LM82 datasheet(3/17 Pages) NSC

Part #	LM82

Description	Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

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Manufacturer	NSC [National Semiconductor (TI)]

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Pin Description

Label

Pin #

Function

Typical Connection

NC

1, 5

floating, unconnected

Left floating. PC board traces may be routed

through the pads for these pins. No restrictions

applied.

V

CC

2

Positive Supply Voltage

Input

DC Voltage from 3.0 V to 3.6 V

D+

3

Diode Current Source

To Diode Anode. Connected to remote discrete

diode junction or to the diode junction on a remote

IC whose die temperature is being sensed. When

not used they should be left floating.

D−

4

Diode Return Current

Sink

To Diode Cathode. Must float when not used.

ADD0–ADD1

10, 6

User-Set SMBus (I

2C)

Address Inputs

Ground (Low, “0”), V

CC (High, “1”) or open

(“TRI-LEVEL”)

GND

7, 8

Power Supply Ground

Ground

NC

9, 13, 15

Manufacturing test pins.

Left floating. PC board traces may be routed

through the pads for these pins, although the

components that drive these traces should share

the same supply as the LM82 so that the Absolute

Maximum Rating, Voltage at Any Pin, is not

violated.

INT

11

Interrupt Output,

open-drain

Pull Up Resistor, Controller Interrupt or Alert Line

SMBData

12

SMBus (I

2C) Serial

Bi-Directional Data Line,

open-drain output

From and to Controller, Pull-Up Resistor

SMBCLK

14

SMBus (I

2C) Clock Input

From Controller, Pull-Up Resistor

T_CRIT_A

16

Critical Temperature

Alarm, open-drain output

Pull Up Resistor, Controller Interrupt Line or

System Shutdown

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