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ADS1218 Datasheet(PDF) 3 Page - Burr-Brown (TI) |
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ADS1218 Datasheet(HTML) 3 Page - Burr-Brown (TI) |
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3 / 28 page  3 ADS1218 SBAS187 ELECTRICAL CHARACTERISTICS: AVDD = 5V (Cont.) All specifications TMIN to TMAX, AVDD = +5V, DVDD = +2.7V to 5.25V, fMOD = 19.2kHz, fOSC = 2.4576MHz, PGA = 1, Buffer ON, RDAC = 150kΩ, fDATA =10Hz, VREF ≡ (REF IN+) – (REF IN–) = +2.5V, unless otherwise specified. VOLTAGE REFERENCE INPUT Reference Input Range REF IN+, REF IN– 0AVDD V VREF VREF ≡ (REF IN+) – (REF IN–) 0.1 2.5 2.6 V Common-Mode Rejection at DC 120 dB Common-Mode Rejection fVREFCM = 60Hz, fDATA = 60Hz 120 dB Bias Current(3) VREF = 2.5V 1.3 µA ON-CHIP VOLTAGE REFERENCE Output Voltage REF HI = 1 at 25 °C 2.495 2.50 2.505 V REF HI = 0 1.25 V Short-Circuit Current Source 8mA Short-Circuit Current Sink 50 µA Short-Circuit Duration Sink or Source Indefinite Drift 5 ppm/ °C Noise BW = 0.1Hz to 100Hz 10 µVp-p Output Impedance Sourcing 100 µA3 Ω Startup Time 50 µs 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 Maximum Short-Circuit Current Duration RDAC = 10kΩ Indefinite RDAC = 0Ω 10 Minutes Monotonicity RDAC = 150kΩ 8Bits Compliance Voltage 0AVDD – 1V Output Impedance see Typical Characteristics PSRR VOUT = AVDD /2 400 ppm/V Absolute Error Individual IDAC 5 % Absolute Drift Individual IDAC 75 ppm/ °C Mismatch Error Between IDACs, Same Range and Code 0.25 % 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 + IDAC) PDWN = 0, or SLEEP 1 nA ADC 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 IDAC Current (IDAC) 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= LOW 1 nA Power Dissipation PGA = 1, Buffer OFF, REFEN = 0, 1.8 2.8 mW IDACS OFF, DVDD = 5V TEMPERATURE RANGE Operating –40 +85 °C Storage –60 +100 °C NOTES: (1) Calibration can minimize these errors. (2) ∆ V OUT is change in digital result. (3) 12pF switched capacitor at fSAMP clock frequency. ADS1218 PARAMETER CONDITIONS MIN TYP MAX UNITS |
Similar Part No. - ADS1218 |
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Similar Description - ADS1218 |
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