ONET1151PRGTT

Overview

The ONET1151PRGTT is a laser driver manufactured by Texas Instruments, belonging to the ONET1151P series. It functions as an 11.3 Gbps limiting amplifier designed for direct modulation of lasers at data rates between 1 and 11.3 Gbps. The device operates on a single +3.3V power supply with a typical operating supply current of 52 mA. It is housed in a VQFN-16 package (4mm x 4mm) suitable for surface mount installation. The component supports an extended industrial temperature range from -40°C to +100°C.

Feature Summary

• Integrates a two-wire digital interface for control and diagnostics without requiring external microcontrollers
• Includes an automatic power control loop to compensate for laser average power variations due to voltage and temperature changes
• Provides programmable input equalization to support transmission lines up to 150 mm on FR4 printed circuit boards
• Features adjustable output impedance, de-emphasis, and cross-point control to improve optical eye diagram template margin

Applications

• 10 Gigabit Ethernet optical transmitters
• 8x and 10x Fibre Channel optical transmitters
• SONET OC-192 and SDH STM-64 optical transmitters
• SFP+ and XFP optical transceiver modules

Procurement Notes

Verify the specific suffix 'PRGTT' against the official datasheet to confirm it denotes the tape and reel packaging variant rather than a different functional specification. Confirm that the VQFN-16 package designation aligns with the physical footprint requirements of your design, as pinout compatibility with legacy devices like the ONET1101L should be validated through schematic review.

Selection Notes

Select this component when designing high-speed optical links requiring integrated laser bias and modulation control within a compact form factor. The inclusion of built-in ADC and DAC capabilities simplifies system architecture by removing the need for dedicated management controllers. Ensure the host system can accommodate the required +3.3V supply and supports the necessary serial communication protocol for configuring the internal registers.

Part Context

This part belongs to the ONET1151P family of low-power laser diode drivers. It is engineered for dense optical interconnect applications where space constraints and power efficiency are critical. The device maintains pin compatibility with the ONET1101L, facilitating easier upgrades or replacements in existing designs while offering enhanced performance at higher data rates up to 11.3 Gbps.

Replacement Considerations

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