ADM1032ARMZ-001 查看數據表（PDF） - ON Semiconductor

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ADM1032ARMZ-001

±1°C Remote and Local System Temperature Monitor

ON Semiconductor 

ADM1032

PIN ASSIGNMENT

Pin No.

1

2

Mnemonic

VDD

D+

3

D−

4

THERM

5

GND

6

ALERT

7

SDATA

8

SCLK

Description

Positive Supply, 3.0 V to 5.5 V.

Positive Connection to Remote Temperature Sensor.

Negative Connection to Remote Temperature Sensor.

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.

Supply Ground Connection.

Open−Drain Logic Output Used as Interrupt or SMBus Alert.

Logic Input/Output, SMBus Serial Data. Open−drain output. Requires pullup resistor.

Logic Input, SMBus Serial Clock. Requires pullup resistor.

ELECTRICAL CHARACTERISTICS

Parameter

Power Supply

Supply Voltage, VDD

Average Operating Supply Current, ICC

Undervoltage Lockout Threshold

Power−On Reset Threshold

Temperature−To−Digital Converter

Local Sensor Accuracy

Resolution

Remote Diode Sensor Accuracy

Resolution

Remote Sensor Source Current

Conversion Time

Conditions

0.0625 conversions/sec rate (Note 1)

Standby mode

VDD input, disables ADC, rising edge

0 ≤ TA ≤ 100°C, VCC = 3 V to 3.6 V

60°C ≤ TD ≤ 100°C, VCC = 3 V to 3.6 V

0°C ≤ TD ≤ 120°C

High level (Note 2)

Low level (Note 2)

From stop bit to conversion complete

Both channels: one−shot mode with averaging

switched on

Min

Typ

Max Unit

3.0

3.30

5.5

V

170

215

mA

5.5

10

mA

2.35 2.55

2.8

V

1.0

2.4

V

±1

±3

°C

1.0

°C

±1

°C

±3

°C

0.125

°C

230

mA

13

mA

35.7

142.8 ms

One−shot mode with averaging off (that is,

5.7

conversion rate = 32 or 64 conversions per second)

22.8 ms

Open−Drain Digital Outputs (THERM, ALERT)

Output Low Voltage, VOL

High Level Output Leakage Current, IOH

Serial Bus Timing (Note 2)

IOUT = −6.0 mA (Note 2)

VOUT = VDD (Note 2)

Logic Input High Voltage, VIH

SCLK, SDATA

VDD = 3.0 V to 5.5 V

0.4

V

0.1

1.0

mA

2.1

V

Logic Input Low Voltage, VIL

Hysteresis

SCLK, SDATA

VDD = 3.0 V to 5.5 V

0.8

V

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.

http://onsemi.com

3

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