The MAX31820PAR ambient temperature sensor provides 9-bit to 12-bit Celsius temperature measurements with ±0.5°C accuracy over a +10°C to +45°C temperature range. Over its entire -55°C to +125°C operating range, the device has ±2.0°C accuracy.

The device communicates over a 1-Wire® bus that, by definition, requires only one data line (and ground) for communication with a central microprocessor. In addition, the device derives power directly from the data line (“parasite power”), eliminating the need for an external power supply. Requiring so few pins enables the device to be placed in a 3-pin TO-92 package. The form factor of this package allows the device to be placed above the board and thus measure the ambient temperature of a system, as opposed to the board temperature that a surface-mount package would measure.

Each MAX31820PAR has a unique 64-bit serial code, which allows multiple MAX31820PAR devices to function on the same 1-Wire bus. Therefore, it is simple to use one microprocessor to control many devices distributed over a large area.

• MAX8685A|MAX8685C|MAX8685D|MAX8685F - 氙闪光灯充电器，提供IGBT驱动及电压监测
• ICL7117 - 3 1/2位ADC，可直接驱动LCD显示/保持
• DS1870 - LDMOS RF功放偏置控制器
• MAX4798 - 450mA/500mA限流开关
• MAX5902 - +72V、SOT23/TDFN封装、Simple Swapper热插拔控制器
• MAX5921 - -48V热插拔控制器，外置RSENSE、提供较高的栅极下拉电流
• MAX4936 - 八通道高压发送器/接收器开关
• DS2775 - 独立式、2节Li+电池电量计IC，提供保护电路和SHA-1认证选项
• MAX4521 - 四路、低电压、SPST模拟开关
• MAX1076 - 1.8Msps、单电源、低功耗、真差分、10位ADC，内置电压基准