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ADT7481ARMZ-1REEL7

更新时间: 2024-02-14 16:34:34
品牌 Logo 应用领域
亚德诺 - ADI 传感器换能器温度传感器输出元件
页数 文件大小 规格书
24页 515K
描述
Dual Channel Temperature Sensor and Over Temperature Alarm

ADT7481ARMZ-1REEL7 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Obsolete包装说明:TSSOP10,.19,20
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.19
Is Samacsys:N最大精度(摄氏度):2.5 Cel
主体宽度:3 mm主体高度:0.85 mm
主体长度或直径:3 mm外壳:PLASTIC
JESD-609代码:e3安装特点:SURFACE MOUNT
位数:8端子数量:10
最大工作电流:0.35 mA最高工作温度:120 °C
最低工作温度:-40 °C输出接口类型:2-WIRE INTERFACE
封装主体材料:PLASTIC/EPOXY封装等效代码:TSSOP10,.19,20
封装形状/形式:SQUARE电源:3.3 V
传感器/换能器类型:TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别:Other Sensors
最大供电电压:3.6 V最小供电电压:3 V
表面贴装:YES端子面层:Matte Tin (Sn)
端接类型:SOLDERBase Number Matches:1

ADT7481ARMZ-1REEL7 数据手册

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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 ADT74811 is 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  
An  
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  
REGISTER  
ONE-SHOT  
REGISTER  
CONVERSION RATE  
LOCAL TEMPERATURE  
THERM LIMIT REGISTER  
REGISTER  
ON-CHIP TEMP  
SENSOR  
LOCAL TEMPERATURE  
VALUE REGISTER  
LOCAL TEMPERATURE  
LOW LIMIT REGISTER  
2
3
7
8
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  
8
ALERT/THERM2  
STATUS REGISTERS  
ADT7481  
SMBUS INTERFACE  
1
6
9
10  
4
V
GND  
SDATA  
SCLK  
DD  
THERM  
Figure 1.  
1 Protected 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  
©2005 Analog Devices, Inc. All rights reserved.  
 
 

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