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ADS1263IPW Datasheet(PDF) 9 Page - Texas Instruments |
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ADS1263IPW Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 133 page  ADS1262, ADS1263 www.ti.com SBAS661B – FEBRUARY 2015 – REVISED JULY 2015 Electrical Characteristics (continued) Minimum and maximum specifications apply from TA = –40°C to +125°C. Typical specifications are at TA = 25°C. All specifications are at VAVDD = 5 V, VAVSS = 0 V, VDVDD = 3.3 V, VREF = 2.5 V, fCLK = 7.3728 MHz, ADC1 data rate = 20 SPS with PGA enabled and gain = 1, and ADC2 data rate = 10 SPS with gain = 1 (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CROSSTALK ADC1 to ADC2 20 µV/V Crosstalk ADC2 to ADC1 1 µV/V EXTERNAL VOLTAGE REFERENCE INPUTS ADC1 150 nA Reference input current(5) ADC2 1 nA Input current vs voltage VREF = 2 V to 4.8 V, ADC1 10 nA/V Input current drift ADC1 0.1 nA/°C Input impedance Differential, ADC1 50 M Ω Low reference monitor Threshold, ADC1 0.4 0.6 V INTERNAL VOLTAGE REFERENCE Reference voltage 2.5 V Initial accuracy TA = 25°C ±0.1% ±0.2% TA = 0°C to +85°C 2 6 ppm/°C Reference voltage temperature drift TA = –40°C to +105°C 4 12 ppm/°C Reference voltage long term drift TA = 85°C, 1st 1000 hr 50 ppm Thermal hysteresis First 0°C to 85°C cycle 50 ppm Output current -10 10 mA Load regulation 40 µV/mA Start-up time Settling time to ±0.001% final value 50 ms TEMPERATURE SENSOR Voltage TA = 25°C 122.4 mV Temperature coefficient 420 µV/°C CURRENT SOURCES (IDAC1, IDAC2) 50, 100, 250, 500, 750, Currents µA 1000, 1500, 2000, 2500, 3000 Compliance range All currents VAVSS VAVDD – 1.1 V Absolute error All currents ±0.7% ±4% IDAC1 current = IDAC2 current ±0.1% ±1% Match error IDAC1 current ≠ IDAC2 current ±1% Absolute 50 ppm/°C Temperature drift Match 5 20 ppm/°C LEVEL-SHIFT VOLTAGE Voltage (VAVDD + VAVSS) / 2 V Output impedance 100 Ω SENSOR BIAS Currents ±0.5, ±2, ±10, ±50, ±200 µA Pull-up/pull-down resistor 10 M Ω TEST DAC (TDAC) DAC reference voltage VAVDD – VAVSS V Differential output voltage 18 binary weighted settings –4 4 V Absolute output voltage To VAVSS 0.5 4.5 V Accuracy ±0.1% ±1.5% Output impedance See Table 12 (5) Specified with VAVSS ≤ VREFN and VREFP ≤ VAVDD. For reference input voltage exceeding VAVDD or VAVSS, the ADC1 reference input current = 10 nA/ mV. Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: ADS1262 ADS1263 |
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