ADT7483A

更新时间： 2024-11-23 11:51:55

品牌	Logo	应用领域
安森美 - ONSEMI		传感器温度传感器
页数	文件大小	规格书
24页	311K
描述
Dual Channel Temperature Sensor and Over Temperature Alarm

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中文翻译

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ADT7483A 数据手册

Dual Channel Temperature Sensor

and Over Temperature Alarm

ADT7483A

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 ADT7483A¹is a three-channel digital thermometer and

under/over temperature alarm, intended for use in PCs and

thermal management systems. It can measure the temperature

in two remote locations, for example, the remote thermal diode

in a CPU or GPU, or a discrete diode connected transistor. It can

also measure its own ambient temperature. The temperature of the

remote thermal diode and ambient temperature 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 overtemperature fail-safe

Small 16-lead QSOP package

outputs

THERM

240 μA operating current, 5 μA standby current

The ADT7483A communicates over a 2-wire serial interface

compatible with system management bus (SMBus) standards.

The SMBus address is set by the ADD0 and ADD1 pins. As

many as nine different SMBus addresses are possible.

APPLICATIONS

Desktop and notebook computers

Industrial controllers

Smart batteries

An ALERT output signals when the on-chip or remote

temperature is outside the programmed limits. The THERM

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

control of a cooling fan. The ALERT output can be reconfigured

as a second THERM output, if required.

Automotive

Embedded systems

Burn-in applications

Instrumentation

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–

LOCAL TEMPERATURE

HIGH LIMIT REGISTER

ANALOG

MUX

11-BIT A-TO-D

CONVERTER

D2+ 12

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

SMBus INTERFACE

ADT7483A

GND

SDATA SCLK

ADD0 ADD1

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.

February 2008 – Rev. 1

Publication Order Number:

ADT7483A/D

12 3 4 5 6 7...24

中文翻译

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与ADT7483A相关器件

型号	品牌	获取价格	描述	数据表
ADT7483AARQZ	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7483AARQZ	ONSEMI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7483AARQZ-R7	ONSEMI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7483AARQZ-REEL	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7483AARQZ-REEL7	ADI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7483AARQZ-RL	ONSEMI	获取价格	Dual Channel Temperature Sensor and Over Temperature Alarm
ADT7484A	ONSEMI	获取价格	Digital Temperature Sensor with SST Interface
ADT7484A	ADI	获取价格	Digital Temperature Sensor with SST Interface
ADT7484AARMZ-R7	ONSEMI	获取价格	Digital Temperature Sensor with SST Interface
ADT7484AARMZ-REEL	ADI	获取价格	Digital Temperature Sensor with SST Interface

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