LM90 datasheet(2/32 Pages) TI2

Part #	LM90

Description	LM90 ±3°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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2 / 32 page

LM90

SNIS126A – MAY 2004 – REVISED MARCH 2013

www.ti.com

LM90 Simplified Block Diagram

Connection Diagram

Figure 1. 8-Lead VSSOP - TOP VIEW

See DGK Package

PIN DESCRIPTIONS

Label

Pin #

Function

Typical Connection

VDD

Positive Supply Voltage Input

DC Voltage from 3.0 V to 3.6 V

Diode Current Source

To Diode Anode. Connected to remote discrete diode conected

D+

transistor junction or to the diode connected transistor junction

on a remote IC whose die temperature is being sensed.

−

Diode Return Current Sink

To Diode Cathode.

T_CRIT Alarm Output, Open-

Pull-Up Resistor, Controller Interrupt or Power Supply

T_CRIT_A

Drain, Active-Low

Shutdown Control

GND

Power Supply Ground

Ground

Interrupt Output, Open-Drain,

Pull-Up Resistor, Controller Interrupt or Alert Line

ALERT

Active-Low

SMBus Bi-Directional Data Line, From and to Controller, Pull-Up Resistor

SMBData

Open-Drain Output

SMBCLK

SMBus Input

From Controller, Pull-Up Resistor

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