SY88933VKI-TR

Overview

The SY88933VKI-TR is a low-power limiting post amplifier designed for fiber-optic receivers. It operates from a single +3.3V or +5V power supply and supports data rates up to 1.25Gbps. The device features a high-sensitivity input capable of amplifying signals as small as 5mVp-p, providing typically 38dB differential voltage gain. It outputs PECL level waveforms and includes a TTL signal detect output with programmable sensitivity.

Feature Summary

• Provides high-gain amplification for low-amplitude linear signals from transimpedance amplifiers
• Outputs quantized PECL level waveforms suitable for downstream logic interfaces
• Generates a chatter-free open-collector TTL signal detect output
• Features programmable signal detection threshold via an external resistor

Applications

• 1.25Gbps Ethernet systems
• 155Mbps and 622Mbps SONET/SDH networks
• 531Mbps and 1062Mbps Fibre Channel applications
• Gigabit interface converters

Procurement Notes

Verify the 'I' suffix indicates industrial temperature range operation (-40°C to +85°C). Confirm the 'TR' suffix denotes tape and reel packaging. Ensure the component matches the specific Micrel/Microchip datasheet revision D for accurate electrical characteristics and pinout definitions.

Selection Notes

Select this component when interfacing with transimpedance amplifiers requiring high sensitivity for small input signals. It is suitable for designs needing a single power supply and integrated signal detection. Consider the MSOP package size for space-constrained layouts and verify termination requirements for the PECL outputs.

Part Context

This part belongs to the SY88933V family of limiting post amplifiers. It is manufactured by Microchip Technology (formerly Micrel). The device is specifically engineered to clean and amplify noisy linear signals into digital-compatible PECL levels for optical receiver applications.

Replacement Considerations

SY88933VKC-TR: Commercial temperature variant. SY88933VKG-TR: Lead-free RoHS-compliant version in tape and reel.