MAX1617

远端/本地温度传感器,带有SMBus串行接口

新设计推荐使用MAX1617A


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说明

The MAX1617 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 MAX1617 is available in a small, 16-pin QSOP surface-mount package.
MAX1617:典型工作电路 MAX1617:典型工作电路 放大+

关键特性

  • Two Channels: Measures Both Remote and Local Temperatures
  • No Calibration Required
  • SMBus 2-Wire Serial Interface
  • Programmable Under/Overtemperature Alarms
  • Supports SMBus Alert Response
  • 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
  • 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

MAX1617EVKIT: MAX1617温度传感器评估板
产品可靠性报告: MAX1617.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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