Extended reference range, voltage-mode cmos d/a converter

Details Extended reference range, voltage-mode cmos d/a converter Extended reference range, voltage-mode cmos d/a converter

H - Electricity

03

M

328/130

H03M 1/66 (2006.01) H03M 1/00 (2006.01)

Patent

CA 1212730

ABSTRACT OF THE DISCLOSURE A CMOS D/A converter for use in a voltage-mode and having complementary-driven switch pairs for Vref and Agnd respectively. The "ON" gate voltage of the Agnd switch is adjusted in accordance with the value of Vref, to give switch VGS equality and therefore "ON" resistance matching with the Vref switch over a wide range of reference voltage. Circuits are shown for developing the Agnd gate voltage varying with Vref.

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