Differential switching circuitry

Details Differential switching circuitry Differential switching circuitry

1999-01-08

2000-08-08

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

341136, 341144, 341154, 341155, 341118, H03M 100

Patent

active

061008303

ABSTRACT:
Differential switching circuitry, for use for example in a digital-to-analog converter, includes: a first switch element (S1) connected between a common node (CN) and a first output node (OUT1), and a second switch element (S2) connected between the common node (N) and a second output node (OUT2). First and second driver circuits (12, 14) correspond respectively to the first and second switch elements, each driver circuit switching its corresponding element ON and OFF in dependence upon an applied input signal (IN1, IN2). The driver circuits co-operate such that one switch element is ON when the other is OFF. Each switch element (S1, S2) is paired with a matching element (46, 44) in the other switch element's driver circuit. That matching element (e.g. 44) is coupled operatively to its paired switch element's driver circuit (14) and is matched, e.g. in gate-source potential, with its paired switch element (S2) such that switching of the matching element from OFF to ON is matched with switching of its paired switch element (S2) from OFF to ON, that switching of the matching element serving to bring about switching of said other switch element (S1) from ON to OFF. In such differential switching circuitry, symmetrical switching of the switch elements is ensured even if the input signals do not undergo symmetrical changes.

REFERENCES:
patent: 4961015 (1990-10-01), Shin et al.
patent: 5194866 (1993-03-01), Imaizumi
patent: 5369402 (1994-11-01), Kwon
patent: 5452014 (1995-09-01), Manley
patent: 5612697 (1997-03-01), Mercer
patent: 5689257 (1997-11-01), Mercer et al.
patent: 5696512 (1997-12-01), Takiguchi
Horowitz, Paul & Hill, Winfield, "The Art of Electronics", 2nd Edition, Cambridge University Press, 1989, Chapter 3, Field-Effect Transistors, pp 128.129, and Chapter 9, Digital Meets Analog, pp 614-620.
Analog Devices, 1996, Product Information AD9762, 12-bit, 100MsPs +TxDAC D/A Converter.
RAZAVI, Behzad, "Principles of Data Conversion System Design." pp 90-94.
U.S. application No. 09/227,254, Dedic et al., filed Jan. 8, 1999, Electrostatic Discharge Protection in Semiconductor Devices Fujitsu Limited.
U.S. Ser. No. 09/227,201, Dedic et al., filed Jan. 8, 1999, Mixed-Signal Circuitry and Intergrated Circuit Devices Fujitsu Limited.
U.S. Ser. No. 09/227,200, Schofield et al., filed Jan. 8, 1999, Thermometer Coding Circuitry Fujitsu Microelectronics Limited.

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