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ADT7473 Fiches technique(PDF) 4 Page - Analog Devices |
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ADT7473 Fiches technique(HTML) 4 Page - Analog Devices |
4 / 76 page ADT7473 Rev. A | Page 4 of 76 SPECIFICATIONS TA VMIN to VMAX, unless other noted.1 Table 1. Pa in yp it est Conditions/Comments = TMIN to TMAX, VCC = wise rameter M T Max Un T POWER SUPPLY Supply Voltage .0 6 3 3.3 3. V Supply Current, ICC 1.5 A terface inactive, ADC active 3 m In TE ERTER MP-TO-DIGITAL CONV Local Sensor Accuracy 0.5 TA ≤ 85°C ± ±1.5 °C 0°C ≤ ±2.5 ≤ TA ≤ 125°C °C −40°C Resolution 0.25 °C Remote Diode Sensor Accuracy 1.5 ≤ 85°C ±0.5 ± °C 0°C ≤ TA ±2.5 ≤ TA ≤ +125°C °C −40°C Resolution 0.25 °C Remote Sensor Source Current irst current 6 µA F 6 econd current 3 µA S 6 d current 9 µΑ Thir AN CONVERTER (IN D ATTENTUATORS) ALOG-TO-DIGITAL N CLUDING MUX A Total Unadjusted Error (TUE) ±1.5 % Differential Nonlinearity (DNL) ±1 LSB 8 bits Power Supply Sensitivity 0.1 ± %/V Conversion Time (Voltage Input) 11 ms Averaging enabled Conversion Time (Local Temperature) 12 ms Averaging enabled Conversion Time (Remote Temperature) 38 ms Averaging enabled Total Monitoring Cycle Time 145 ms Averaging enabled 19 ms Averaging disabled Input Resistance 70 120 kΩ For VCCP channel FAN RPM-TO-DIGITAL CONVERTER Accuracy ±6 % 0°C ≤ T ≤ 70°C A ±10 % −40°C ≤ TA ≤ +120°C Full-Scale Count 65,535 Nominal Input RPM 109 RPM Fan count = 0xBFFF 329 RPM Fan count = 0x3FFF 5,000 RPM Fan count = 0x0438 10,000 RPM Fan count = 0x021C OPEN-DRAIN DIGITAL OUTPUTS, PWM1 TO PWM3, XTO Current Sink, IOL 8.0 mA Output Low Voltage, VOL 0.4 V IOUT = −8.0 mA High Level Output Current, IOH µA VOUT = VCC 0.1 20 OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA) Output Low Voltage, VOL 0.4 V IOUT = −4.0 mA High Level Output Current, IOH 0.1 1.0 µA VOUT = VCC SMBus DIGITAL INPUTS (SCL, SDA) Input High Voltage, VIH 2.0 V Input Low Voltage, VIL 0.4 V Hysteresis 500 mV |
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