參數(shù)資料
型號： MAX6649MUA+
廠商： Maxim Integrated
文件頁數(shù)： 1/16頁
文件大小： 194K
描述： IC SENSOR REMOTE SMBUS 8UMAX
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 50
功能： 溫度監(jiān)控系統(tǒng)（傳感器）
傳感器類型： 內(nèi)部和外部
感應(yīng)溫度： -55°C ~ 125°C，外部傳感器
精確度： ±3°C 本地（最大），±3.2°C 遠程（最大）
拓撲： ADC，多路復(fù)用器，寄存器庫
輸出類型： I²C?/SMBus?
輸出警報： 是
輸出風(fēng)扇： 是
電源電壓： 3 V ~ 5.5 V
工作溫度： -55°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 8-uMAX
包裝： 管件
產(chǎn)品目錄頁面： 1423 (CN2011-ZH PDF)
General Description
The MAX6646/MAX6647/MAX6649 are precise, two-
channel digital temperature sensors. The devices accu-
rately measure the temperature of their own die and a
remote PN junction, and report the temperature in digital
form using a 2-wire serial interface. The remote PN junc-
tion is typically the emitter-base junction of a common-
collector PNP on a CPU, FPGA, or ASIC.
The 2-wire serial interface accepts standard system man-
agement 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 MAX6646/MAX6647/MAX6649
include an SMBus timeout. A fault queue prevents the
ALERT and OVERT outputs from setting until a fault has
been detected one, two, or three consecutive times
(programmable).
The MAX6646/MAX6647/MAX6649 provide two system
alarms: ALERT and OVERT. ALERT asserts when any of
four temperature conditions are violated: local overtem-
perature, remote overtemperature, local undertempera-
ture, or remote undertemperature. OVERT asserts when
the temperature rises above the value in either of the two
OVERT limit registers. The OVERT output can be used to
activate a cooling fan, or to trigger a system shutdown.
Measurements can be done autonomously, at the pro-
grammed conversion rate, or in a single-shot mode. The
adjustable conversion rate allows optimizing supply cur-
rent and temperature update rate to match system needs.
Remote accuracy is ?癈 maximum error between +60癈
and +145癈 with no calibration needed. The MAX6646/
MAX6647/MAX6649 operate from -55癈 to +125癈, and
measure temperatures between 0癈 and +145癈. The
MAX6646/MAX6647/MAX6649 are available in an 8-pin
糓AX
?/DIV>
package.
Applications
Features
f Dual Channel: Measures Remote and Local
Temperature
f 0.125?/SPAN>C Resolution
f High Accuracy ?/SPAN>1?/SPAN>C (max) from +60?/SPAN>C to +145?/SPAN>C
(Remote), and ?癈 (max) from +60癈 to +100癈
(Local)
f Measures High-Ideality Thermal Diodes Up to
+170癈 (Apparent)
+145癈 (Real)
f Two Alarm Outputs: ALERT and OVERT
f Programmable Under/Overtemperature Alarm
Temperature Thresholds
f Programmable Conversion Rate
f SMBus-Compatible Interface
f SMBus Timeout
+145癈 Precision SMBus-Compatible Remote/
Local Sensors with Overtemperature Alarms
Ordering Information
V
CC
DXP
DXN
10k?EACH
CLOCK
TO FAN DRIVER OR
SYSTEM SHUTDOWN
3.3V
DATA
INTERRUPT TO 糚
200?/DIV>
0.1糉
SDA
SCLK
ALERT
GND
2200pF
糚
MAX6646
MAX6647
MAX6649
OVERT
Typical Operating Circuit
19-2540; Rev 4; 7/12
1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.
PART
TEMP
RANGE
PIN-
PACKAGE
MEASURED
TEMP RANGE
MAX6646MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
MAX6647MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
MAX6649MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
Selector Guide, Pin Configurations, and Functional Diagram
appear at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
糓AX is a registered trademark of Maxim Integrated Products, Inc.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6649MUA/V+ 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6649MUA/V+T 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6649MUA+ 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6649MUA+T 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6649MUA-G002 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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