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ADT7461ARMZ-2REEL PDF预览

ADT7461ARMZ-2REEL

更新时间: 2024-11-07 14:23:47
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
24页 392K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO8, LEAD FREE, MO-187-AA, MSOP-8, Analog IC:Other

ADT7461ARMZ-2REEL 数据手册

 浏览型号ADT7461ARMZ-2REEL的Datasheet PDF文件第2页浏览型号ADT7461ARMZ-2REEL的Datasheet PDF文件第3页浏览型号ADT7461ARMZ-2REEL的Datasheet PDF文件第4页浏览型号ADT7461ARMZ-2REEL的Datasheet PDF文件第5页浏览型号ADT7461ARMZ-2REEL的Datasheet PDF文件第6页浏览型号ADT7461ARMZ-2REEL的Datasheet PDF文件第7页 
± ±1°C TemTꢀratꢀTCꢁMonaMꢀCꢂnaꢃ  
STꢀnTsCRTsnsarocTC°rocTllranMo  
C
AD 746±  
GENERAL DESCRIPTION  
FEATURES  
The ADT74611 is a dual-channel digital thermometer and  
under/over temperature alarm intended for use in PCs and  
thermal management systems. It is pin- and register-compatible  
with the ADM1032. The ADT7461 has three additional  
features: series resistance cancellation (where up to 3 kΩ  
(typical) of resistance in series with the temperature monitoring  
diode may be automatically cancelled from the temperature  
On-chip and remote temperature sensor  
0.25°C resolution/1°C accuracy on remote channel  
1°C resolution/3°C accuracy on local channel  
Automatically cancels up to 3 kΩ (typ) of resistance in series  
with remote diode to allow noise filtering  
Extended, switchable temperature measurement range  
0°C to +127°C (default) or –55°C to +150°C  
Pin- and register-compatible with the ADM1032  
2-wire SMBus serial interface with SMBus alert support  
Two SMBus address versions available:  
ADT7461 SMBus address is 0x4C  
ALERT  
result, allowing noise filtering); configurable  
output;  
and an extended, switchable temperature measurement range.  
The ADT7461 can accurately measure the temperature of a  
remote thermal diode to 1ꢀC and the ambient temperature to  
3ꢀC. The temperature measurement range defaults to 0ꢀC to  
+127ꢀC, compatible with the ADM1032, but can be switched to  
a wider measurement range of −55ꢀC to +150ꢀC. The ADT7461  
communicates over a 2-wire serial interface compatible with  
ADT7461-2 SMBus address is 0x4D  
Programmable over/under temperature limits  
Offset registers for system calibration  
THERM  
Up to two over temperature fail-safe  
outputs  
Small 8-lead SOIC or8-lead MSOP packages  
170 μA operating current, 5.5 μA standby current  
ALERT  
system management bus (SMBus) standards. An  
signals when the on-chip or remote temperature is out of range.  
THERM  
output  
The  
control of a cooling fan. The  
THERM  
output is a comparator output that allows on/off  
APPLICATIONS  
ALERT  
output can be reconfigured  
output, if required.  
Desktop and notebook computers  
Industrial controllers  
Smart batteries  
Embedded systems  
Instrumentation  
as a second  
The SMBus address of the ADT7461 is 0x4C. An ADT7461-2  
is also available, which uses SMBus Address 0x4D.  
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.  
CONVERSION RATE  
ADDRESS POINTER  
REGISTER  
REGISTER  
ON-CHIP  
TEMPERATURE  
SENSOR  
LOCAL TEMPERATURE  
LOW LIMIT REGISTER  
LOCAL TEMPERATURE  
VALUE REGISTER  
LOCAL TEMPERATURE  
HIGH LIMIT REGISTER  
ANALOG  
MUX  
ADC  
REMOTE TEMPERATURE  
LOW LIMIT REGISTER  
BUSY  
RUN/STANDBY  
REMOTE TEMPERATURE  
HIGH LIMIT REGISTER  
D+  
D–  
REMOTE TEMPERATURE  
VALUE REGISTER  
2
3
SRC  
BLOCK  
LOCAL THERM LIMIT  
REGISTER  
REMOTE OFFSET  
REGISTER  
EXTERNAL THERM LIMIT  
REGISTER  
CONFIGURATION  
REGISTER  
EXTERNAL DIODE OPEN CIRCUIT  
INTERRUPT  
STATUS REGISTER  
MASKING  
ADT7461  
SMBus INTERFACE  
6
4
1
5
7
8
V
GND  
SDATA  
SCLK  
THERM  
ALERT/  
DD  
THERM2  
Figure 1. Functional Block Diagram  
Rev. B  
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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