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Category: Inside Circuits Views: 5284 Rank: 1 This system performs a complete conversion of 12 bits in 10 p unipolar or bipolar. This converter is accurate to ± 12-bit LSB Y2 and a typical gain TC of 10 ppm / ° C. In unipolar mode, the system range is 0 V to 9.9976 V, with each bit having a value of 2.44 mY. For the accuracy of true conversion, an A / D converter must be trimmed so that, given the results just the exit code of input levels of Y2 Y2 LSB LSB below to above the exact voltage represents the code.  Therefore, the converter zero point should be cut with an input voltage of 1.22 mY; R trim until the LSB is just beginning to appear in the exit (all other bits `0`) . For the entire scale, use an input voltage of 9.9963 V (10-VI LSB LSB Y2), then cut R2 until the LSB is just beginning to appear (all other bits `1 `). Bipolar signal range - 5.0 V to 4.9976 V. Bipolar offset cutting is done by applying a - 4.9988 V input signal and trimming R3 for LSB transition (all other bits `0`). On a large scale is determined by applying cutting R2 4.9963 V and the transition to LSB (all other bits `1`). Datasheet file1: Click here to download DM2504.pdf datasheet. Datasheet file2: Click here to download TL5242.pdf datasheet. Datasheet file3: Click here to download LM317.pdf datasheet.
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Analog-to-Digital Converters II
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