SY88803VKG

Overview

The SY88803VKG is a low-power limiting post amplifier manufactured by Microchip Technology, housed in a 10-pin MSOP package. It operates from a single +3.3V or +5V power supply and supports data rates up to 155Mbps. The device features differential PECL outputs with a typical voltage gain of 38dB and a 3dB bandwidth of 200MHz. It includes a TTL Loss-of-Signal (LOS) output with programmable sensitivity via the LOSLVL pin and an /EN input for signal control.

Feature Summary

• Provides high-gain amplification for small input signals down to 5mVp-p
• Generates a chatter-free TTL Loss-of-Signal output
• Features programmable LOS sensitivity using a dedicated level set pin
• Includes an enable input to deassert the true data output

Applications

• 155Mbps SONET/SDH systems
• Small form factor transceivers
• High-gain line driver and line receiver circuits

Procurement Notes

Verify that the specific ordering suffix matches the required industrial temperature range (-40°C to +85°C). Confirm the lead finish is Pb-free NiPdAu as indicated by the KG suffix. Ensure the package type corresponds to the 10-pin MSOP format. Cross-reference the manufacturer part number against official distributor catalogs to confirm current availability status.

Selection Notes

Select this component when interfacing with transimpedance amplifiers in fiber-optic receivers requiring PECL outputs. It is suitable for applications needing a single power supply operation at 3.3V or 5V. Consider the 38dB differential gain and 200MHz bandwidth for signal integrity requirements. Evaluate the programmable LOS threshold capabilities for noise immunity needs.

Part Context

This device belongs to the SY88803 series of limiting post amplifiers designed for optical communication applications. It functions as a post-amplifier stage following a transimpedance amplifier to condition noisy linear signals into clean digital waveforms. The series is characterized by low power consumption and compact packaging options for dense circuit board layouts.

Replacement Considerations

SY88803VKC: Commercial temperature variant with Sn-Pb finish.

FAQ

How is the Loss-of-Signal sensitivity configured?

Sensitivity is set by applying a voltage between VCC and VREF to the LOSLVL pin.

What is the minimum detectable input signal amplitude?

The device can amplify signals as small as 5mVp-p.