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ADM1032ARZ-REEL7 Scheda tecnica(PDF) 3 Page - ON Semiconductor |
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ADM1032ARZ-REEL7 Scheda tecnica(HTML) 3 Page - ON Semiconductor |
3 / 18 page ADM1032 http://onsemi.com 3 PIN ASSIGNMENT Pin No. Mnemonic Description 1 VDD Positive Supply, 3.0 V to 5.5 V. 2 D+ Positive Connection to Remote Temperature Sensor. 3 D− Negative Connection to Remote Temperature Sensor. 4 THERM THERM is an open−drain output that can be used to turn a fan on/off or throttle a CPU clock in the event of an overtemperature condition. Requires pullup to VDD, the same supply as the ADM1032. Note: Please refer to Power Sequencing Considerations; THERM Pin Pullup on page 15 for more information. 5 GND Supply Ground Connection. 6 ALERT Open−Drain Logic Output Used as Interrupt or SMBus Alert. 7 SDATA Logic Input/Output, SMBus Serial Data. Open−drain output. Requires pullup resistor. 8 SCLK Logic Input, SMBus Serial Clock. Requires pullup resistor. ELECTRICAL CHARACTERISTICS Parameter Conditions Min Typ Max Unit Power Supply Supply Voltage, VDD 3.0 3.30 5.5 V Average Operating Supply Current, ICC 0.0625 conversions/sec rate (Note 1) 170 215 mA Standby mode 5.5 10 mA Undervoltage Lockout Threshold VDD input, disables ADC, rising edge 2.35 2.55 2.8 V Power−On Reset Threshold 1.0 2.4 V Temperature−To−Digital Converter Local Sensor Accuracy 0 ≤ TA ≤ 100°C, VCC = 3 V to 3.6 V ±1 ±3 °C Resolution 1.0 °C Remote Diode Sensor Accuracy 60°C ≤ TD ≤ 100°C, VCC = 3 V to 3.6 V ±1 °C 0°C ≤ TD ≤ 120°C ±3 °C Resolution 0.125 °C Remote Sensor Source Current High level (Note 2) 230 mA Low level (Note 2) 13 mA Conversion Time From stop bit to conversion complete Both channels: one−shot mode with averaging switched on 35.7 142.8 ms One−shot mode with averaging off (that is, conversion rate = 32 or 64 conversions per second) 5.7 22.8 ms Open−Drain Digital Outputs (THERM, ALERT) Output Low Voltage, VOL IOUT = −6.0 mA (Note 2) 0.4 V High Level Output Leakage Current, IOH VOUT = VDD (Note 2) 0.1 1.0 mA Serial Bus Timing (Note 2) Logic Input High Voltage, VIH SCLK, SDATA VDD = 3.0 V to 5.5 V 2.1 V Logic Input Low Voltage, VIL VDD = 3.0 V to 5.5 V 0.8 V Hysteresis SCLK, SDATA 500 mV 1. See Table 6 for information on other conversion rates. 2. Guaranteed by design, not production tested. 3. The SMBus timeout is a programmable feature. By default, it is not enabled. Details on how to enable it are available in the Serial Bus Interface section. |
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