DAC-BASED VOLTAGE REGULATOR FOR FLASH MEMORY ARRAY

Title:

DAC-BASED VOLTAGE REGULATOR FOR FLASH MEMORY ARRAY

Document Type and Number:

WIPO Patent Application WO2004025389

Kind Code:

A3

Abstract:

A DAC-based voltage regulator system for a non-volatile memory device comprises a charge pump circuit having an enable input and a voltage output node. A voltage-to current converter has an input coupled to the voltage output node and an output coupled to a virtual ground node. A current source is coupled to the virtual ground node and sinks one of a plurality of currents in response to states of a plurality of digital input signals. A transconductance amplifier has an inverting input at the virtual ground node, a non-inverting input coupled to a reference voltage potential, and an output. A comparator has a first input coupled to the output of the transconductance amplifier, a second input coupled to a reference voltage potential, and an output coupled to the enable input of said charge pump.

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Inventors:

FRULIO MASSIMILIANO
SIVERO STEFANO
BARTOLI SIMONE
MOGNONI SABINA

Application Number:

PCT/US2003/028479

Publication Date:

November 25, 2004

Filing Date:

September 09, 2003

Export Citation:

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Assignee:

ATMEL CORP (US)

International Classes:

G11C16/06; G11C5/14; G11C16/30; G11C16/34; H02M3/07; H03M1/66; G05F; (IPC1-7): H03M1/66

Foreign References:

US5563499A	1996-10-08
US5453953A	1995-09-26
US6441593B1	2002-08-27
US20020145892A1	2002-10-10

Other References: