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ADC0804LCWM датащи(PDF) 6 Page - Intersil Corporation |
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ADC0804LCWM датащи(HTML) 6 Page - Intersil Corporation |
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6 / 16 page ![]() 6-10 Typical Performance Curves FIGURE 2. LOGIC INPUT THRESHOLD VOLTAGE vs SUPPLY VOLTAGE FIGURE 3. DELAY FROM FALLING EDGE OF RD TO OUTPUT DATA VALID vs LOAD CAPACITANCE FIGURE 4. CLK IN SCHMITT TRIP LEVELS vs SUPPLY VOLTAGE FIGURE 5. fCLK vs CLOCK CAPACITOR FIGURE 6. FULL SCALE ERROR vs fCLK FIGURE 7. EFFECT OF UNADJUSTED OFFSET ERROR -55oC TO 125oC 1.8 1.7 1.6 1.5 1.4 1.3 4.75 4.50 5.00 5.25 5.50 V+ SUPPLY VOLTAGE (V) 500 400 300 200 100 0 LOAD CAPACITANCE (pF) 200 400 600 800 1000 3.5 3.1 2.7 2.3 1.9 1.5 4.50 V+ SUPPLY VOLTAGE (V) -55oC TO 125oC VT(-) VT(+) 4.75 5.00 5.25 5.50 1000 CLOCK CAPACITOR (pF) 100 100 10 1000 R = 10K R = 50K R = 20K 7 6 5 4 3 2 1 0 fCLK (kHz) 0 400 800 1200 1600 2000 V+ = 4.5V V+ = 5V V+ = 6V VIN(+) = VIN(-) = 0V ASSUMES VOS = 2mV THIS SHOWS THE NEED FOR A ZERO ADJUSTMENT IF THE SPAN IS REDUCED 16 14 12 10 8 6 4 2 VREF/2 (V) 0 0.01 0.1 1.0 5 ADC0802, ADC0803, ADC0804 |
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