EL6939CLZ

Overview

The EL6939CLZ is a single-channel laser diode driver manufactured by Intersil, housed in a 32-VFQFN exposed pad package with dimensions of 5x6 mm. Designed for optical drive applications, it integrates a waveform generator to program diode currents and timing details prior to operation. The device features an IV amplifier with concurrent read and write sampling capabilities and supports dual-laser outputs for multi-standard optical heads. It accepts standard CMOS or LVDS clock and NRZ inputs, configurable via a serial interface port.

Feature Summary

• Integrates a programmable waveform generator for precise control of diode currents and timing parameters.
• Includes an IV amplifier with concurrent read and write sampling functionality.
• Supports dual-laser outputs to accommodate multi-standard optical head configurations.

Applications

• Multi-standard writable optical drives
• DVD and CD recording systems
• Dual-laser optical head implementations

Procurement Notes

Verify component authenticity as the EL6939CLZ is listed as obsolete by the manufacturer. Confirm RoHS compliance status, which is noted as non-compliant in available records. Ensure compatibility with existing PCB footprints for the 32-QFN package before procurement. Check for alternative sources such as Rochester Electronics LLC for availability.

Selection Notes

Select this component when designing systems requiring integrated waveform generation for laser diodes without external potentiometers. It is suitable for applications needing programmable timer resolution and support for multiple optical media standards like CD-R, DVD-R, and DVD+RW. Consider the dual-supply requirement of 5V for analog and 3.3V for digital circuits during design.

Part Context

The EL6939 belongs to Intersil's family of laser diode drivers designed for optical storage solutions. It replaces discrete solution designs by integrating control logic, waveform generation, and amplification into a single chip. This integration reduces bill of materials and simplifies layout for high-density optical drive modules.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the part is marked obsolete, engineering change orders should be initiated to identify qualified alternatives from current Renesas product lines that offer similar waveform generation and dual-laser support capabilities.