SY88993VKG

Overview

The SY88993VKG is a high-speed limiting post amplifier manufactured by Microchip Technology, designed for fiber-optic receiver applications with data rates up to 3.2Gbps. It operates on a single 3.3V or 5V power supply and accepts differential PECL inputs. The device amplifies signals as small as 4mVpp to drive CML input devices. It features a programmable level detect function that generates a chatter-free Loss of Signal (LOS) open collector TTL output. The sensitivity of the level detect can be adjusted using the LOSLVL pin.

Feature Summary

• Amplifies low-amplitude signals to drive CML input devices
• Generates a stable, chatter-free Loss of Signal indicator
• Incorporates a programmable level detect function for signal loss identification
• Supports operation with either a 3.3V or 5V single power supply

Applications

• 1.25Gbps Gigabit Ethernet
• 531Mbps and 1062Mbps Fibre Channel
• 622Mbps SONET
• Gigabit interface converter
• 2.5Gbps SDH/SONET

Procurement Notes

Verify the component manufacturer origin, as the datasheet indicates Micrel, Inc., which was acquired by Microchip Technology. Confirm the package type matches the required MSOP-10 footprint. Ensure the lead finish specification aligns with assembly requirements, noting the Pb-Free NiPdAu option associated with the KG suffix. Validate RoHS compliance status through official documentation before integration.

Selection Notes

Select this component when a limiting amplifier is needed for fiber-optic links operating at speeds up to 3.2Gbps. It is suitable for interfacing transimpedance amplifiers with CML-compatible downstream circuitry. Consider the adjustable LOS sensitivity if precise signal loss detection thresholds are required. Verify that the board layout supports high-frequency performance by minimizing inductive ground runs.

Part Context

This part belongs to the SY88993 series of high-speed limiting post amplifiers. It is specifically engineered for optical communication systems requiring robust signal regeneration. The device integrates both the limiting amplifier and a buffer stage within a compact 10-pin MSOP package, facilitating space-constrained designs in telecommunications and datacom equipment.

Replacement Considerations

SY88993VKC

FAQ

How is the Loss of Signal (LOS) sensitivity adjusted?

The LOS sensitivity is adjusted via the LOSLVL pin by connecting a resistor divider between VCC and VREF.

What is the minimum input signal amplitude the device can amplify?

The SY88993V can amplify signals as small as 4mVpp to drive devices with CML inputs.