MAX3518ETP+

Overview

The MAX3518ETP+ is an integrated CATV upstream amplifier IC designed for DOCSIS 3.0 applications, operating on a single +5V supply with a maximum power dissipation of 1.25W. It supports a 5MHz to 85MHz input frequency range and features a 275MHz 3dB bandwidth. The device provides 63dB of gain control in 1dB steps via a SPI interface and can transmit four QPSK carriers at +58dBmV simultaneously. It operates within an extended industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated programmable-gain amplifier with differential Class A output stage
• Four selectable power codes for optimized bias current management
• Low transient voltage during burst mode transitions
• Differential inputs and outputs requiring external balun

Applications

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

Procurement Notes

Verify the specific suffix ETP+ corresponds to the 20-pin TQFN-EP package and the -40°C to +85°C temperature grade. Confirm that the ordering information matches the exact lead-free/RoHS-compliant variant required for your design specifications before finalizing procurement.

Selection Notes

Select this component when designing DOCSIS 3.0 compliant upstream paths requiring low power consumption and precise digital gain control. Ensure the PCB layout accommodates the exposed pad for thermal management and includes the necessary external balun transformer for the differential-to-single-ended conversion.

Part Context

This part belongs to the Maxim Integrated (now Analog Devices) MAX3518 family of cable modem amplifiers. Originally developed by Maxim Integrated prior to its acquisition by Analog Devices, it serves as a specialized RF solution for hybrid fiber-coaxial network infrastructure.

Replacement Considerations

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