ADT7481 View Datasheet(PDF) - ON Semiconductor

Part Name

Description

MFG CO.

ADT7481

Dual Channel Temperature Sensor and Overtemperature Alarm

ON Semiconductor 

ADT7481

D1+ 2

D1– 3

D2+ 7

D2– 8

ON−CHIP TEMP

SENSOR

CONVERSION RATE

REGISTER

LOCAL TEMPERATURE

VALUE REGISTER

ANALOG

MUX

11−BIT A−TO−D

CONVERTER

BUSY RUN/STANDBY

REMOTE 1 AND 2 TEMP

VALUE REGISTERS

REMOTE 1 AND 2 TEMP

OFFSET REGISTERS

EXTERNAL DIODES OPEN−CIRCUIT

ADT7481

1

VDD

6

GND

STATUS REGISTERS

SMBUS INTERFACE

9

SDATA

10

SCLK

ADDRESS POINTER

REGISTER

ONE−SHOT

REGISTER

LOCAL TEMPERATURE

THERM LIMIT REGISTER

LOCAL TEMPERATURE

LOW LIMIT REGISTER

LOCAL TEMPERATURE

HIGH LIMIT REGISTER

REMOTE 1 AND 2 TEMP

THERM LIMIT REGISTER

REMOTE 1 AND 2 TEMP

LOW LIMIT REGISTERS

REMOTE 1 AND 2 TEMP

HIGH LIMIT REGISTERS

CONFIGURATION

REGISTERS

INTERRUPT

MASKING

4

THERM

Figure 1. Functional Block Diagram

8 ALERT/THERM2

ABSOLUTE MAXIMUM RATINGS

Parameter

Rating

Unit

Positive Supply Voltage (VDD) to GND

D+

D− to GND

−0.3 to +3.6

V

−0.3 to VDD + 0.3

V

−0.3 to +0.6

V

SCLK, SDATA, ALERT, THERM

−0.3 to +3.6

V

Input Current, SDATA, THERM

−1 to +50

mA

Input Current, D−

±1

mA

ESD Rating, All Pins (Human Body Model)

1500

V

Maximum Junction Temperature (TJ max)

Storage Temperature Range

150

°C

−65 to +150

°C

IR Reflow Peak Temperature

220

°C

IR Reflow Peak Temperature for Pb−Free

260

°C

Lead Temperature, Soldering (10 sec)

300

°C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.

THERMAL CHARACTERISTICS

Package Type

10−Lead MSOP

qJA

qJC

142

43.74

Unit

°C/W

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