MAX1485CUB+ (MAX3643ETG+T) Laser Diode Driver

Product OverviewThe MAX3643ETG+T is a 155Mbps to 2.5Gbps burst mode laser driver in 24 pin TQFNpackage. This burst mode laser driver provides bias and modulation current drivefor PON burst-mode ONT applications. It is specifically designed for use with alow cost external controller for APC (and if desired, AMC) loop. A high speeddifferential burst-enable input enables driver to switch laser from a dark(output off) condition to full on-condition in less than 2ns. When BEN isinactive, typical modulation and bias currents are 5µA each. Laser modulationcurrent can be set from 10mA to 85mA and bias current can be set from 1mA to70mA using MODSET and BIASSET inputs. A sample and hold circuit is provided tocapture monitor diode output during short PON bursts, if needed and BEN highspeed signal is mirrored on an LVCMOS output to be used by controller operatingthe APC/AMC loop. It is used in A/B/G/XGPON ONT modules up to 2.5Gbps and1.25Gbps IEEE EPON ONT modules.Supply voltage range is 3V to 3.6VOperating temperature range from -40°C to +85°COutput transition time is 45psTurn-on/-off time is 2nsReference voltage generatorLVPECL high-speed inputs (data, burst enable)Maximum data rate of 2500MbpsProduct InformationLaser Driver Type: Laser DiodeDriver Case Style: TQFNNo. of Pins: 24PinsSupply Voltage Min: 3VSupply Voltage Max: 3.6VProduct Range: -MSL: MSL 1 - Unlimited