ONET1191VRGPT

Overview

The ONET1191VRGPT is a single-channel laser diode driver designed for fiber optic applications. It supports data rates up to 11.3 Gbps and operates on a single supply voltage ranging from 2.9V to 3.6V. The device integrates a limiting amplifier and requires external bias and modulation current settings, with typical operating currents of 20 mA for bias and 45 mA for modulation. It is housed in a compact 20-QFN (4x4 mm) package with an exposed pad for thermal management. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a limiting amplifier for high-speed signal processing
• Supports serial data transmission up to 11.3 Gbps
• Designed specifically for laser diode control in optical links

Applications

• Fiber optic communication systems
• Optical transceiver modules
• High-speed serial interconnects

Procurement Notes

Verify the specific suffix 'RGPT' to confirm the 20-QFN package and tape-and-reel packaging configuration. Confirm that the 11.3 Gbps speed grade matches the system requirements, as other variants may exist. Check for end-of-life status, as this component is marked as obsolete in distributor records. Ensure compatibility with the required 2.9V to 3.6V power supply rails during design validation.

Selection Notes

Select this component when a single-channel driver with integrated limiting amplification is required for 10G-class optical links. The 20-QFN package offers a small footprint suitable for dense PCB layouts. Consider the thermal performance of the exposed pad if operating at maximum modulation currents. Verify that the external components for bias and modulation current setting align with the target laser diode specifications.

Part Context

The ONET1191 belongs to Texas Instruments' portfolio of optical networking drivers. It is part of the ONET1191 family, which provides solutions for short-reach and intermediate-reach optical communications. This specific variant is optimized for cost-effective implementations requiring high data rates without complex external equalization circuits.

Replacement Considerations

Public documentation indicates this part number is obsolete. No direct public substitute part numbers are confirmed in the provided source material. Designers should consult official obsolescence notices or contact Texas Instruments directly for recommended replacement strategies.