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ADS8664IDBTR Datasheet(PDF) 11 Page - Texas Instruments |
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ADS8664IDBTR Datasheet(HTML) 11 Page - Texas Instruments |
11 / 79 page 0 500 1000 1500 2000 2500 3000 2045 2046 2047 2048 2049 2050 2051 Output Codes C007 0 500 1000 1500 2000 2500 3000 2045 2046 2047 2048 2049 2050 2051 Output Codes C008 0 160 320 480 640 800 0.85 0.88 0.91 0.94 0.97 1 1.03 1.06 1.09 1.12 1.15 Input Impedance (M ) C006 -70 0 70 140 210 280 350 ±40 ±7 26 59 92 125 Free-Air Temperature (oC) C005 ---- ± 2.5*V REF, ---- 1.25*VREF ---- 0.625*VREF, ------0.3125*VREF -------0.156 VREF, ---- + 2.5*VREF ---- + 1.25*V REF, ---- + 0.625*VREF ---- + 0.3125*V REF ±15 ±9 ±3 3 9 15 ±10 ±6 ±2 2 6 10 Input Voltage (V) C001 ---- ± 2.5*V REF, ---- 1.25*VREF ---- 0.625*VREF, ------0.3125*VREF -------0.156 VREF, ---- + 2.5*VREF ---- + 1.25*V REF, ---- + 0.625*VREF ---- + 0.3125*V REF ±15 ±9 ±3 3 9 15 ±10 ±6 ±2 2 6 10 Input Voltage (V) C002 ----- -400C ----- 250C ----- 1250C ADS8664, ADS8668 www.ti.com SBAS492 – JULY 2015 7.7 Typical Characteristics At TA = 25°C, AVDD = 5 V, DVDD = 3 V, internal reference VREF = 4.096 V, and fSAMPLE = 500 kSPS, unless otherwise noted. Input range = ±2.5 × VREF Figure 2. Input I-V Characteristic Figure 3. Input Current vs Temperature Number of samples = 1160 Figure 4. Input Impedance Variation vs Temperature Figure 5. Typical Distribution of Input Impedance Mean = 2048, sigma = 0.0, input = 0 V, Mean = 2048, sigma = 0.0, input = 0 V, range = ±2.5 × VREF range = ±1.25 × VREF Figure 6. DC Histogram for Mid-Scale Inputs (±2.5 × VREF) Figure 7. DC Histogram for Mid-Scale Inputs (±1.25 × VREF) Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: ADS8664 ADS8668 |
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