ISL1557AIRZ

Overview

The ISL1557AIRZ is a dual operational amplifier designed for VDSL2 and ADSL line driving in DMT-based solutions. It features a high drive capability of 750mA while consuming only 6mA of supply current per amplifier, operating from a single 4.5V to 12V or dual ±2.25V to ±6V supply. The device achieves typical distortion of -80dBc at 150kHz into a 25Ω load. It includes enhanced output protection against lightning transients and operates over the full -40°C to +85°C temperature range.

Feature Summary

• Enhanced output clamps provide stronger protection against lightning transients
• Dual control pins (C0 and C1) allow bias and enable/disable management for power optimization
• Current feedback architecture ensures stable bandwidth performance across varying temperatures

Applications

• VDSL2 line drivers
• ADSL2+ CPE line driving
• G.SHDSL and HDSL2 line drivers

Procurement Notes

Verify the specific package configuration and moisture sensitivity level before procurement. Confirm that the ordering suffix matches the required tape and reel specifications if bulk quantities are needed. Ensure compatibility with RoHS compliance standards and check for any recent product change notices regarding manufacturing updates.

Selection Notes

Select this component for applications requiring high differential output drive into low impedance loads. Consider the thermal pad connection requirements for optimal heat dissipation in the QFN package. Evaluate the available bias control options to balance performance and power consumption based on the specific line driver requirements.

Part Context

The ISL1557AIRZ belongs to the ISL1557A family of xDSL differential line drivers. It is manufactured by Renesas Electronics Corporation and utilizes a proprietary complimentary bipolar process. The device is specifically engineered to meet the stringent performance and reliability standards required for modern digital subscriber line communication systems.

Replacement Considerations

ISL1557AIUEZ

FAQ

What is the maximum continuous output current?

The maximum continuous output current is 75mA.

How does the device handle power supply variations?

It supports a single supply of 4.5V to 12V or a dual supply of ±2.25V to ±6V.

What is the purpose of the C0 and C1 pins?

These pins control the bias and enable/disable functions of the outputs to optimize the performance-to-power ratio.