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ADS7845 Datasheet(PDF) 4 Page - Texas Instruments |
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ADS7845 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 16 page ® 4 ADS7845 TYPICAL PERFORMANCE CURVES At TA = +25°C, +VCC = +2.7V, VREF = +2.5V, fSAMPLE = 125kHz, and fCLK = 16 • fSAMPLE = 2MHz, unless otherwise noted. SUPPLY CURRENT vs +V CC 3.5 1.5 2 5 2.5 4 +V CC (V) 400 350 300 250 200 150 100 50 4.5 3 f CLOCK = 200kHz V REF = +VCC SUPPLY CURRENT vs TEMPERATURE 20 –40 100 –20 0 40 Temperature ( °C) 400 350 300 250 200 150 100 60 80 POWER-DOWN SUPPLY CURRENT vs TEMPERATURE 20 –40 100 –20 0 40 Temperature ( °C) 140 120 100 80 60 40 20 60 80 MAXIMUM SAMPLE RATE vs +V CC 3.5 1.5 2 5 2.5 4 +V CC (V) 1M 100k 10k 1k 4.5 3 V REF = +VCC 12-Bit Mode 8-Bit Mode CHANGE IN GAIN vs TEMPERATURE 20 –40 100 –20 0 40 Temperature ( °C) 0.15 0.10 0.05 0.00 –0.05 –0.10 –0.15 60 80 CHANGE IN OFFSET vs TEMPERATURE 20 –40 100 –20 0 40 Temperature ( °C) 0.6 0.4 0.2 0.0 –0.2 –0.4 –0.6 60 80 |
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