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ADS1146 Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1146 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 64 page ADS1146 ADS1147 ADS1148 SBAS453F – JULY 2009 – REVISED APRIL 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Minimum/maximum specifications apply from –40°C to +105°C. Typical specifications are at +25°C. All specifications at AVDD = +5V, DVDD = +3.3V, AVSS = DGND = 0V, VREF = +2.048V, and oscillator frequency = 4.096MHz, unless otherwise noted. ADS1146, ADS1147, ADS1148 PARAMETER CONDITIONS MIN TYP MAX UNIT CURRENT SOURCES (IDACS) 50, 100, 250, Output current 500, 750, 1000, μA 1500 Voltage compliance All currents AVDD – 0.7 V Initial error All currents, each IDAC –6 ±1.0 6 % of FS Initial mismatch All currents, between IDACs ±0.03 % of FS Temperature drift Each IDAC 200 ppm/°C Temperature drift matching Between IDACs 10 ppm/°C SYSTEM MONITORS Voltage TA = +25°C 118 mV Temperature sensor reading Drift 405 μV/°C GENERAL-PURPOSE INPUT/OUTPUT (GPIO) VIH 0.7AVDD AVDD V VIL AVSS 0.3AVDD V Logic levels VOH IOH = 1mA 0.8AVDD V VOL IOL = 1mA AVSS 0.2 AVDD V DIGITAL INPUT/OUTPUT (other than GPIO) VIH 0.7DVDD DVDD V VIL DGND 0.3DVDD V Logic levels VOH IOH = 1mA 0.8DVDD V VOL IOL = 1mA DGND 0.2 DVDD V Input leakage DGND < VDIGITAL IN < DVDD ±10 μA Frequency 1 4.5 MHz Clock input (CLK) Duty cycle 25 75 % Internal oscillator frequency 3.89 4.096 4.3 MHz POWER SUPPLY DVDD 2.7 5.25 V AVSS –2.5 0 V AVDD AVSS + 2.7 AVSS + 5.25 V Normal mode, DVDD = 5V, 230 μA data rate = 20SPS, internal oscillator DVDD current Normal mode, DVDD = 3.3V, 210 μA data rate = 20SPS, internal oscillator Sleep mode 0.2 µA Converting, AVDD = 5V, 225 µA data rate = 20SPS, external reference Converting, AVDD = 3.3V, 212 µA data rate = 20SPS, external reference AVDD current Sleep mode 0.1 µA Additional current with internal reference 180 μA enabled AVDD = DVDD = 5V, data rate = 20SPS, 2.3 mW external reference, internal oscillator Power dissipation AVDD = DVDD = 3.3V, data rate = 20SPS, 1.4 mW external reference, internal oscillator TEMPERATURE RANGE Specified –40 +105 °C Operating –40 +125 °C Storage –60 +150 °C 4 Copyright © 2009–2012, Texas Instruments Incorporated |
Similar Part No. - ADS1146_12 |
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Similar Description - ADS1146_12 |
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