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ES5 Folha de dados(PDF) 6 Page - Cyrustek corporation |
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ES5 Folha de dados(HTML) 6 Page - Cyrustek corporation |
6 / 8 page Ver 1.1 14/10/21 6 ES5 True RMS-to-DC Converter High-Accuracy Adjustments The accuracy of the ES5 can be further improved by the external trimming scheme as shown in Figure 2. The input should be grounded and R1 adjusted to give 0V output offset from pin 9. Alternatively, R1 could be adjusted to give the correct output with the lowest expected value of VIN. The R4 is in series with the pin13 to lower the range of the scale factor. Connect the desired full scale to VIN by using a DC or AC signal (ex. 500mVRMS), and R3 is trimmed to give the correct value for a calibrated signal. ABSOLUTE VALUE SQUARER/ BIAS BUFFIN COMMON OUTPUT CS DEN INPUT + Vs 1 2 3 4 5 7 6 NC OFFSET 14 13 12 11 10 8 9 BUFFOUT VIN NC +VS RMSOUT CAV + Vs - Vs - VS VIN NC ES6 DIVIDER + - + - + CAV VOUT + - - Vs + Vs SCALEFACTORTRM R1 R2 R3 R4 4.7K 100K 500K 2K 4.7uF 150 Figure 2. Optional External Gain and Offset Trims Chip Select The ES5 provides a chip select pin (Pin 5). To enable the device, this pin must be connected to +Vs. If it is connected to –Vs or floated, the device will enter power-down mode. The current it draws at this mode is less than 10uA. (Figure 1.) ES5 |
Nº de peça semelhante - ES5 |
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Descrição semelhante - ES5 |
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