Direct Interface Circuits (DICs) carry out resistive sensor readings using a\nresistance-to-time-to-digital conversion without the need for analog-to-digital converters. The main\nadvantage of this approach is the simplicity involved in designing a DIC, which only requires some\nadditional resistors and a capacitor in order to perform the conversion. The main drawback is the\ntime needed for this conversion, which is given by the sum of up to three capacitor charge times\nand their associated discharge times. This article presents a modification of the most widely used\nestimation method in a resistive DIC, which is known as the Two-Point Calibration Method (TPCM),\nin which a single additional programmable digital device pin in the DIC and one extra measurement\nin each discharge cycle, made without slowing down the cycle, allow charge times to be reduced\nmore than 20-fold to values around................
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