High voltage digital driver with dynamically biased cascode...

Details High voltage digital driver with dynamically biased cascode... High voltage digital driver with dynamically biased cascode...

2008-09-30

2008-09-30

Lateef, Marvin M. (Department: 4146)

Electronic digital logic circuitry

Interface

Supply voltage level shifting

C326S086000

Reexamination Certificate

active

11333915

ABSTRACT:
A high voltage digital output driver with dynamically biased cascode transistors is disclosed. The cascode transistors are dynamically self-biased via capacitors from the output voltage. The dynamic self-biasing doesn't require any switching means. The output-voltage can be increased by adding additional self-biased cascode transistors. The static current consumption in low-state for each individual driver on a same chip is minimal because only one resistor string consuming static current is required for all similar output drivers.

REFERENCES:
patent: 6429686 (2002-08-01), Nguyen
patent: 6580291 (2003-06-01), Lutley
patent: 2003/0189443 (2003-10-01), Kunz et al.
“A High-Voltage Output Driver in a Standard 2.5V 0.25 μm cmos Technology”, by Bert Serneels et al., Isscc 2004/Session 7/ TD : Sealing Trends/7.8, Solid-State Circuits Conf. 2004, Digest of Technical Papers, pp. 146-155,XP010722195.
“A 5.5 SOPA Line Driver in a Standard 1.2 V 0.13 μm cmos Technology,” by Bert Serneels et al., Proceedings of ESSCIRC, Grenoble , France, 2005, XP-010854962,IEEE 2005, pp. 303-306.
“A High-Voltage Output Driver in a 2.5-V 0.25-μm CMOS Technology”, by Bert Serneels et al., IEEE Jrnl. of Solid-State Circuits, vol. 40, No. 3, Mar. 2005, pp. 576-583.

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