Band gap circuit

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage

Reexamination Certificate

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Details

Other Related Categories

C323S313000

Type

Reexamination Certificate

Status

active

Patent number

07098729

Description

ABSTRACT:
A band gap circuit, including a differential amplifier. In response to fluctuation of the voltage on the band gap circuit output terminal VOUT, a potential difference occurs at an inverting input terminal and a noninverting input terminal of the differential amplifier. A transistor, connected to the output terminal VOUT, ground, an output terminal of the differential amplifier, causes excess current from the output terminal VOUT to flow to ground in response to fluctuation of the potential at the output terminal of the differential amplifier. A transistor that has a resistive component and a resistor that has a capacitive component are connected between a power supply voltage VDD and the output terminal VOUT.

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Hitoshi Tanaka, et al., “A Precise On-Chip Voltage Generator for a Gigascale DRAM with a Negative World-Line Scheme”,IEEE Journal of Solid-State Circuites, vol. 34 No. 8, Aug. 1999, pp. 1084-1089.
European Search Report dated Aug. 10, 2004.
Taiwan Office Action dated Apr. 8, 2005 (with English translation).

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