SY88983VMG

Overview

The SY88983VMG is a low-power limiting post amplifier designed for fiber optic receivers, supporting multi-rate operation up to 3.2Gbps. It features a 38dB differential gain and a 2.2GHz 3dB bandwidth. The device operates on a single 3.3V or 5V supply within an industrial temperature range of -40°C to +85°C. It provides 50Ω CML data outputs with an 800mVpp swing and includes a programmable Signal Detect (SD) output with TTL compatibility.

Feature Summary

• Integrates a high-gain limiting amplifier with a wide bandwidth to amplify small input signals into voltage-limited waveforms.
• Includes a chatter-free open-collector Signal Detect output with internal pull-up resistor and programmable sensitivity via a single external resistor.
• Features internally terminated differential inputs and dedicated enable functionality to maintain output stability during loss-of-signal conditions.

Applications

• Fiber optic receivers
• GBIC transceivers
• SFP transceivers

Procurement Notes

Verify the specific package variant required, as the SY88983V series is available in both 10-pin MSOP and 16-pin MLF packages. Confirm that the selected component matches the exact pinout and thermal requirements of the target design. Note that this product family may be subject to discontinuation notices; review official documentation for current lifecycle status before finalizing procurement plans.

Selection Notes

Select the SY88983VMG when a low-power solution is needed for amplifying signals from transimpedance amplifiers in optical networks. Ensure the design accommodates the single power supply requirement and utilizes the programmable SD threshold to match the expected input signal amplitude variations. Verify that the chosen package aligns with the PCB layout constraints and thermal dissipation capabilities of the application environment.

Part Context

This component belongs to the SY88983V series of limiting post amplifiers manufactured by Microchip Technology. It is engineered to interface directly with typical transimpedance amplifiers, quantizing noisy linear signals into clean CML waveforms suitable for downstream clock and data recovery circuits in high-speed serial communication systems.

Replacement Considerations

SY88983VKI

FAQ

How is the Signal Detect sensitivity configured?

The sensitivity is set using a single external resistor connected between the SDLVL pin and VCC, which creates a voltage divider to define the detection threshold.

What is the purpose of the EN input?

The Enable input allows feedback from the Signal Detect output to de-assert the true data output, maintaining stability during loss-of-signal conditions without removing the input signal.