Complementary current source circuit

Details Complementary current source circuit Complementary current source circuit

1995-11-13

1997-05-27

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327108, 327374, 326 17, H03K 17687

Patent

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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