EE Product News

GaAs Photodetectors Respond Quickly

Extremely fast response times, low dark currents, and cutoff frequencies as high as 10 GHz are featured in the G4176 and G7096 Series of GaAs, metal-semiconductor-metal photodetectors. The devices have applications in computer data links, optical communication, and fast optical waveform measurement.Both types have a photosensitive area that's larger than typical photodetectors, which facilitates coupling with an optical system. There are various package styles, including a coaxial metal package with a link to an SMA connector, a TO-18 package, and a small ceramic package. Typical rise/fall times for G4176 are 20 ps with dark current of 20 pA. G7096 has a 40-ps rise time and 60-ps fall time with a 10-µA dark current.


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