MAX3518ETP+TG2Z

Overview

The MAX3518ETP+TG2Z is a DOCSIS 3.0 compliant CATV upstream amplifier IC operating from a single +5V supply. It covers an input frequency range of 5MHz to 85MHz with a 275MHz, 3dB bandwidth. The device provides 63dB of gain control in 1dB steps via a SPI interface and supports four power codes for current optimization. It features differential inputs (200Ω) and outputs requiring an external balun. Key electrical parameters include a typical noise figure of 11dB, -60dBc harmonic distortion at 64dBmV output, and a maximum dissipation of 1.25W.

Feature Summary

• Integrated programmable-gain amplifier designed for DOCSIS 3.0 cable modem applications
• Differential Class A output stage architecture providing superior even-order distortion performance
• Four selectable power codes allowing bias current reduction based on specific linearity requirements
• Ultra-low power consumption in transmit-disable mode to minimize heat generation between bursts

Applications

• DOCSIS 3.0 Cable Modems
• VOIP Modems
• Set-Top Boxes

Procurement Notes

Verify the component matches the exact part number MAX3518ETP+TG2Z. Confirm that the package type corresponds to the 20-pin thin QFN with exposed pad. Ensure the temperature rating aligns with the extended industrial range specifications. Cross-reference the manufacturer details to confirm Analog Devices Inc./Maxim Integrated origin. Validate RoHS compliance status through official documentation.

Selection Notes

Select this component when designing systems requiring strict adherence to DOCSIS 3.0 upstream transmission standards. Consider the requirement for an external balun transformer due to the differential output configuration. Evaluate the need for thermal management solutions given the 1.25W power dissipation capability. Assess the suitability of the SPI control interface for the system's microcontroller or DSP architecture.

Part Context

This integrated circuit belongs to the Maxim Integrated product family, now under Analog Devices Inc. It is specifically engineered for cable television upstream signal amplification. The device utilizes SiGe BiCMOS process technology to achieve high performance within a compact footprint. It serves as a critical active component in modern hybrid fiber-coaxial network infrastructure.

Replacement Considerations

Public confirmed substitute part numbers include MAX3518ETP+G2Z, MAX3518ETP+T, and MAX3518ETP+TG2Z.