At present works are carrying out making multichannel photodetective assemblies,
operating in 3-5 micron specral range made on the of high-sensitive cooled
hybrid photomodules (PMs) including multi-element photosensitive element (PSE),
multiplexers and a cooler (e.g.) termoelectric coolers (TECs).
Application of such PMs allows to make better weight and size parameters of
optoelectronic equipment, to decrease power consumption, to decrease cost and
works hous of making photodetective assemblies (PDAs).
Signals communitation in PMs is realizes with the help of multiplexers-large
integrated circuits without packages winh input preamplifiers.
For achievement of maximum detectivity of such photomodules parameters of
PSEs and multiplexers must be mutually agreed.
Subjects of developing and studing multiplexers for their optimal mating with
PbSe photoresistor were discussed in paper, requirements for photoresistor
parameters and characteristics of the multiplexer providing realization of
photomodule detecivity were determined.