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ADT7461A Datasheet(PDF) 4 Page - Analog Devices |
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ADT7461A Datasheet(HTML) 4 Page - Analog Devices |
4 / 24 page ADT7461A Rev. A | Page 4 of 24 SPECIFICATIONS TA = −40°C to +125°C, VDD = 3 V to 3.6 V, unless otherwise noted. Table 2. Parameter Min Typ Max Unit Test Conditions POWER SUPPLY Supply Voltage, VDD 3.0 3.30 3.6 V Average Operating Supply Current, IDD 240 350 μA 0.0625 conversions/sec rate1 5 30 μA Standby mode Undervoltage Lockout Threshold 2.55 V VDD input, disables ADC, rising edge Power-On-Reset Threshold 1 2.5 V TEMPERATURE-TO-DIGITAL CONVERTER Local Sensor Accuracy ±1 °C 0°C ≤ TA ≤ +70°C ±1.5 °C 0°C ≤ TA ≤ +85°C ±2.5 °C −40°C ≤ TA ≤ +100°C Resolution 1 °C Remote Diode Sensor Accuracy ±1 °C 0°C ≤ TA ≤ +70°C, −55°C ≤ TD2 ≤ +150°C ±1.5 °C 0°C ≤ TA ≤ +85°C, −55°C ≤ TD2 ≤ +150°C ±2.5 °C −40°C ≤ TA ≤ +100°C, −55°C ≤ TD2 ≤ +150°C Resolution 0.25 °C Remote Sensor Source Current 220 μA High level3 82 μA Middle level3 13.5 μA Low level3 Conversion Time 40 52 ms From stop bit to conversion complete, one-shot mode with averaging switched on 6 8 ms One-shot mode with averaging off (that is, conversion rate = 16-, 32-, or 64-conversions per second) Maximum Series Resistance Cancelled 1. 5 kΩ Resistance split evenly on both the D+ and D– inputs OPEN-DRAIN DIGITAL OUTPUTS (THERM, ALERT/THERM2) Output Low Voltage, VOL 0.4 V IOUT = −6.0 mA High Level Output Leakage Current, IOH 0.1 1 μA VOUT = VDD SMBus INTERFACE3, 4 Logic Input High Voltage, VIH 2.1 V 3 V ≤ VDD ≤ 3.6 V SCLK, SDATA Logic Input Low Voltage, VIL 0.8 V 3 V ≤ VDD ≤ 3.6 V SCLK, SDATA Hysteresis 500 mV SDA Output Low Voltage, VOL 0.4 V IOUT = −6.0 mA Logic Input Current, IIH, IIL −1 +1 μA SMBus Input Capacitance, SCLK, SDATA 5 pF SMBus Clock Frequency 400 kHz SMBus Timeout5 25 64 ms User programmable SCLK Falling Edge to SDATA Valid Time 1 μs Master clocking in data 1 See Table 10 for information on other conversion rates. 2 Guaranteed by characterization, but not production tested. 3 Guaranteed by design, but not production tested. 4 See SMBus Timing Specifications section for more information. 5 Disabled by default. Detailed procedures to enable it are in the Serial Bus Interface section of this data sheet. |
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