SY88943VKC-TR

Overview

The SY88943VKC-TR is a limiting post amplifier manufactured by Microchip Technology, designed for fiber-optic receiver applications with data rates up to 2.5Gbps. It operates from a single power supply of 3.3V or 5V and features differential PECL inputs and outputs. The device includes a programmable level detect function that generates a chatter-free Signal Detect (SD) open collector TTL output. This SD output transitions when the input signal falls below a threshold set by the SDLVL pin, allowing feedback to the EN input for stability during loss of signal conditions.

Feature Summary

• Provides high gain and wide bandwidth amplification for signals as small as 5mVp-p to drive PECL input devices.
• Generates a chatter-free Signal Detect (SD) open collector TTL output based on a programmable input level threshold.
• Incorporates an Enable (EN) input to disable the output signal without removing the input signal.

Applications

• 1.25Gbps and 2.5Gbps Ethernet
• Fibre Channel links at 531Mbps, 1062Mbps, and 2.12Gbps
• 622Mbps SONET systems
• Gigabit interface converters

Procurement Notes

Verify the specific ordering suffix 'C' against official documentation to confirm lead-free status and packaging details. Confirm the package type is MSOP-10 and check humidity sensitivity requirements before storage and assembly. Ensure the component meets the required commercial operating temperature range.

Selection Notes

Select this component for high-frequency fiber-optic applications requiring a limiting amplifier with integrated signal detection. Consider the single power supply requirement and the need for external termination resistors for the PECL outputs. Evaluate the programmable SD threshold capability for system stability requirements.

Part Context

The SY88943V series consists of limiting post amplifiers intended for use in fiber-optic links. These devices connect to transimpedance amplifiers to quantize noisy linear signals into voltage-limited waveforms. The series supports various data rates up to 2.5Gbps and is designed to work with Micrel-Synergy laser diode drivers and controllers.

Replacement Considerations

SY88943VKG-TR

FAQ

How is the Signal Detect (SD) threshold adjusted?

The SD threshold is adjusted using the SDLVL pin by connecting a resistor divider between VCC and VREF.

What is the function of the EN pin?

The EN pin allows the user to disable the output signal without removing the input signal.