MAX3746

Low-Power, 622Mbps to 3.2Gbps Limiting Amplifier

Low-Power, Compact, Multirate Limiting Amplifier for SFF/SFP Applications Functions as a Data Quantizer for SONET, Fibre-Channel and Gigabit Ethernet Optical Receivers


Please check latest availability status for a specific part variant.

Description

The MAX3746 multirate limiting amplifier functions as a data quantizer for SONET, Fibre-Channel, and Gigabit Ethernet optical receivers. The amplifier accepts a wide range of input voltages and provides selectable-level, current-mode logic (CML) output voltages with controlled edge speeds. A received-signal-strength indicator (RSSI) is available when the MAX3746 is DC-coupled to the MAX3744/MAX3724 SFP transimpedance amplifier (TIA). A receiver consisting of the MAX3744/MAX3724 and the MAX3746 can provide up to 19dB RSSI dynamic range. Additional features include a programmable loss-of-signal (LOS) detect, an optional disable function (DISABLE), and an output-signal polarity reversal (OUTPOL). Output disable can be used to implement squelch.

The combination of the MAX3746 and the MAX3744/MAX3724 allows for the implementation of all the small-form-factor SFF-8472 digital diagnostic specifications using a standard 4-pin TO-46 header.

The MAX3746 is pin-for-pin compatible with the MAX3748A limiting amplifier and consumes 30% less power. The MAX3746 is packaged in a 3mm x 3mm, 16-pin QFN package.
MAX3746: Typical Operating Circuit MAX3746: Typical Operating Circuit Enlarge+

Key Features

  • SFP Reference Design Available
  • Low 115mW Power Consumption
  • 16-Pin QFN Package with 3mm x 3mm Footprint
  • 70ps Rise and Fall Time
  • Loss-of-Signal with Programmable Threshold
  • RSSI Interface (with MAX3744/MAX3724 TIA)
  • Output Disable
  • Polarity Select
  • 8.4psP-P Deterministic Jitter (3.2Gbps)
  • Improved EMI Performance
  • Selectable CML Output levels
  • Pin Compatible with MAX3748A

Applications/Uses

  • Fibre Channel SFF/SFP Transceiver Modules
  • Gigabit Ethernet SFF/SFP Transceiver Modules
  • Multirate OC-12 to OC-48 FEC SFF/SFP
  • Transceiver Modules
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Belle Isle 2020
05/29/2020 - 05/31/2020, Detroit, MI
2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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