Product Summary

The TGA4959-SL is a differential input and output optical modulator driver designed to operate at frequencies that target the 40 Gb/s optical market. The TGA4959-SL consists of a wideband amplifier assembled in a surface mount package combined with a minimum of external components. A single TGA4959-SL placed between the MUX and Optical Modulator provides OEMs with a differential modulator driver surface mount solution. The TGA4959-SL provides Metro and Long Haul designers with system critical features such as: low power dissipation, low rail ripple, high voltage drive capability (6 Vpp amplitude adjustable up to 9 Vpp) and very low output jitter. Several of the bias pins on the TGA4959-SL are internally set to simplify the user’s PCB design. Alternatively, these same pins can be adjusted by the user, if desired.

Parametrics

TGA4959-SL absolute maximum ratings: (1)Low additive RMS jitter: 580 fsec; (2)Low DC power dissipation: 2.2 W; (3)Gain: 24 dB at 16 GHz.

Features

TGA4959-SL features: (1)40 Gb/s performance; (2)Differential input and output; (3)Adjustable output amplitude: 6 Vpp to 9 Vpp; (4)Low additive RMS jitter: 580 fsec; (5)High output drive: 9 Vpp differential output with 1 Vpp differential input; (6)Gain: 24 dB at 16 GHz; (7)Low DC power dissipation: 2.2 W for Vout = 8 Vpp at Vd=5 V; (8)Rise and fall times: 13 psec; (9)Package size: 10 x 7 x 3.2 mm.

Diagrams

TGA4959-SL block diagram

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