SY88307BLMG

Special Purpose Amplifiers Overview

The SY88307BLMG-TR is a low-power limiting post amplifier designed for fiber-optic receivers, operating from a single +3.3V supply across an industrial temperature range of –40°C to +85°C. It supports data rates up to 3.2Gbps and amplifies input signals as small as 10mVPP to drive PECL/CML inputs. The device features a wide bandwidth of 1.8GHz and a differential voltage gain of 42dB. It includes a programmable loss-of-signal (LOS) detection circuit with open-collector TTL output and hysteresis to prevent chatter.

Special Purpose Amplifiers Feature Summary

• Generates PECL-level waveforms from noisy TIA outputs
• Features programmable LOS level set for wide input range detection
• Provides chatter-free open-collector TTL LOS output
• Includes enable bar input for output stability control

Special Purpose Amplifiers Applications

• PON systems
• Gigabit Ethernet interfaces
• Fibre Channel (1X and 2X)
• SONET/SDH (OC 3/12/24/48 – STM 1/4/8/16)

Special Purpose Amplifiers Procurement Notes

Verify the specific package variant required, as the SY88307BL series is available in both 10-pin EPAD-MSOP and 16-pin QFN configurations. Confirm that the ordering suffix matches the desired reel or tube packaging format. Ensure compatibility with the intended PCB footprint and thermal management requirements for the selected package type before finalizing procurement.

Special Purpose Amplifiers Selection Notes

Select this component when interfacing with transimpedance amplifiers requiring signal quantization for high-speed optical links. The device is suitable for applications needing a wide dynamic input range and precise loss-of-signal detection. Consider the 16-pin QFN package for compact designs requiring exposed pad grounding for thermal dissipation.

Special Purpose Amplifiers Part Context

This part belongs to the SY8830x family of limiting post amplifiers manufactured by Micrel (now Microchip Technology). These devices are engineered to clean and amplify signals from optical receivers. The SY88307BL specifically targets PECL output requirements, distinguishing it from CML variants within the same product line.

Special Purpose Amplifiers Replacement Considerations

SY88307BLEY

Special Purpose Amplifiers FAQ

How is the Loss-of-Signal threshold configured?

The LOS threshold is set using an external resistor connected between the VCC supply and the LOSLVL pin, creating a voltage divider.

What is the purpose of the EN/ input?

The EN/ input de-asserts the true data output without removing the input signal, allowing feedback from the LOS output to maintain stability during signal loss.