Datasheet > ADT7481

ADT7481

更新时间： 2024-11-23 04:04:47

品牌	Logo	应用领域
亚德诺 - ADI		传感器温度传感器
页数	文件大小	规格书
24页	515K
描述
Dual Channel Temperature Sensor and Over Temperature Alarm

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

ADT7481 数据手册

Dual Channel Temperature Sensor

and Over Temperature Alarm

ADT7481

FEATURES

GENERAL DESCRIPTION

1 local and 2 remote temperature sensors

0.25°C resolution/1°C accuracy on remote channels

1°C resolution/1°C accuracy on local channel

Extended, switchable temperature measurement range 0°C

to 127°C (default) or –64°C to +191°C

2-wire SMBus serial interface with SMBus ALERT support

Programmable over/under temperature limits

Offset registers for system calibration

The ADT7481¹is a 3-channel digital thermometer and under/

over temperature alarm, intended for use in PCs and thermal

management systems. It can measure its own ambient temperature

or the temperature of two remote thermal diodes. These thermal

diodes can be located in a CPU or GPU, or they can be discrete

diode connected transistors. The ambient temperature, or the

temperature of the remote thermal diode, can be accurately

measured to 1°C. The temperature measurement range defaults

to 0°C to +127°C, compatible with ADM1032, but can be

switched to a wider measurement range from −64°C to +191°C.

Up to 2 over temperature fail-safe THERM outputs

Small 10-lead MSOP package

240 μA operating current, 5 μA standby current

APPLICATIONS

Desktop and notebook computers

Industrial controllers

Smart batteries

The ADT7481 communicates over a 2-wire serial interface

compatible with system management bus (SMBus) standards.

The SMBus address of the ADT7481 is 0x4C. An ADT7481-1

with an SMBus address of 0x4B is also available.

Automotive

ALERT

temperature is outside the programmed limits. The

output is a comparator output that allows, for example, on/off

ALERT

output signals when the on-chip or remote

Embedded systems

Burn-in applications

Instrumentation

THERM

control of a cooling fan. The

output can be reconfigured

output if required.

THERM

as a second

FUNCTIONAL BLOCK DIAGRAM

ADDRESS POINTER

ONE-SHOT

CONVERSION RATE

LOCAL TEMPERATURE

THERM LIMIT REGISTER

ON-CHIP TEMP

SENSOR

LOCAL TEMPERATURE

VALUE REGISTER

LOCAL TEMPERATURE

LOW LIMIT REGISTER

D1+

D1–

D2+

LOCAL TEMPERATURE

HIGH LIMIT REGISTER

ANALOG

MUX

11-BIT A-TO-D

CONVERTER

REMOTE 1 AND 2 TEMP

THERM LIMIT REGISTER

BUSY RUN/STANDBY

D2–

REMOTE 1 AND 2 TEMP

VALUE REGISTERS

REMOTE 1 AND 2 TEMP

LOW LIMIT REGISTERS

REMOTE 1 AND 2 TEMP

HIGH LIMIT REGISTERS

REMOTE 1 AND 2 TEMP

OFFSET REGISTERS

CONFIGURATION

REGISTERS

EXTERNAL DIODES OPEN-CIRCUIT

INTERRUPT

MASKING

ALERT/THERM2

STATUS REGISTERS

ADT7481

SMBUS INTERFACE

GND

SDATA

SCLK

THERM

Figure 1.

¹Protected by U.S. Patents 5,195,827; 5,867,012, 5,982,221; 6,097,239; 6,133,753; 6,169,442, other patents pending.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

12 3 4 5 6 7...24

中文翻译

下载PDF

与ADT7481相关器件

型号	品牌	获取价格	描述	数据表
ADT7481ARMZ	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7481ARMZ	ONSEMI	获取价格	Dual Channel Temperature Sensor and Overtemperature Alarm
ADT7481ARMZ-001	ONSEMI	获取价格	Dual Channel Temperature Sensor and Overtemperature Alarm
ADT7481ARMZ-1	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7481ARMZ-1R7	ONSEMI	获取价格	Dual Channel Temperature Sensor and Overtemperature Alarm
ADT7481ARMZ-1REEL	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7481ARMZ-1REEL7	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7481ARMZ-1RL	ONSEMI	获取价格	Dual Channel Temperature Sensor and Overtemperature Alarm
ADT7481ARMZ-R7	ONSEMI	获取价格	Dual Channel Temperature Sensor and Overtemperature Alarm
ADT7481ARMZ-REEL	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm

与ADT7481相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

35
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

26
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

54
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

52

产品中心

服务支持

精选活动

关于我们

帮助中心

ADT7481

ADT7481 数据手册

与ADT7481相关器件

与ADT7481相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

ADT7481

ADT7481 数据手册

与ADT7481相关器件

与ADT7481相关文章

您还可以找

您在本页遇到什么问题？