Current driven D/A converter and its bias circuit

Details Current driven D/A converter and its bias circuit Current driven D/A converter and its bias circuit

2007-11-06

2007-11-06

Nguyen, Linh (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S135000, C341S136000

Reexamination Certificate

active

11214723

ABSTRACT:
A current driven D/A converter sets an OFF control voltage (BIAS3) for turning off NMOS transistors M12P, M12N, M22P, M22N, M32P and M32N at a voltage close to an ON control voltage (BIAS2). This makes it possible to reduce the swing of the control voltage (ON control voltage-OFF control voltage) of the NMOS transistors, and hence to reduce the noise due to charge injections through parasitic capacitances, and noise of a ground voltage or power supply voltage due to flowing of discharge currents from the parasitic capacitances to the ground or power supply at turn off of the transistors, thereby being able to offer a high performance current driven D/A converter.

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*David A. Johns et al., “Analog Integrated Circuit Design”, John Wiley & Sons Inc., pp. 248-251, 259-260, no date.

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