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MAX6657：±1°C、SMBus兼容、远端/本地温度传感器，带有过温报警

The MAX6657/MAX6658/MAX6659 are precise, two-channel digital temperature sensors. Each accurately measures the temperature of its own die and one remote PN junction, and reports the temperature in digital form on a 2-wire serial interface. The remote junction can be a diode-connected transistor like the low-cost NPN type 2N3904 or 2N3906 PNP type. The remote junction can also be a common-collector PNP, such as a substrate PNP of a microprocessor. The 2-wire serial interface accepts standard System Management Bus (SMBus™) commands such as Write Byte, Read Byte, Send Byte, and Receive Byte to read the temperature data and program the alarm thresholds and conversion rate. The MAX6657/MAX6658/MAX6659 can function autonomously with a programmable conversion rate, which allows the control of supply current and temperature update rate to match system needs. For conversion rates of 4Hz or less, the temperature is represented in extended mode as 10 bits + sign with a resolution of 0.125°C. When the conversion rate is faster than 4Hz, output data is 7 bits + sign with a resolution of 1°C. The MAX6657/MAX6658/MAX6659 also include an SMBus timeout feature to enhance system reliability. Remote accuracy is ±1°C between +60°C and +100°C with no calibration needed. The MAX6657 measures temperatures from 0°C to +125°C and the MAX6658/MAX6659 from -55°C to +125°C. The MAX6659 has the added benefit of being able to select one of three addresses through an address pin, and a second over-temperature alarm pin for greater system reliability.

关键特性 Dual Channel Measures Remote and Local Temperature 11-Bit, +0.125°C Resolution High Accuracy ±1°C (max) from +60°C to +100°C (Remote) No Calibration Required Programmable Under/Overtemperature Alarms Programmable Conversion Rate (0.0625Hz to 16Hz) SMBus/I²C*-Compatible Interface Two Alarm Outputs: active-low ALERT and active-low OVERT1 (MAX6657 and MAX6658) Three Alarm Outputs: active-low ALERT, active-low OVERT1, and active-low OVERT2 (MAX6659) Compatible with 65nm Process Technology(Y Versions)

MAX6657、MAX6658、MAX6659：典型工作电路 应用 计算机：台式机、工作站和服务器 笔记本电脑 服务器 工作站

数据手册DataSheet

关键参数

技术资料

• Understanding Multidrop Address Assignments for Thermal Sensors
• Effect of PC Board Trace Width on Remote-Diode Temperature-Sensor Accuracy
• Compensating for Ideality Factor and Series Resistance Differences between Thermal-Sense Diodes

质量和环境数据

• MAX6657.pdf

相关产品

• MAX6654：精度为1°C的远端/本地温度传感器，带有SMBus串行接口
• MAX1617：远端/本地温度传感器，带有SMBus串行接口

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