Transimpedance amplifier

Details Transimpedance amplifier Transimpedance amplifier

1991-12-20

1993-06-01

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including atomic particle or radiant energy impinging on a...

330300, H03F 308

Patent

active

052163865

ABSTRACT:
An improved transimpedance amplifier having a wide bandwidth, stable operation and high gain including a cascode input transistor stage. The cascode input stage includes a JFET transistor coupled to a photodiode output providing the current input for the transimpedance amplifier. The output of the JFET transistor is coupled to the emitter of a bipolar transistor having its base grounded. The JFET reduces current noise in the transimpedance amplifier and the bipolar transistor provides the required high gain while coupling the Miller capacitance to ground. The output of the bipolar transistor is coupled through the base of a second bipolar transistor which provides a buffer for the transimpedance amplifier. An output level shift provides the feedback voltage to the cascode input stage.

REFERENCES:
patent: 4620321 (1986-10-01), Chown
patent: 4882482 (1989-11-01), Smith et al.

Affiliated with

Also associated with

Rating

Transimpedance amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transimpedance amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transimpedance amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1817710