Low frequency noise canceling photodetector preamplifier useful

Details Low frequency noise canceling photodetector preamplifier useful Low frequency noise canceling photodetector preamplifier useful

1990-09-17

1992-01-28

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307494, 307311, 307350, 307572, 330 9, 25037009, G06G 712, H03K 342, H03K 5153, H03K 17687

Patent

active

050846396

ABSTRACT:
A preamplifier interfaces low level current-mode signals, such as from a photodetector in a computerized tomography system, to a corresponding voltage-mode signals, with a dynamic range on the order of 120 dB. The preamplifier can be implemented in CMOS technology to allow for complete integration of the computerized tomography interface function, including analog-to-digital conversion, of several channels in a single integrated circuit. The CMOS circuit accepts a current signal at its input and, after integration of the signal, produces a voltage output wherein the low frequency noise that is normally encountered with MOS transistors is cancelled through the use of correlated-double sampling. The circuit limits high frequency noise through use of low-pass filtering.

REFERENCES:
patent: 4258719 (1981-03-01), Lewyn
patent: 4260951 (1981-04-01), Lewyn
patent: 4665327 (1987-05-01), Bacrania et al.
patent: 4769753 (1988-09-01), Knudson et al.
R. D. Yen et al., "A MOS Switched-Capacitor Instrumentation Amplifier", IEEE J. Solid-State Circuits; vol. SC-17, Dec. 1982, pp. 1008-1013.
D. J. Allstot, "A Precision Variable-Supply CMOS Comparator", IEEE J. Solid-State Circuits; vol. SC-17, Dec. 1982; pp. 1080-1087.
B. S. Song et al., "A Precision Curvature-Compensated CMOS Bandgap Reference"; IEEE J. Solid-State Circuits, vol. SC-18, Dec. 1983, pp. 634-643.
B. S. Song et al., "A 12-bit 1-Msample/s Capacitor Error Averaging Pipelined A/D Converter", J. IEEE Solid-State Circuits, vol. 23; No. 6, Dec. 1988, pp. 1324-1333.
A. S. Sedra et al., "Microelectronic Circuits", Holt, Rinehart and Winston, New York, N.Y.; 1982, pp. 41-43.

Affiliated with

Also associated with

Rating

Low frequency noise canceling photodetector preamplifier useful does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low frequency noise canceling photodetector preamplifier useful , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low frequency noise canceling photodetector preamplifier useful will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1862791