Sample hold circuit and semiconductor device having the same

Details Sample hold circuit and semiconductor device having the same Sample hold circuit and semiconductor device having the same

1997-12-19

2000-11-07

Nuton, My-Trang

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 92, G11C 2702

Patent

active

061442348

ABSTRACT:
To form a high-speed, high-precision sample hold circuit with the minimum number of elements and low current consumption, there is provided a sample hold circuit including an operational amplifier including differential input stage in which sources or emitters are commonly connected, a cascode current mirror circuit for receiving a differential output from the different input stage, and a push-pull output stage having a diamond circuit connected to the cascode current mirror circuit, wherein a hold capacitor is connected to the output of the operational amplifier, and the push-pull output stage is switched between a buffer operation mode and a high-impedance output operation mode in accordance with a logic signal.

REFERENCES:
patent: 5130572 (1992-07-01), Stitt et al.
patent: 5289278 (1994-02-01), Bird
patent: 5378938 (1995-01-01), Birdsall et al.
patent: 5473273 (1995-12-01), Werner, Jr. et al.
patent: 5539339 (1996-07-01), Van Rens
patent: 5844433 (1998-12-01), Nishimura

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