MAX3724

3.2Gbps SFP Transimpedance Amplifiers with RSSI


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Description

The MAX3724/MAX3725 transimpedance amplifiers provide a compact, low-power solution for communication up to 3.2Gbps. They feature 325nA input-referred noise at 2.1GHz bandwidth (BW) with 0.6pF input capacitance. The parts also have > 2mAP-P AC input overload.

Both parts operate from a single +3.3V supply and consume 93mW. The MAX3724/MAX3725 are in a compact 30-mil x 50-mil die and require no external compensation capacitor. A space-saving filter connection is provided for positive bias to the photodiode through an on-chip 580Ω resistor to VCC. These features allow easy assembly into a low-cost TO-46 or TO-56 header with a photodiode.

The MAX3724 and MAX3748A receiver chip set provides an RSSI output using a Maxim interface technique. The MAX3724 preamplifier, MAX3748A postamplifier, and the DS1858/DS1859 SFP controller meet all the SFF-8472 digital diagnostic requirements.
MAX3724, MAX3725: Typical Application Circuit MAX3724, MAX3725: Typical Application Circuit Enlarge+

Key Features

  • Wider Bandwidth than MAX3744/MAX3745
  • RSSI Implementation in 4-Pin TO-46 Header (MAX3724 and MAX3748A)
  • 8psP-P Deterministic Jitter for < 100µAP-P Input Current
  • 325nARMS Input-Referred Noise at 2.1GHz Bandwidth
  • 28mA Supply Current at +3.3V
  • 2.5GHz Small-Signal Bandwidth
  • 2.0mAP-P AC Overload
  • Die Size: 30 mils x 50 mils (Identical to the MAX3744/MAX3745)

Applications/Uses

  • Optimized for Small-Form-Factor Pluggable (SFP) Optical Receivers
  • Up to 3.2Gbps SFF/SFP Optical Receivers

Quality and Environmental Data

Product Reliability Reports: MAX3724.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
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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Related Resources


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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