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ADS1296R Arkusz danych(PDF) 7 Page - Texas Instruments |
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ADS1296R Arkusz danych(HTML) 7 Page - Texas Instruments |
7 / 88 page ADS1294, ADS1294R ADS1296, ADS1296R ADS1298, ADS1298R www.ti.com SBAS459H – JANUARY 2010 – REVISED OCTOBER 2011 ELECTRICAL CHARACTERISTICS (continued) Minimum/maximum specifications apply for all commercial grade (0 °C to +70°C) devices and from –40°C to +85°C for industrial grades devices. Typical specifications are at +25 °C. All specifications at DVDD = 1.8V, AVDD – AVSS = 3V (1), VREF = 2.4V, external fCLK = 2.048MHz, data rate = 500SPS, High-Resolution mode, and gain = 6, unless otherwise noted. ADS1294, ADS1296, ADS1298 ADS1294R, ADS1296R, ADS1298R PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CLOCK Internal oscillator clock frequency Nominal frequency 2.048 MHz TA = +25°C ±0.5 % 0 °C ≤ TA ≤ +70°C ±2 % Internal clock accuracy –40°C ≤ TA ≤ +85°C, ±2.5 % ADS1298I industrial grade version only Internal oscillator start-up time 20 μs Internal oscillator power consumption 120 μW External clock input frequency CLKSEL pin = 0 1.94 2.048 2.25 MHz DIGITAL INPUT/OUTPUT (DVDD = 1.65V to 3.6V) Logic level VIH 0.8DVDD DVDD + 0.1 V VIL –0.1 0.2DVDD V VOH IOH = –500μA DVDD – 0.4 V VOL IOL = +500μA 0.4 V Input current (IIN) 0V < VDigitalInput < DVDD –10 +10 μA POWER-SUPPLY REQUIREMENTS Analog supply (AVDD – AVSS) 2.7 3.0 5.25 V Digital supply (DVDD) 1.65 1.8 3.6 V AVDD – DVDD –2.1 3.6 V SUPPLY CURRENT (RLD, WCT, and PACE Amplifiers Turned Off) High-Resolution mode (ADS1298) AVDD – AVSS = 3V 2.75 mA IAVDD AVDD – AVSS = 5V 3.1 mA DVDD = 3.0V 0.5 mA IDVDD DVDD = 1.8V 0.3 mA Low-Power mode (ADS1298) AVDD – AVSS = 3V 1.8 mA IAVDD AVDD – AVSS = 5V 2.1 mA DVDD = 3.0V 0.5 mA IDVDD DVDD = 1.8V 0.3 mA POWER DISSIPATION (Analog Supply = 3V, RLD, WCT, and PACE Amplifiers Turned Off) Quiescent power dissipation High-Resolution mode 8.8 9.5 mW ADS1298/8R Low-Power mode (250SPS) 6.0 7.0 mW High-Resolution mode 7.2 7.9 mW ADS1296/6R Low-Power mode 5.3 6.6 mW High-Resolution mode 5.4 6 mW ADS1294/4R Low-Power mode 4.1 4.4 mW Power-down 10 μW Standby mode 2 mW Quiescent channel power PGA + ADC 818 μW Copyright © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): ADS1294 ADS1294R ADS1296 ADS1296R ADS1298 ADS1298R |
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