Datasheet ADT7461 (ON Semiconductor) - 4
| Hersteller | ON Semiconductor |
| Beschreibung | +-1C Temperature Monitor with Series Resistance Cancellation |
| Seiten / Seite | 20 / 4 — ADT7461. Table 5. ELECTRICAL CHARACTERISTICS. Parameter. Conditions. Min. … |
| Revision | 8 |
| Dateiformat / Größe | PDF / 275 Kb |
| Dokumentensprache | Englisch |
ADT7461. Table 5. ELECTRICAL CHARACTERISTICS. Parameter. Conditions. Min. Typ. Max. Unit. Power Supply. Temperature-To-Digital Converter
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ADT7461 Table 5. ELECTRICAL CHARACTERISTICS
(TA = −40°C to +120°C, VDD = 3.0 V to 5.5 V, unless otherwise noted).
Parameter Conditions Min Typ Max Unit Power Supply
Supply Voltage, VDD 3.0 3.30 5.5 V Average Operating Supply Current, IDD 0.0625 Conversions/Sec Rate (Note 1) − 170 215 mA Standby Mode, –40°C ≤ TA ≤ +85°C − 5.5 10 Standby Mode, +85°C ≤ TA ≤ +120°C − 5.5 20 Undervoltage Lockout Threshold VDD input, disables ADC, rising edge 2.2 2.55 2.8 V Power-On-Reset Threshold 1.0 − 2.5 V
Temperature-To-Digital Converter
Local Sensor Accuracy −40°C ≤ TA ≤ +100°C, 3.0 V ≤ VDD ≤ 3.6 V − ±1.0 ±3.0 °C Resolution − 1.0 − °C Remote Diode Sensor Accuracy +60°C ≤ TA ≤ +100°C, − − ±1.0 °C −55°C ≤ TD (Note 2) ≤ +150°C, 3.0 V ≤ VDD ≤ 3.6 V −40°C ≤ TA ≤ +120°C, − − ±3.0 −55°C ≤ TD (Note 2) ≤ +150°C, 3.0 V ≤ VDD ≤ 5.5 V Resolution − 0.25 − °C Remote Sensor Source Current High Level (Note 3) − 96 − mA Middle Level (Note 3) − 36 − Low Level (Note 3) − 6.0 − Conversion Time From stop bit to conversion complete (both channels), 32.13 − 114.6 ms one-shot mode with averaging switched on One-shot mode with averaging off (that is, conversion 3.2 − 12.56 rate = 16, 32, or 64 conversions per second) Maximum Series Resistance Cancelled Resistance split evenly on both the D+ and D– inputs − 3.0 − kW
Open-Drain Digital Outputs (THERM, ALERT/THERM2)
Output Low Voltage, VOL IOUT = −6.0 mA (Note 3) − − 0.4 V High Level Output Leakage Current, IOH VOUT = VDD (Note 3) − 0.1 1.0 mA ALERT Output Low Sink Current ALERT Forced to 0.4 V 1.0 − − mA
SMBus Interface
(Note 3 and 4) Logic Input High Voltage, VIH SCLK, SDATA 3.0 V ≤ VDD ≤ 3.6 V 2.1 − − V Logic Input Low Voltage, VIL SCLK, SDATA 3.0 V ≤ VDD ≤ 3.6 V − − 0.8 V Hysteresis − 500 − mV SMBus Output Low Sink Current SDATA Forced to 0.6 V 6.0 − − mA Logic Input Current, IIH, IIL −1.0 − +1.0 mA SMBus Input Capacitance, SCLK, SDATA − 5.0 − pF SMBus Clock Frequency − − 400 kHz SMBus Timeout (Note 5) User Programmable − 25 64 ms SCLK Falling Edge to SDATA Valid Time Master Clocking in Data − − 1.0 ms 1. See Table 9 for information on other conversion rates. 2. Guaranteed by characterization, but not production tested. 3. Guaranteed by design, but not production tested. 4. See the SMBUS Timing Specifications section for more information. 5. Disabled by default; see the Serial Bus Interface section for details on enabling it.
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ADT7461 Table 5. ELECTRICAL CHARACTERISTICS
(TA = −40°C to +120°C, VDD = 3.0 V to 5.5 V, unless otherwise noted).
Parameter Conditions Min Typ Max Unit Power Supply
Supply Voltage, VDD 3.0 3.30 5.5 V Average Operating Supply Current, IDD 0.0625 Conversions/Sec Rate (Note 1) − 170 215 mA Standby Mode, –40°C ≤ TA ≤ +85°C − 5.5 10 Standby Mode, +85°C ≤ TA ≤ +120°C − 5.5 20 Undervoltage Lockout Threshold VDD input, disables ADC, rising edge 2.2 2.55 2.8 V Power-On-Reset Threshold 1.0 − 2.5 V
Temperature-To-Digital Converter
Local Sensor Accuracy −40°C ≤ TA ≤ +100°C, 3.0 V ≤ VDD ≤ 3.6 V − ±1.0 ±3.0 °C Resolution − 1.0 − °C Remote Diode Sensor Accuracy +60°C ≤ TA ≤ +100°C, − − ±1.0 °C −55°C ≤ TD (Note 2) ≤ +150°C, 3.0 V ≤ VDD ≤ 3.6 V −40°C ≤ TA ≤ +120°C, − − ±3.0 −55°C ≤ TD (Note 2) ≤ +150°C, 3.0 V ≤ VDD ≤ 5.5 V Resolution − 0.25 − °C Remote Sensor Source Current High Level (Note 3) − 96 − mA Middle Level (Note 3) − 36 − Low Level (Note 3) − 6.0 − Conversion Time From stop bit to conversion complete (both channels), 32.13 − 114.6 ms one-shot mode with averaging switched on One-shot mode with averaging off (that is, conversion 3.2 − 12.56 rate = 16, 32, or 64 conversions per second) Maximum Series Resistance Cancelled Resistance split evenly on both the D+ and D– inputs − 3.0 − kW
Open-Drain Digital Outputs (THERM, ALERT/THERM2)
Output Low Voltage, VOL IOUT = −6.0 mA (Note 3) − − 0.4 V High Level Output Leakage Current, IOH VOUT = VDD (Note 3) − 0.1 1.0 mA ALERT Output Low Sink Current ALERT Forced to 0.4 V 1.0 − − mA
SMBus Interface
(Note 3 and 4) Logic Input High Voltage, VIH SCLK, SDATA 3.0 V ≤ VDD ≤ 3.6 V 2.1 − − V Logic Input Low Voltage, VIL SCLK, SDATA 3.0 V ≤ VDD ≤ 3.6 V − − 0.8 V Hysteresis − 500 − mV SMBus Output Low Sink Current SDATA Forced to 0.6 V 6.0 − − mA Logic Input Current, IIH, IIL −1.0 − +1.0 mA SMBus Input Capacitance, SCLK, SDATA − 5.0 − pF SMBus Clock Frequency − − 400 kHz SMBus Timeout (Note 5) User Programmable − 25 64 ms SCLK Falling Edge to SDATA Valid Time Master Clocking in Data − − 1.0 ms 1. See Table 9 for information on other conversion rates. 2. Guaranteed by characterization, but not production tested. 3. Guaranteed by design, but not production tested. 4. See the SMBUS Timing Specifications section for more information. 5. Disabled by default; see the Serial Bus Interface section for details on enabling it.
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