ADT7462ACPZ-R7 datasheet(5/81 Pages) ONSEMI

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ADT7462

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ELECTRICAL CHARACTERISTICS TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted. (Note 1)

Parameter

Test Conditions / Comments

Min

Typ

Max

Unit

Power Supply

Supply Voltage

3.0

3.3

5.5

Supply Current, ICC

ADC active, Interface inactive (Note 2)

1.5

4.0

Temperature−to−Digital Converter

TA Conditions

VCC Conditions

Internal Sensor, TA, Accuracy

0°C ≤ TA ≤ 85°C

−40°C ≤ TA ≤ +100°C

0°C ≤ TA ≤ 85°C

−40°C ≤ TA ≤ +100°C

3 V ≤ VCC ≤ 3.6 V

4.5 V ≤ VCC ≤ 5.5 V

±0.5

±2.25

±3.25

±3.0

±4.0

°C

Resolution

0.25

°C

Remote Sensor, TD, Accuracy

(−40°C ≤ TD ≤ +125°C)

0°C ≤ TA ≤ 85°C

−40°C ≤ TA ≤ +100°C

0°C ≤ TA ≤ 85°C

−40°C ≤ TA ≤ +100°C

3 V ≤ VCC ≤ 3.6 V

4.5 V ≤ VCC ≤ 5.5 V

±0.5

±2.25

±3.25

±2.75

±3.5

°C

Resolution

0.25

°C

Remote Sensor Source Current

(Note 3)

High level

Mid level

Low level

5.0

Series Resistance Cancellation

(Note 3)

The ADT7462 cancels 2 kW in series with the

remote thermal diode

2.0

ANALOG−TO−DIGITAL CONVERTER

Total Unadjusted Error, TUE

(Note 4 and 5)

±3.5

Differential Non−linearity, DNL

8 bits

±1.0

LSB

Conversion Time (Voltage Input) (Note 3)

8.53

9.86

Conversion Time (Local Temperature)

(Note 3)

9.01

10.38

Conversion Time

(Remote Temperature) (Note 3)

38.36

42.09

INPUT RESISTANCE

Pin 7, Pin 8, Pin 13, Pin 21, Pin 22, Pin

25, Pin 28, Pin 29

Attenuators enabled

140

Pin 15, Pin 19

Attenuators enabled

225

Pin 23, Pin 24

Attenuators enabled

Pin 26, VBATT and +1.2V2

(When Measured)

Attenuators cannot be disabled

100

120

140

VBATT Current Drain

(When Measured)

CR2032 battery life > 10 years

100

VBATT Current Drain

(When Not Measured)

CR2032 battery life > 10 years

FAN RPM TO DIGITAL CONVERTER

Accuracy

±8.0

Internal Clock Frequency

82.8

97.2

kHz

OPEN−DRAIN OUTPUTS (PWM, GPIO)

High Level Output Leakage Current, IOH

VOUT = VCC

0.1

±1.0

Output Low Voltage, VOL

IOUT = −3 mA, VCC = +3.3 V

0.4

DIGITAL OUTPUT (RESET,ALERT, THERM)

Output Low Voltage, VOL

IOUT = −3 mA, VCC = +3.3 V

0.4

RESET Pulse Width (Note 3)

140

180

RESET Threshold

Falling voltage

3.0

3.05

3.1

RESET Hysteresis (Note 3)

ADT7462ACPZ-R7 数据表(PDF) 5 Page - ON Semiconductor

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