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iT5061 12.5-Gb/s 8-Vpp Modulator Driver
(for use with bias choke)
Description
The iT5061 is a low-cost, high-out-voltage, plastic-packaged (QFP-N) broadband GaAs traveling-wave MMIC amplifier. In optical communication systems, it is well suited as a driver for EO/LiNo3 modulators by providing from 6 to 8 Vpp output for NRZ signals up to 12.5 Gb/s. The amplifier can also be used as an optical receiver amplifier gain stage for photodiodes or as a limiting amplifier after the transimpedance amplifier. It can operate from DC up to 11GHz with 14 dB linear gain, +21 dBm P1dB compression point, and +23 dBm Psat. The iT5061 employs GaAs pHEMT technology with silicon nitride as the dielectric of the on-chip MIM capacitors.