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ADS1178 Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1178 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 39 page  ADS1174 ADS1178 SBAS373B – OCTOBER 2007 – REVISED SEPTEMBER 2008 ........................................................................................................................................ www.ti.com ELECTRICAL CHARACTERISTICS (continued) Limit specifications at TA = –40°C to +105°C. Typical specifications at TA = +25°C, AVDD = +5V, DVDD = +1.8V, IOVDD = +3.3V, fCLK = 27MHz, VREFP = 2.5V, VREFN = 0V, and all channels active, unless otherwise noted. ADS1174, ADS1178 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOLTAGE REFERENCE INPUTS Reference input voltage (VREF) VREF = VREFP – VREFN 0.5 2.5 3.1 V Negative reference input (VREFN) AGND – 0.1 AGND + 0.1 V Positive reference input (VREFP) VREFN + 0.5 VREFN + 3.1 V High-Speed mode 2.6 k Ω ADS1174 Reference Input impedance Low-Power mode 13 k Ω High-Speed mode 1.3 k Ω ADS1178 Reference Input impedance Low-Power mode 6.5 k Ω DIGITAL INPUT/OUTPUT (IOVDD = 1.8V to 3.6V) VIH 0.7 IOVDD IOVDD V VIL DGND 0.3 IOVDD V VOH IOH = 4mA 0.8 IOVDD IOVDD V VOL IOL = 4mA DGND 0.2 IOVDD V Input leakage 0 < VIN DIGITAL < IOVDD ±10 µA Master clock rate (fCLK) 0.1 27 MHz POWER SUPPLY AVDD 4.75 5 5.25 V DVDD 1.65 1.8 1.95 V IOVDD 1.65 3.6 V AVDD 1 10 µA Power-down current DVDD 1 15 µA IOVDD 1 10 µA ADS1174 High-Speed mode 23 35 mA ADS1174 AVDD current Low-Power mode 5 9 mA High-Speed mode 10 15 mA ADS1174 DVDD current Low-Power mode 2.5 4.5 mA High-Speed mode 0.075 0.3 mA ADS1174 IOVDD current Low-Power mode 0.02 0.15 mA High-Speed mode 135 210 mW ADS1174 Power dissipation Low-Power mode 30 55 mW ADS1178 High-Speed mode 44 64 mA ADS1178 AVDD current Low-Power mode 9 14 mA High-Speed mode 12 17 mA ADS1178 DVDD current Low-Power mode 3 4.5 mA High-Speed mode 0.125 0.5 mA ADS1178 IOVDD current Low-Power mode 0.035 0.2 mA High-Speed mode 245 355 mW ADS1178 Power dissipation Low-Power mode 50 80 mW 4 Submit Documentation Feedback Copyright © 2007–2008, Texas Instruments Incorporated Product Folder Link(s): ADS1174 ADS1178 |
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