| 摘要 |
<p>A method and electronic circuitry for providing a Digital to Analog converter analog output in Integrated Circuit Digital to Analog Converter applications, said analog output being stable over temperature and supply changes, independent on transistor parameters of a particular chip, and stable for transistor parameter variation from chip to chip. An integrated circuit reference cell is implemented; an internal (secondary) reference quantity determining the analog Digital to Analog Converter (DAC) output is generated; the said internal (secondary) reference quantity for the Digital to Analog converter is referenced to on-chip device specific internal (primary) reference output from the chip in question, and the said chip device specific internal (primary) reference output, is processed further in order to derive a fixed predetermined DAC reference value, that is equal for any chip; and said fixed predetermined DAC reference value is supplied to the digital input of said Digital to Analog converter. <IMAGE></p> |
