• 简体中文
• English

MAX1617A：远端/本地温度传感器，带有SMBus串行接口

高精度、远端/本地温度传感器

The MAX1617A 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 MAX1617A is nearly identical to the popular MAX1617, but has improved SMBus timing specifications, improved bus collision immunity, software manufacturer and device identification available via the serial interface, and a power-on reset function that can force a reset of the slave address via the serial interface.

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 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 Small 16-Pin QSOP Package

MAX1617A：典型工作电路 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

数据手册DataSheet

关键参数

开发工具

• MAX1617AEVKIT

质量和环境数据

• MAX1617A.pdf

订购型号