Patent ID: 6501407
Filing Date: 2002-12-31
Classification: H03M

Abstract:
An electronic circuit designed for receiving a first supply voltage (UL) between a first supply connection terminal (VSS) and a second supply connection terminal (VDDL) and for receiving a second supply voltage (UH) between the first supply connection terminal (VSS) and a third supply connection terminal (VDDH), comprising a DA converter (DAC) for converting a digital signal (DS) with a voltage range which is at most equal to the first supply voltage (UL) into an analog signal (UOUT) with a voltage range which is at most equal to the second supply voltage (UH), characterized in that the DA converter (DAC) comprises:conversion resistors (RCNV0-RCNVn) and coupling means (CPL) for coupling a number of said conversion resistors (RCNV2-RCNVn) between the first supply connection terminal (VSS) and an Do output terminal (OUT) of the DA converter (DAC), and for coupling the remaining number of conversion resistors (RCNV0, RCNV1) between the third supply terminal (VDDH) and the output terminal (OUT), said number being dependent on the data content of the digital signal (DS).