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MAX6642

更新时间： 2024-09-16 14:58:07
品牌 Logo 应用领域
亚德诺 - ADI 温度传感传感器温度传感器
页数 文件大小 规格书
14页 1147K
描述
±1°C、SMBus兼容、远端/本地温度传感器，带有过温报警

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MAX6642 数据手册

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Evaluation Kit  
Available  
Design  
Resources  
Tools  
and Models  
Support  
Click here to ask an associate for production status of specific part numbers.  
±1°C, SMBus-Compatible Remote/  
Local Temperature Sensor with  
Overtemperature Alarm  
MAX6642  
General Description  
Benefits and Features  
● Integrated Temperature Sensor Enables Simultaneous  
Dual Temperature (Remote and Local) Measurements  
• Remote Accuracy ±1°C  
The MAX6642 precise, two-channel digital temperature  
sensor accurately measures the temperature of its own  
die and a remote PN junction and reports the temperature  
data over a 2-wire serial interface. The remote PN junction  
is typically a substrate PNP transistor on the die of a CPU,  
ASIC, GPU, or FPGA. The remote PN junction can also be  
a discrete diode-connected small-signal transistor.  
• Local Accuracy ±2°C from +60°C to +100°C  
• Measures Remote Temperature up to +150°C  
• 0.25°C Resolution  
● Dual Zone Monitoring Automates Over-Temperature  
The 2-wire serial interface accepts standard system  
management bus (SMBus™), Write Byte, Read Byte,  
Send Byte, and Receive Byte commands to read the  
temperature data and to program the alarm thresholds.  
To enhance system reliability, the MAX6642 includes  
an SMBus timeout. The temperature data format is 10  
bit with the least significant bit (LSB) corresponding to  
+0.25°C. The ALERT output asserts when the local or  
remote overtemperature thresholds are violated. A fault  
queue may be used to prevent the ALERT output from  
setting until two consecutive faults have been detected.  
Alarms  
• Programmable Remote/Local Temperature  
Thresholds  
• ALERT Output  
● Small Footprint  
• 3mm x 3mm TDFN Package with Exposed Pad  
• Low Thermal Mass Reduces Measurement Latency  
• SMBus/I C Address Hardwired  
2
Ordering Information  
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
6 TDFN-EP*  
6 TDFN-EP*  
6 TDFN-EP*  
6 TDFN-EP*  
6 TDFN-EP*  
6 TDFN-EP*  
6 TDFN-EP*  
6 TDFN-EP*  
Measurements can be done autonomously or in a single-  
shot mode.  
MAX6642ATT90-T  
MAX6642ATT92-T  
MAX6642ATT94-T  
MAX6642ATT96-T  
MAX6642ATT98-T  
MAX6642ATT9A-T  
MAX6642ATT9C-T  
MAX6642ATT9E-T  
Remote accuracy is ±1°C maximum error between +60°C  
and +100°C. The MAX6642 operates from -40°C to  
+125°C, and measures remote temperatures between  
0°C and +150°C. The MAX6642 is available in a 6-pin  
TDFN package with an exposed pad.  
Applications  
● Desktop Computers  
● Notebook Computers  
● Servers  
● Test and Measurement  
● Workstations  
● Graphic Cards  
T = Tape and reel.  
*EP = Exposed pad.  
Pin Configuration and Functional Diagram appear at end of  
data sheet.  
● Thin Clients  
Selector Guide  
Typical Operating Circuit  
TOP  
MARK  
3.3V  
PART  
MEASURED TEMP RANGE  
0.1µF  
47Ω  
MAX6642ATT90-T  
MAX6642ATT92-T  
MAX6642ATT94-T  
MAX6642ATT96-T  
MAX6642ATT98-T  
MAX6642ATT9A-T  
MAX6642ATT9C-T  
MAX6642ATT9E-T  
0°C to +150°C  
0°C to +150°C  
0°C to +150°C  
0°C to +150°C  
0°C to +150°C  
0°C to +150°C  
0°C to +150°C  
0°C to +150°C  
AFC  
AFD  
AFE  
AFF  
AEW  
AFG  
AFH  
AFI  
10kΩ EACH  
V
CC  
MAX6642  
2200pF  
SDA  
DATA  
DXP  
SCLK  
CLOCK  
ALERT  
INTERRUPT TO µP  
GND  
µP  
19-2920; Rev 6; 5/22  
SMBus is a trademark of Intel Corp.  
©
2022 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 © 2022 Analog Devices, Inc. All rights reserved.  
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