MAX1619

远端/本地温度传感器,带有双路报警输出及SMBus串行接口

报警输出用于管理系统温度,确保系统的性能、可靠性,为系统提供有效的保护措施


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说明

The MAX1619 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor-typically a low-cost, easily mounted 2N3904 NPN type-that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

The 2-wire serial interface accepts standard System Management Bus (SMBus™) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 7 bits plus sign, with each bit corresponding to 1°C, in two's complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply-current drain.

The MAX1619 is nearly identical to the popular MAX1617A, with the additional feature of an overtemperature alarm output (active-low OVERT) that responds to the remote temperature; this is optimal for fan control.
MAX1619:典型工作电路 MAX1619:典型工作电路 放大+

关键特性

  • Two Channels Measure Both Remote and Local Temperatures
  • No Calibration Required
  • SMBus 2-Wire Serial Interface
  • Programmable Under/Overtemperature Alarms
  • Active-Low OVERT Output for Fan Control
  • Supports SMBus Alert Response
  • Supports Manufacturer and Device ID Codes
  • Accuracy
    • ±2°C (+60°C to +100°C, local)
    • ±3°C (-40°C to +125°C, local)
    • ±3°C (+60°C to +100°C, remote)
  • 3µA (typ) Standby Supply Current
  • 70µA (max) Supply Current in Auto-Convert Mode
  • +3V to +5.5V Supply Range
  • Write-Once Protection
  • Small 16-Pin QSOP Package

应用

  • 局端电信设备
  • 计算机:台式机、工作站和服务器
  • 工业控制
  • LAN服务器
  • 多芯片模块
  • 智能电池组/充电器
  • 测试与测量设备
Part NumberSensor TypeAlarm OutputFunctionsInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Temp. Thresh.Temp. Resolution
(bits)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
MAX1619 Remote
Alert
Overt
Remote & Local Sensor2-Wire/I2C/SMBusOne3NoProgrammable8-40 to +125
QSOP/16
$5.49 @1k
查看所有Temperature Sensors (111)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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类型 编号 PDF 标题
应用笔记 687 Distributed Temperature Sensing Improves Reliability