Bucket brigade analog delay line with voltage limiting feedback

Details Bucket brigade analog delay line with voltage limiting feedback Bucket brigade analog delay line with voltage limiting feedback

1993-01-12

1994-03-01

Sikes, William L.

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

377 57, 377 59, 377 62, 377 63, H03K 513, G11C 1928

Patent

active

052910830

ABSTRACT:
A bucket brigade analog delay line with voltage limiting feedback includes an input stage for receiving an input signal and a series of delay stages coupled to the input stage for propagating the input signal through the line. Each delay stage contains a storage capacitor for holding either a signal charge or a reference charge, a transfer device for transferring charge from one stage to another at regular clock intervals, and a tap circuit for allowing external sampling of the propagated input signal. Each delay stage also includes a negative feedback amplifier for maintaining the drain terminal of the transfer device at a constant potential during charge transfer, thereby eliminating errors caused by finite output impedance of the transfer device. The negative feedback amplifier also prevents overvoltage conditions which could result in failure of the charge transfer devices.

REFERENCES:
patent: 3676711 (1972-07-01), Ahrons
patent: 3991322 (1976-11-01), Bush et al.
patent: 4139784 (1979-02-01), Saver
patent: 4218665 (1980-08-01), Fujisaki
patent: 4962512 (1990-10-01), Kiuchi
patent: 5029189 (1991-07-01), Sato et al.
F. L. J. Sangster, "The '1 bucket-brigade delay line`, a shift register for analogue signals", Philips Technical Review, vol. 31, 1970, No. 4, pp. 97-110.
F. L. J. Sangster, "Integrated bucket-brigade delay line using MOS tetrodes", Philips Technical Review, vol;. 31, p. 266.
C. N. Berglund et al., "Performance Limitations of the IGFET Bucket-Brigade Shift Register", IEEE Transactions on Electron Devices, vol. Ed-19, No. 7, Jul. 1972, pp. 852-860.

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