Complementary current source circuit

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

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327108, 327374, 326 17, H03K 17687

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active

056336110

ABSTRACT:
Driving circuits (6) output driving signals to drive switching transistors (Q 15, Q16). A potential as the high level of the driving signal can be set lower than a power supply voltage (V.sub.DD) by connecting the sources of transistors (Q18, Q20) to a node (X). This configuration prevents an overshoot at a switching time and allows an improvement in a settling time. Therefore, a complementary current source circuit for a high-speed D/A converter can be provided.

REFERENCES:
patent: 4327333 (1982-04-01), Wilcox
patent: 4721866 (1988-01-01), Chi et al.
patent: 4939390 (1990-07-01), Coe
patent: 4977378 (1990-12-01), Tero
patent: 5179358 (1993-01-01), Martin
patent: 5396133 (1995-03-01), Zhang
patent: 5430337 (1995-07-01), Castello et al.
patent: 5489868 (1996-02-01), Gilbert
1990 Symposium on VLSI Circuits Digest of Technical Papers, pp. 55-56, Jun. 1990, N. Kumazawa, et. al., "AN 8 Bit 150 MHz CMOS D/A Converter With 2 Vp-p Wide Range Output".
IEEE Journal of Solid-State Circuits, vol. 26, No. 7, pp. 1073-1077, Jul. 1991, Jean Michel Fournier, et. al., "A 130-MHz 8-b CMOS Video DAC For HDTV Applications".

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