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ADS1217IPFBR bảng dữ liệu(PDF) 3 Page - Texas Instruments |
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ADS1217IPFBR bảng dữ liệu(HTML) 3 Page - Texas Instruments |
3 / 33 page ADS1217 SBAS260C 3 www.ti.com ELECTRICAL CHARACTERISTICS: AVDD = 5V (Cont.) All specifications at –40 °C to +85°C, AV DD = +5V, DVDD = +2.7V to 5.25V, fMOD = 19.2kHz, PGA = 1, Buffer ON, RDAC = 150kΩ, fDATA = 10Hz, and VREF = +2.5V, unless otherwise specified. ADS1217 PARAMETER CONDITIONS MIN TYP MAX UNITS VOLTAGE REFERENCE INPUT Reference Input (VREF)VREF ≡ (VREF+) – (VREF–) 0.1 2.5 2.6 V Negative Reference Input (VREF–) AGND – 0.1 (VREF+) – 0.1 V Positive Reference Input (VREF+)(VREF–) + 0.1 AVDD + 0.1 V Common-Mode Rejection at DC 120 dB Common-Mode Rejection fVREFCM = 60Hz, fDATA = 60Hz 120 dB Bias Current(3) VREF = 2.5V, PGA = 1 1.3 µA ON-CHIP VOLTAGE REFERENCE Output Voltage REF HI = 1 2.4 2.5 2.6 V REF HI = 0 1.25 V Short-Circuit Current Source 8mA Short-Circuit Current Sink 50 µA Drift 15 ppm/ °C Noise VRCAP = 0.1µF, BW = 0.1Hz to 100Hz 10 µVrms Output Impedance Sourcing 100 µA3 Ω Startup Time 5ms IDAC Full-Scale Output Current RDAC = 150kΩ, Range = 1 0.5 mA RDAC = 150kΩ, Range = 2 1 mA RDAC = 150kΩ, Range = 3 2 mA RDAC = 15kΩ, Range = 3 20 mA Current Setting Resistance (RDAC)10 k Ω Monotonicity RDAC = 150kΩ 8 Bits Compliance Voltage 0AVDD – 1V Output Impedance See Typical Characteristics PSRR VOUT = AVDD/2, Code > 16 400 ppm/V Gain Error Individual IDAC 5 % Gain Error Drift Individual IDAC 75 ppm/ °C Gain Error Mismatch Between IDACs, Same Range and Code 0.25 % Gain Error Mismatch Drift Between IDACs, Same Range and Code 15 ppm/ °C POWER-SUPPLY REQUIREMENTS Power-Supply Voltage AVDD 4.75 5.25 V Analog Current (IADC + IVREF + IIDAC) PDWN = 0, or SLEEP 1 nA A/D Converter Current (IADC) PGA = 1, Buffer OFF 175 275 µA PGA = 128, Buffer OFF 500 750 µA PGA = 1, Buffer ON 250 350 µA PGA = 128, Buffer ON 900 1375 µA VREF Current (IVREF) 250 375 µA IIDAC Current (IIDAC) Excludes Load Current 480 675 µA Digital Current Normal Mode, DVDD = 5V 180 275 µA SLEEP Mode, DVDD = 5V 150 µA Read Data Continuous Mode, DVDD = 5V 230 µA PDWN = 0 1 nA Power Dissipation PGA = 1, Buffer OFF, REFEN = 0, 1.8 2.8 mW IDACs OFF, DVDD = 5V NOTES: (1) FSR is Full-Scale Range. (2) ∆V OUT is change in digital result. (3) 12pF switched capacitor at fSAMP clock frequency. |
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