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DAC729JH датащи(PDF) 9 Page - Burr-Brown (TI) |
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DAC729JH датащи(HTML) 9 Page - Burr-Brown (TI) |
9 / 12 page DAC729 9 FIGURE 9. Typical Hook-Up Diagram with “Holy Point” Ground and Kelvin Sense Load, Using Internal Op Amp and Reference. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 + 1µF + 1µF + 1µF –15V +15V +5V V DD Common Digital Common 18-Bit DAC R L Analog Common I OUT Ref. Out Ref. In With the DAC connected for 0 to 10V output (Figure 13), the adjustment procedure is to set the DAC code and mea- sure as follows: FOURTH MSB ADJUSTMENT (Pin 36) 1. Set Code = 11 1100 0000 0000 0000 2. Measure V OUT 3. Set Code = 11 1011 1111 1111 1111 4. Measure V OUT and record the difference. 5. Adjust 4th MSB potentiometer to make difference +38 µV. 6. Repeat steps 1 through 5 to confirm. THIRD MSB ADJUSTMENT (Pin 37) 1. Set Code = 11 1000 0000 0000 0000 2. Measure V OUT 3. Set Code = 11 0111 1111 1111 1111 4. Measure V OUT and record the difference. 5. Adjust 3rd MSB potentiometer to make difference +38 µV. 6. Repeat steps 1 through 5 to confirm. FIGURE 7. V REF Adjust. R S 1M Ω 20k Ω 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 Holy Point Ground Connection R S = 1MΩ Gives 20mV Adjustment Range Ref. Adj. Ref. Out Ref. In FIGURE 8. Effect of V REF Adjust on a COB Connected DAC729. 00000 H Input = 3FFFF H MSB On, All Others Off 2FFFF H Range of Gain Adjust Digital Input Offset Adjust Translates the Line + Full Scale Gain Adjust Rotates the Line – Full Scale |
Аналогичный номер детали - DAC729JH |
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Аналогичное описание - DAC729JH |
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