFN package.

Feature Summary

• Integrated design exceeding DOCSIS 3.0 requirements for upstream amplification
• Differential input and output ports requiring external baluns
• Programmable gain control with automatic current reduction based on distortion needs
• Ultra-low power dissipation in transmit-disable mode

Applications

• DOCSIS 3.0 cable modem upstream signal processing
• CATV network upstream amplifier stages
• RF signal conditioning for hybrid fiber-coaxial systems

Procurement Notes

Verify the specific suffix G2Z against official Analog Devices documentation to confirm packaging and environmental compliance details. Ensure compatibility with required SPI control logic levels and external balun components for differential interfaces. Confirm availability status as distribution channels may indicate limited stock or discontinuation risks for this specific variant.

Selection Notes

Select this component when designing DOCSIS 3.0 compliant upstream paths requiring precise gain control and low standby power. The integrated nature reduces external component count compared to discrete solutions. Consider the requirement for external baluns due to differential I/O. Evaluate thermal management needs given the 20-pin TQFN package and operating temperature range specifications.

Part Context

This part belongs to the Maxim Integrated MAX3520 series of RF amplifiers. It is specifically engineered for cable television upstream applications, distinguishing itself from general-purpose RF amplifiers by its compliance with DOCSIS standards. The series focuses on integrating complex control logic and power management features into a compact form factor suitable for modern cable infrastructure.

Replacement Considerations

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