Large time constant steering circuit and instrumentation...

Details Large time constant steering circuit and instrumentation... Large time constant steering circuit and instrumentation...

2011-04-05

2011-04-05

Nguyen, Patricia (Department: 2817)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

C330S103000, C330S252000

Reexamination Certificate

active

07920005

ABSTRACT:
The present invention relates to a large time constant steering circuit for slowly changing a voltage on a node between at least two discrete voltage levels. The present invention further relates to a slow steering current DAC comprising said large time constant steering circuit. The present invention further relates to an instrumentation amplifier device comprising a current balancing instrumentation amplifier for amplifying an input signal to an amplified output signal and a DC servo-loop for removing a DC-component from the input signal. The present invention further relates to an EEG acquisition ASIC comprising said instrumentation amplifier device.

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R. F. Yazicioglu, P. Merken, R. Puers, and C. Van Hoof, “60—μW 60nV/pHz readout front-end for portable biopotential acquisition systems,” IEEE J. Solid-State Circuits, vol. 42, No. 5, pp. 1100-1110, May 2007.
T. Denison, K. Consoer, W. Santa, T. Avestruz, J. Cooley, and A. Kelly, “a 2μW 100nV/√Hz Chopper-Stabilized Instrumentation Amplifier for Chronic Measurement of Neural Field Potentials,” IEEE J. Solid-State Circuits, vol. 42, No. 12, Dec. 2007.
R. R. Harrison and C. Cameron, “A Low-Power Low-Noise CMOS Amplifier for Neural Recording Applications,” IEEE J. Solid-State Circuits, vol. 38, No. 6, Jun. 2003.
R. H. Olsson, M. N. Gulari, and K. D. Wise, “A Fully-Integrated Bandpass Amplifier for Extracellular Neural Recording,” IEEE EMBS Conf. on Neural Eng., Italy, Mar. 2003.

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