Dual-ch optical modulator reduces complexity
The TGA4947-SL dual-channel SMT optical modulator is offered as the first of its kind to reduce BOM and shrink PCB areas dedicated to optical driver functions. It is designed for 40 Gbit/s and 100 Gbit/s light wave networks using DQPSK and DP-QPSK modulations, respectively.
The driver combines two driver amplifier channels and bias-tees in a compact surface-mount package that maintains high channel-to-channel isolation of 30 dB from dc to 40 GHz. The part dissipates just 1.2 W per channel at 6 Vpp output — which is half the power of competing products.
Additional features include a high output of 6 Vpp (adjustable up to 9 Vpp) and excellent signal to noise ratio with low additive RMS jitter of less than 0.7 ps. The TGA4947-SL offers broad bandwidth (dc to 32 GHz) performance, as well as rise and fall times of 10 ps, gain of more than 30 dB, and single-ended inputs/outputs.
It enables economical surface mount assembly processes and eliminates the need for costly connectorized driver “Bricks” while enabling SMT multiplexer modules. The TGA4947-SL is compatible with the company’s Smart Evaluation Board (Smart EVB) solution for simplified RF connectivity. It is designed to drive Mach-Zehnder modulators in optical transceivers and transponders serving metro and long-haul networks.(Contact company for pricing and availability)
By Christina Nickolas
TriQuint Semiconductor , Hillsboro , OR
Sales 503-615-9000
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