Board Mount Temperature Sensors

Board Mount Temperature Sensors 2-Wire Digital Temp Snsr & Thrml Wtchdog

Board Mount Temperature Sensors 2 CH TEMP SNSR/ALARM 2 WIRE SMBUS INTRFCE

Features:

• Read Back Protection (Read Lock)
• Power Supply: 1.0V to 1.65V
• Operating Temperature Range: -40°C to 85°C
• RoHS Compliant / Halogen-Free

Macrocells Overview:

• Two High Speed General Purpose Analog Comparators (ACMPxH);
• Integrated Voltage Reference
• Fifteen Combination Function Macrocells:
  • Three 2-Bit LUT or (DFF/LATCH) or Shift Register;
  • One Selectable Programmable Pattern Generator or 2-bit LUT
  • Ten 3-Bit LUT or (DFF/LATCH) with Set/Reset or Shift Register;
  • One 4-Bit LUT or (DFF/LATCH) with Set/Reset or Shift Register;
• Eight Multi-Function Macrocells:
  • Seven Selectable DFF/Latch or 3-bit LUTs + 8-bit Delay/Counters;
  • One Selectable DFF/Latch or 4-bit LUT + 16-bit Delay/Counter/FSM;
• I²C Communication;
• Programmable Delay with Edge Detector Output;
• Deglitch Filter or Edge Detector;
• Two Oscillators (OSC):
  • 2.048 kHz Oscillator;
  • 25 MHz Oscillator;
• Analog Temperature Sensor;
• Power-On Reset (POR) with CRC.

Applications:

Industrial Humidity Sensors Humidity Temperature Module

0.1C Accurate Digital Temperature Sensor with Integrated NV Memory 6-WSON -55 to 150

WIRELESS TEMP TRANSDUCER 2.4GHZ PT100; Carrier Frequency:2.4GHz; Operating Temperature Min:-20°C; Operating Temperature Max:80°C; Signal Input Type:Pt100 RTD; Networking Interface:-; Kit Contents:Wireless Temp Transducer Battery 1 & 5 - Channel Receiver 5 - Channel Configuration Software

The MAX31820 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 can derive 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 MAX31820 has a unique 64-bit serial code, which allows multiple MAX31820 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.ApplicationsAny Thermally Sensitive SystemConsumer ProductsHVAC Environmental ControlsIndustrial SystemsProcess Monitoring and Control SystemsTemperature Monitoring Systems Inside Buildings, Equipment, or MachineryThermometersThermostatic Controls

The MAX6639 monitors its own temperature and one external diode-connected transistor or the temperatures of two external diode-connected transistors, typically available in CPUs, FPGAs, or GPUs. The 2-wire serial interface accepts standard System Management Bus (SMBus) write byte, read byte, send byte, and receive byte commands to read the temperature data and program the alarm thresholds. Temperature data can be read at any time over the SMBus, and three programmable alarm outputs can be used to generate interrupts, throttle signals, or overtemperature shutdown signals.The temperature data is also used by the internal dual-PWM fan-speed controller to adjust the speed of up to two cooling fans, thereby minimizing noise when the system is running cool, but providing maximum cooling when power dissipation increases. Speed control is accomplished by tachometer feedback from the fan, so that the speed of the fan is controlled, not just the PWM duty cycle. Accuracy of speed measurement is ±4%.The MAX6639 is available in 16-pin QSOP and 16-pin thin QFN 5mm x 5mm packages. It operates from 3.0V to 3.6V and consumes just 500µA of supply current.ApplicationsDesktop ComputersNetworking EquipmentNotebook ComputersProjectorsServers

The LTC2995 is a high accuracy temperature sensor and dual supply monitor. It converts the temperature of an external diode sensor and/or its own die temperature to an analog output voltage while rejecting errors due to noise and series resistance. Two supply voltages and the measured temperature are compared against upper and lower limits set with resistive dividers. If a threshold is exceeded, the device communicates an alert by pulling low the correspondent open drain logic output.The LTC2995 gives ±1°C accurate temperature results using commonly available NPN or PNP transistors or temperature diodes built into modern digital devices. Voltages are monitored with 1.5% accuracy. A 1.8V reference output simplifies threshold programming and can be used as an ADC reference input.The LTC2995 provides an accurate, low power solution for temperature and voltage monitoring in a compact 3mm × 3mm QFN package.Applications Network Servers Core, I/O Voltage Monitors Desktop and Notebook Computers Environmental Monitoring