ADM1032ARMZ-2R 参数 Datasheet PDF下载

ADM1032

Table 3. PIN ASSIGNMENT

Pin No.

1

2

3

4

Mnemonic

V

DD

D+

D−

THERM

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 V

DD

, 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.

Description

5

6

7

GND

ALERT

SDATA

SCLK

8

Table 4. ELECTRICAL CHARACTERISTICS

Parameter

Power Supply

Supply Voltage, V

DD

Average Operating Supply Current, I

CC

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

High Level (Note 2)

Low Level (Note 2)

From stop bit to conversion complete

Both channels: one-shot mode with averaging

switched on

One-shot mode with averaging off (that is,

conversion rate = 32 or 64 conversions per second)

60C



T

D



100C, V

CC

= 3 V to 3.6 V

0C



T

D



120C

0



T

A



100C, V

CC

= 3 V to 3.6 V

−

−

−

−

−

−

−

35.7

5.7

1

1.0

−

−

0.125

230

13

−

−

3

−

1

3

−

−

−

142.8

22.8

C

C

C

C

mA

ms

0.0625 Conversions/Sec Rate (Note 1)

Standby Mode

V

DD

Input, Disables ADC, Rising Edge

3.0

−

−

2.35

1.0

3.30

170

5.5

2.55

−

5.5

215

10

2.8

2.4

V

mA

mA

V

V

Conditions

Min

Typ

Max

Unit

Open-Drain Digital Outputs (THERM, ALERT)

Output Low Voltage, V

OL

High Level Output Leakage Current, I

OH

Serial Bus Timing

(Note 2)

Logic Input High Voltage, V

IH

SCLK, SDATA

Logic Input Low Voltage, V

IL

Hysteresis

SCLK, SDATA

SDATA Output Low Sink Current

ALERT Output Low Sink Current

Logic Input Current, I

IH

, I

IL

Input Capacitance, SCLK, SDATA

SDATA Forced to 0.6 V

ALERT Forced to 0.4 V

V

DD

= 3.0 V to 5.5 V

V

DD

= 3.0 V to 5.5 V

2.1

−

−

6.0

1.0

−1.0

−

−

−

500

−

−

−

5.0

−

0.8

−

−

−

+1.0

−

V

V

mV

mA

mA

mA

pF

I

OUT

=

−6.0

mA (Note 2)

V

OUT

= V

DD

(Note 2)

−

−

−

0.1

0.4

1.0

V

mA

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