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ADS1226IRGVT Datasheet(PDF) 3 Page - Texas Instruments |
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ADS1226IRGVT Datasheet(HTML) 3 Page - Texas Instruments |
3 / 30 page ELECTRICAL CHARACTERISTICS ADS1225 ADS1226 www.ti.com ....................................................................................................................................................... SBAS346C – MAY 2006 – REVISED JANUARY 2009 All specifications at TA = –40°C to +105°C, AVDD = +5V, DVDD = +3V, and VREF = +5V, unless otherwise noted. ADS1225, ADS1226 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Analog Input Full-scale input voltage AINP – AINN ±VREF V Buffer off; AINP, AINN with respect to GND GND – 0.1 AVDD + 0.1 V Absolute input voltage Buffer on; AINP, AINN with respect to GND GND + 0.05 AVDD – 1.5 V Buffer off 2 M Ω Differential input impedance Buffer on 1 G Ω Common-mode input impedance Buffer off 4 M Ω System Performance Resolution 24 Bits High-Speed mode 75 100 125 SPS(1) Data rate High-Resolution mode 12 16 22 SPS(1) Integral nonlinearity (INL) End-point fit 0.0005 0.0020 % of FSR(2) Offset error 60 200 µV Offset error drift 0.3 µV/°C Gain error 0.004 0.025 % Gain error drift 0.3 ppm/°C Common-mode rejection At dc 85 95 dB Analog power-supply rejection At dc, ± 10% Δ in AVDD 95 dB Digital power-supply rejection At dc, DVDD = 2.7V to 5.5V 80 dB High-Speed mode 1.5 ppm of FSR, rms Noise High-Resolution mode 0.4 ppm of FSR, rms Temperature Sensor Temperature sensor voltage TA = +25°C 106 mV Temperature sensor coefficient 360 µV/°C Voltage Reference Input Reference input voltage VREF = VREFP – VREFN 0.5 AVDD V Negative reference input GND – 0.1 VREFP – 0.5 V Positive reference input VREFN + 0.5 AVDD + 0.1 V Voltage reference impedance 1.5 M Ω (1) SPS = samples per second. (2) FSR = full-scale range = 2 × VREF. Copyright © 2006–2009, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): ADS1225 ADS1226 |
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