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ADS1243SKGD1 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS1243SKGD1 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 40 page  ADS1243-HT www.ti.com SBAS525 – DECEMBER 2011 DIGITAL CHARACTERISTICS (continued) VDD 2.7 V to 5.25 V TA = –55°C to 125°C TA = 210°C PARAMETER TEST CONDITIONS UNIT MIN TYP MAX MIN TYP MAX Master Clock Period: 1/fOSC 200 1000 200 1000 ns tOSC ELECTRICAL CHARACTERISTICS: VDD = 5 V All specifications VDD = 5 V, fMOD = 19.2 kHz, PGA = 1, Buffer ON, fDATA = 15 Hz, VREF ≡ (REF IN+) – (REF IN–) = 2.5 V, unless otherwise specified. TA = –55°C to 125°C TA = 210°C PARAMETER TEST CONDITIONS UNIT MIN TYP MAX MIN TYP MAX ANALOG INPUT (AIN0 – AIN7) Buffer OFF GND – 0.1 VDD + 0.1 GND – 0.1 VDD + 0.1 V Analog Input Range Buffer ON GND + 0.05 VDD – 1.5 GND + 0.05 VDD – 1.5 V (In+) – (In–), See Block Diagram, ±VREF/PGA ±VREF/PGA V RANGE = 0 Full-Scale Input Range ±VREF/ ±VREF/ RANGE = 1 V (2 ● PGA) (2 ● PGA) Buffer OFF 5/PGA 12/PGA M Ω Differential Input Impedance Buffer ON 5 8 G Ω fDATA = 3.75 Hz –3 dB 1.65 Hz Bandwidth fDATA = 7.50 Hz –3 dB 3.44 Hz fDATA = 15 Hz –3 dB 14.6 Hz Programmable Gain User-Selectable Gain Ranges 1 128 1 128 Amplifier Input Capacitance 9 25 pF Input Leakage Current Modulator OFF, T = 25 °C 5 6 pA Burnout Current Sources 2 µA OFFSET DAC ±VREF / ±VREF / RANGE = 0 V (2 ● PGA) (2 ● PGA) Offset DAC Range ±VREF / ±VREF / RANGE = 1 V (4 ● PGA) (4 ● PGA) Offset DAC Monotonicity 8 8 Bits Offset DAC Gain Error ±10 ±15 % Offset DAC Gain Error Drift 1 2.2 ppm/ °C SYSTEM PERFORMANCE Resolution No Missing Codes 24 24 Bits Integral Nonlinearity End Point Fit ±0.0015 ±0.0018 % of FS ppm of Offset Error(1) 7.5 15 FS ppm of Offset Drift(1) 0.02 0.04 FS/ °C Gain Error(1) 0.005 0.100 % Gain Error Drift(1) 0.5 1.118 ppm °°C at DC 100 94 dB Common-Mode Rejection fCM = 60 Hz, fDATA = 15 Hz 130 100 dB fCM = 50 Hz, fDATA = 15 Hz 120 100 dB fSIG = 50 Hz, fDATA = 15 Hz 100 95 dB Normal-Mode Rejection fSIG = 60 Hz, fDATA = 15 Hz 100 95 dB Output Noise See Typical Characteristics (1) Calibration can minimize these errors. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): ADS1243-HT |
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