Charge transfer amplifier circuit, voltage comparator, and sense

Details Charge transfer amplifier circuit, voltage comparator, and sense Charge transfer amplifier circuit, voltage comparator, and sense

1998-06-05

2000-11-21

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 77, 327337, G11C 2702

Patent

active

061508519

ABSTRACT:
Charge transfer amplifier circuit which is capable of canceling fluctuations in the element characteristics thereof and which conducts highly accurate voltage amplification without the use of a stationary current, and provides a voltage comparator which may be applied to a highly accurate A/D converter which has low power consumption. The charge transfer amplifier circuit is provided with a MOS transistor, a first capacity and a second capacity which are effectively connected to, respectively, the source electrode and the drain electrode of the MOS transistor, a mechanism for setting the region between the terminals of the first capacity and the region between the terminals of the second capacity, respectively, to appropriate predetermined potential differences, and for releasing these, and a mechanism for appropriately externally altering the potential difference between the gate and the source of the MOS transistor. The first capacity is set so as to be larger than the second capacity. Furthermore, in the voltage comparator, a dynamic latch circuit is connected to the drain electrode of the charge transfer amplifier circuit.

REFERENCES:
patent: 3852619 (1974-12-01), Carbrey
patent: 5410195 (1995-04-01), Ichihara
patent: 5659497 (1997-08-01), Ueno et al.

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