SY88933VKG-TR

Overview

The SY88933VKG-TR is a low-power limiting post amplifier manufactured by Microchip Technology. It operates from a single +3.3V or +5V power supply and supports data rates up to 1.25Gbps. The device features PECL data outputs, an open-collector TTL signal-detect output with internal pull-up, and a programmable signal-detect level set pin. It is housed in a 10-pin MSOP package.

Feature Summary

• Provides high-sensitivity amplification for signals as small as 5mVp-p
• Generates a chatter-free TTL signal-detect output with programmable threshold
• Features a TTL enable input for output control without removing the input signal

Applications

• 1.25Gbps Ethernet
• 1.55Mbps and 622Mbps SONET/SDH
• High-gain line driver and line receiver
• 531Mbps and 1062Mbps Fibre Channel
• Gigabit interface converter

Procurement Notes

Verify that the ordering suffix KG indicates the industrial temperature range (-40°C to +85°C) and Pb-Free NiPdAu lead finish. Confirm the TR suffix corresponds to the tape and reel packaging format required for automated assembly processes. Ensure compatibility with the specified operating voltage ranges of +3.0V to +3.6V or +4.5V to +5.5V.

Selection Notes

Select this component when interfacing with transimpedance amplifiers in fiber-optic receivers requiring quantization of noisy linear signals. The device is suitable for applications needing DC to 1.25Gbps operation with low noise PECL outputs. Consider the programmable SD level set feature if precise amplitude detection thresholds are necessary for system stability.

Part Context

This part belongs to the SY88933 family of low-power limiting post amplifiers designed for fiber-optic applications. It connects directly to typical transimpedance amplifiers to amplify and quantize signals. The series includes variants with different temperature ranges and packaging options, such as commercial and industrial grades.

Replacement Considerations

SY88933VKC-TR (Commercial grade)

FAQ

How is the signal-detect threshold configured?

The threshold is set using the SDLVL pin. Connecting an external resistor between VCC and SDLVL creates a voltage divider with the internal VREF, allowing the user to program the sensitivity of the input amplitude detection.

What is the function of the EN pin?

The EN pin is a TTL input that asserts the true data output when held high. It allows the output signal to be deasserted without removing the input signal, which helps maintain stability under loss-of-signal conditions.