SY88903ALKG

Special Purpose Amplifiers Overview

The SY88903ALKG is a 3.3V, burst mode, high-sensitivity limiting post amplifier operating at data rates up to 1.25Gbps. It features differential PECL inputs and generates a chatter-free Loss of Signal (LOS) open collector TTL output. Designed for fiber-optic receivers, it amplifies signals as small as 5mVp-p to drive devices with PECL inputs. The device includes a TTL /EN input and operates on a single power supply.

Special Purpose Amplifiers Feature Summary

• Provides high gain and wide bandwidth suitable for fiber-optic receiver applications
• Generates a chatter-free Loss of Signal (LOS) using an open collector TTL output
• Features differential PECL inputs for data transmission
• Includes a TTL enable (/EN) input for control

Special Purpose Amplifiers Applications

• 1.25Gbps Gigabit Ethernet
• 531Mbps and 1062Mbps Fibre Channel
• 622Mbps SONET
• Gigabit Interface Converter

Special Purpose Amplifiers Procurement Notes

Verify the specific suffix 'ALKG' against the manufacturer's current datasheet to confirm package type and availability status. Ensure compatibility with existing system voltage requirements of 3.3V. Check for any recent product change notifications or lifecycle status updates from Microchip Technology before finalizing procurement plans.

Special Purpose Amplifiers Selection Notes

Select this component when designing fiber-optic receivers requiring high sensitivity and burst mode operation at 1.25Gbps. It is ideal for interfacing with transimpedance amplifiers where signal quantization and noise rejection are critical. Consider the MSOP-10 package constraints and single-supply operation requirements during PCB layout.

Special Purpose Amplifiers Part Context

This part belongs to the SY88903 series of limiting post amplifiers manufactured by Microchip Technology (formerly Micrel). It is specifically optimized for passive optical networks and fiber-optic applications. The device connects to typical transimpedance amplifiers to process linear signals containing significant noise.

Special Purpose Amplifiers Replacement Considerations

The SY88903AL and SY88903ALKGTR are functionally similar variants within the same family. Verify pinout and electrical specifications against the official datasheet before substitution.