Datasheet > G782

G782

更新时间： 2024-10-30 01:25:15

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描述
Â±1C Remote and Local Temperature Sensor with SMBus Serial Interface

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中文翻译

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数据手册

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G782 数据手册

Global Mixed-mode Technology Inc.

G782

±1°C Remote and Local Temperature Sensor with

SMBus Serial Interface

Features

General Description

Three Channels: Measures Two Remote and

The G782 is a precise digital thermometer that re-

ports the temperature of 2 remote sensors and its

own package. The remote sensors are diode-

connected transistors typically a low-cost, easily

mounted 2N3904 NPN type that replace conventional

thermistors or thermocouples. Remote accuracy is

±1°C with no calibration needed. It also has a

build-in noise filtering function in remote sensor

measuring the diode temperature. The remote chan-

nel can also measure the die temperature of other

ICs, such as microprocessors, that contain an

on-chip, diode-connected transistor.

One Local Temperatures

Measure Thermal Diode with a Transistor Model

Support Single-Core, Dual-Core and Quad-Core

CPU Application

No Calibration Required

Built-in Noise-Buster for Remote Sensor

SMBus 2-Wire Serial Interface

Programmable Under/Overtemperature Alarms

Supports SMBus Alert Response

Accuracy:

±1°C (+60°C to +100°C, remote)

±3°C (+60°C to + 100°C, local)

320µA (typ) Average Supply Current During

Conversion

The 2-wire serial interface accepts standard System

Management Bus (SMBus) Write Byte, Read Byte,

Send Byte, and Receive Byte commands to program

the alarm thresholds and to read temperature data.

The data format is 11bits plus sign, with each bit cor-

responding to 0.125°C, in two’s-complement format.

Measurements can be done automatically and

autonomously, with the conversion rate programmed

by the user or programmed to operate in a sin-

gle-shot mode. The adjustable rate allows the user to

control the supply current drain.

Measure Thermal Diode with Transistor Model

Support 45nm, 65nm and 90nm CPU thermal

diode

+3V to +5.5V Supply Range

Small 8-Lead SOP , MSOP and TDFN Package

Remote Temperature Measurment up to 160°C

by using offset shifting method (see “Measure

Remote Temperature Higher Than 127°C” sec-

tion)

Applications

Desktop and Notebook

Computers

Smart Battery Packs

LAN Servers

The G782 is available in a small, 10-pin MSOP sur-

face-mount package.

Central Office

Telecom Equipment

Test and Measurement

Multi-Chip Modules

Industrial Controllers

Ordering Information

ORDER

NUMBER

G782P71U

TEMP.

RANGE

PACKAGE

(Green)

MARKING

G782

-55°C to +125°C

MSOP-10

Note:P7:MSOP-10

1: Bonding Code

U: Tape & Reel

Pin Configuration

Typical Application Circuit

3V TO 5.5V

0.1µF

G782

CPU

VCC

10kΩ EACH

10 SMBCLK

VCC

DXP1

DXN1

DXP2

DXN2

DXP1

SMBDATA

ALERT

THERM

GND

DXN1

CLOCK

DATA

SMBCLK

SMBDATA

DXP2

DXN2

ALERT

INTERRUPT TO µC

THERM

GND

MSOP-10

Ver: 1.4

Jun 29, 2010

TEL: 886-3-5788833

http://www.gmt.com.tw

中文翻译

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