Datasheet > MIC281

MIC281

更新时间： 2024-09-29 22:54:51

品牌	Logo	应用领域
麦瑞 - MICREL		传感器
页数	文件大小	规格书
12页	174K
描述
Low-Cost IttyBitty Thermal Sensor IttyBitty

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中文翻译

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MIC281 数据手册

MIC281

Micrel

MIC281

Low-Cost IttyBitty™ Thermal Sensor IttyBitty®

REV 11/04

General Description

Features

The MIC281 is a digital thermal sensor capable of measuring

the temperature of a remote PN junction. It is optimized for

applications favoring low cost and small size. The remote

junction may be an inexpensive commodity transistor, e.g.,

2N3906, or an embedded thermal diode such as found in

Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs, and Xilinx

Virtex* FPGAs.

• Remote temperature measurement using embedded

thermal diodes or commodity transistors

• Accurate remote sensing

±3°C max., 0°C to 100°C

• Excellent noise rejection

• I C and SMBus 2.0 compatible serial interface

• SMBus timeout to prevent bus lockup

• Voltage tolerant I/Os

• Low power shutdown mode

• Failsafe response to diode faults

• 3.0V to 3.6V power supply range

• IttyBitty™ SOT23-6 Package

The MIC281 is 100% software and hardware backward com-

patiblewiththeMIC280andfeaturesthesameindustry-leading

noise performance and small size. The advanced integrating

A/Dconverterandanalogfront-endreduceerrorsduetonoise

for maximum accuracy and minimum guardbanding.

A2-wireSMBus2.0-compatibleserialinterfaceisprovidedfor

host communication. The clock and data pins are 5V-tolerant

Applications

• Desktop, server and notebook computers

• Set-top boxes

regardless of the value of V . They will not clamp the bus

lines low even if the device is powered down.

Superior performance, low power, and small size make the

MIC281 an excellent choice for cost-sensitive thermal man-

agement applications.

• Game consoles

• Appliances

Typical Application

3.3V

10k

pull-ups

0.1µF

MIC281

DATA

CLK

VDD

SERIAL BUS

HOST

GND

CPU DIODE

2000pF

MIC281 Typical Application

IttyBitty is a registered trademark of Micrel, Inc.

*All trademarks are the property of their respective owners.

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

November 2004

MIC281

12 3 4 5 6 7...12

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与MIC281相关器件

型号	品牌	获取价格	描述	数据表
MIC281_11	MICREL	获取价格	Low-Cost IttyBitty? Thermal Sensor IttyBitty
MIC2810	MICREL	获取价格	Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs
MIC2810	MICROCHIP	获取价格	The MIC2810 is a high performance power management IC, integrating a 2MHz DC/DC switcher w
MIC2810_08	MICREL	获取价格	Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs
MIC2810-1.2/1.2/2.8YML	MICROCHIP	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16
MIC2810-1.2/1.8/3.3YML	MICROCHIP	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16
MIC2810-1.2/2.7/3.3YML	MICROCHIP	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16
MIC2810-1J6JYML-TR	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 2 Channel
MIC2810-1J6SYML-TR	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 2 Channel
MIC2810-1JGMYML-TR	MICROCHIP	获取价格	IC REG TRPL BUCK/LINEAR 16MLF

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