Multiple channel readout circuit optimized for a cryogenically o

Details Multiple channel readout circuit optimized for a cryogenically o Multiple channel readout circuit optimized for a cryogenically o

1988-05-31

1989-08-29

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250332, G01J 526, H01L 274

Patent

active

048620025

ABSTRACT:
The invention relates to a multiple channel readout circuit optimized for a cryogenically operated IR sensor head. The circuit is applicable to the individual channel preamplifiers of a charge injection device (CID) IR sensor. Since the thermal leakage must be minimized, the voltages on the principal current supply path to the individual preamplifiers will vary when a strong signal is present on any channel. Crosstalk is avoided by using a four transistor cascode preamplifier circuit having a source follower output, in which the gate of the transistor, which acts as a load to the two cascoded transistors, is isolated from the drain of the load transistor, connected to a gate load node common to the other channels, and the node connected via a single connection of high thermal impedance to a terminal external to the cryogenic environment, at which filtering may be provided as needed.

REFERENCES:
patent: 4659928 (1987-04-01), Tew
patent: 4779004 (1988-10-01), Tew et al.

Affiliated with

Also associated with

Rating

Multiple channel readout circuit optimized for a cryogenically o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple channel readout circuit optimized for a cryogenically o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple channel readout circuit optimized for a cryogenically o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2240316