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ADS1222IPWTG4 Datasheet(PDF) 6 Page - Texas Instruments |
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ADS1222IPWTG4 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 26 page ADS1222 SBAS314B − APRIL 2004 − REVISED JANUARY 2009 www.ti.com 6 TYPICAL CHARACTERISTICS At TA = −40°C to +85°C, VDD = +5V, fCLK = 2MHz, and VREF = +2.5V, unless otherwise noted. Figure 1 ANALOG CURRENT vs TEMPERATURE Temperature ( _C) 400 375 350 325 300 275 250 225 200 0 −25 25 50 75 125 −50 100 f CLK =4MHz, VDD= 5V f CLK =2MHz, VDD = 3V fCLK =4MHz, VDD= 3V f CLK =2MHz, VDD=5V Buffer Off Figure 2 f CLK =4MHz, VDD= 5V f CLK =2MHz, VDD=3V f CLK =4MHz, VDD= 3V f CLK =2MHz, VDD= 5V Buffer On ANALOG CURRENT vs TEMPERATURE 550 500 450 400 350 300 Temperature ( _C) 0 −25 25 50 75 125 −50 100 Figure 3 ANALOG CURRENT vs SUPPLY VOLTAGE Supply Voltage (V) 3.5 3.0 4.0 4.5 5.0 5.5 2.5 500 450 400 350 300 250 Buffer Off Buffer On f CLK =2MHz f CLK =2MHz f CLK =4MHz f CLK =4MHz Figure 4 TEMPERATURE SENSOR VOLTAGE vs TEMPERATURE Temperature ( _C) 5 −25 35 65 95 125 −55 150 140 130 120 110 100 90 80 70 Figure 5 Input Voltage, V IN (V) −3 −4 −2 −1 0 12 34 5 −5 10 8 6 4 2 0 −2 −4 −6 −8 −10 INTEGRAL NONLINEARITY vs INPUT VOLTAGE −40_C +25 _C +85 _C f CLK =2MHz Buffer Off Figure 6 −1.5 −2.5 −0.5 0.5 1.5 2.5 3.5 −3.5 INTEGRAL NONLINEARITY vs INPUT VOLTAGE Input Voltage, V IN (V) f CLK =2MHz Buffer On 10 8 6 4 2 0 −2 −4 −6 −8 −10 −40_C +25 _C +85 _C |
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