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ADS1216 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS1216 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 41 page  www.ti.com ELECTRICAL CHARACTERISTICS: AV DD = +5V ADS1216 SBAS171D – NOVEMBER 2000 – REVISED SEPTEMBER 2006 All specifications at T MIN to TMAX, AVDD = +5V, DVDD = +2.7V to +5.25V, fMOD = 19.2kHz, PGA = 1, Buffer ON, RDAC = 150kΩ, f DATA = 10Hz, and VREF = +2.5V, unless otherwise specified. ADS1216 PARAMETER CONDITIONS MIN TYP MAX UNIT ANALOG INPUT (AIN0 – AIN7, AINCOM) Analog input range Buffer OFF AGND – 0.1 AVDD + 0.1 V Buffer ON AGND + 0.05 AVDD – 1.5 V Full-scale input voltage range (In+) – (In–); see Functional Block ±V REF/PGA V Diagram Differential input impedance Buffer OFF 5/PGA M Ω Input current Buffer ON 0.5 nA Bandwidth Fast-settling filter –3dB 0.469 × f DATA Hz –3dB 0.318 × f DATA Hz Sinc2 filter –3dB 0.262 × f DATA Hz Sinc3 filter Programmable gain amplifier User-selectable gain ranges 1 128 Input capacitance 9 pF Input leakage current Modulator OFF, TA = +25°C 5 pA Burnout current sources 2 µA OFFSET DAC Offset DAC range ±V REF /(2 × PGA) V Offset DAC monotonicity 8 Bits Offset DAC gain error ±10 % Offset DAC gain error drift 1 ppm/ °C SYSTEM PERFORMANCE Resolution 24 Bits No missing codes 24 Bits Sinc3 filter Integral nonlinearity End-point fit ±0.0015 % of FS Offset error(1) 7.5 ppm of FS Offset drift(1) 0.02 ppm of FS/ °C Gain error(1) 0.005 % Gain error drift(1) 0.5 ppm/ °C Common-mode rejection At DC 100 dB fCM = 60Hz, fDATA = 10Hz 130 dB fCM = 50Hz, fDATA = 50Hz 120 dB fCM = 60Hz, fDATA = 60Hz 120 dB Normal-mode rejection fSIG = 50Hz, fDATA = 50Hz 100 dB fSIG = 60Hz, fDATA = 60Hz 100 dB Output noise See Typical Characteristics Power-supply rejection At DC, dB = –20 log( ∆V OUT/∆VDD) (2) 80 95 dB VOLTAGE REFERENCE INPUT Reference input range REF IN+, REF IN– AGND AVDD 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 (1) Calibration can minimize these errors. (2) ∆ V OUT is change in digital result. (3) 12pF switched capacitor at fSAMP clock frequency. 3 Submit Documentation Feedback |
Número de pieza similar - ADS1216_14 |
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Descripción similar - ADS1216_14 |
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