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ADC0800PD датащи(PDF) 5 Page - National Semiconductor (TI) |
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ADC0800PD датащи(HTML) 5 Page - National Semiconductor (TI) |
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5 / 10 page ![]() Application Hints (Continued) ZERO AND FULL-SCALE ADJUSTMENT Zero Adjustment This is the offset voltage required at the bottom of the R-network (pin 5) to make the 11111111 to 11111110 transition when the input voltage is LSB (20 mV for a 1024V scale) In most cases this can be accom- plished by havinga1kX pot on pin 5 A resistor of 475X can be used as a non-adjustable best approximation from pin 5 to ground Full-Scale Adjustment This is the offset voltage required at the top of the R-network (pin 15) to make the 00000001 to 00000000 transition when the input voltage is 1 LSB from full-scale (60 mV less than full-scale for a 1024V scale) This voltage is guaranteed to be within g2 LSB for the ADC0800 without adjustment In most cases adjust- ment can be accomplished by having a 1 kX pot on pin 15 Typical Applications General Connection TLH5670 – 11 Hi-Voltage CMOS Output Levels 0V to 10V VIN range 0V to 10V output levels TLH5670 – 12 Ratiometric Input Signal with Tracking Reference TLH5670 – 4 5 |
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