# AD8495 Analog Output K-Type Thermocouple Amplifier ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/074/028/medium800/adafruit_products_AD8495_Thermocouple.jpg?1554396709) Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. We have a couple digital thermocouple amplifiers in the shop already from Maxim. Now we're happy to introduce an excellent analog-output amplifier. This is a very simple sensor to use, and if your microcontroller has analog input capability, you'll be ready to go really fast! ![](https://cdn-learn.adafruit.com/assets/assets/000/074/029/medium800/adafruit_products_AD8495_Back.jpg?1554396720) The AD8495 K-type thermocouple amplifier from Analog Devices is so easy to use, we documented the whole thing on the back of the tiny PCB. Power the board with 3-18VDC and measure the output voltage on the **OUT** pin. You can easily convert the voltage to temperature with the following equation: Temperature = (Vout - 1.25) / 0.005 V. So, for example, if the voltage is 1.5VDC, the temperature is (1.5 - 1.25) / 0.005 = 50°C. ![](https://cdn-learn.adafruit.com/assets/assets/000/074/030/medium800/adafruit_products_AD8495_Top_Header.jpg?1554396729) Each order comes with a 2 pin terminal block (for connecting to the thermocouple), a fully assembled PCB with the AD8495 + TLVH431 1.25V precision voltage reference, and pin header (to plug into any breadboard or perfboard). [Goes great with our 1m K-type thermocouple (not included)](http://www.adafruit.com/products/270). Not for use with any other kind of thermocouple, K type only! - Works with any K type thermocouple - Will not work with any other kind of thermocouple other than K type - Easy to use analog output - Temp range with 5V power: **-250°C to +750°C output** (0 to 5VDC) as long as the thermocouple can handle that range - Temp range with 3.3V power: **-250°C to +410°C output** (0 to 3.3VDC) as long as the thermocouple can handle that range - For higher temperatures you'll need to power with a higher voltage, so you can get the analog reading out. **Note:**  The terminal blocks included with your product may be blue or black. - [Next Page](https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts.md) ## Primary Products ### Analog Output K-Type Thermocouple Amplifier - AD8495 Breakout [Analog Output K-Type Thermocouple Amplifier - AD8495 Breakout](https://www.adafruit.com/product/1778) Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. We have a couple digital thermocouple amplifiers in the shop already from Maxim. Now we're happy to introduce an excellent analog-output amplifier. This is a very simple sensor to use, and if... In Stock [Buy Now](https://www.adafruit.com/product/1778) [Related Guides to the Product](https://learn.adafruit.com/products/1778/guides) ## Featured Products ### Thermocouple Type-K Glass Braid Insulated [Thermocouple Type-K Glass Braid Insulated](https://www.adafruit.com/product/270) Thermocouples are best used for measuring temperatures that can go above 100 °C. This is a bare wires bead-probe which can measure air or surface temperatures. Most inexpensive thermocouples have a vinyl covering which can melt at around 200 °C, this one uses a fiberglass braid so it... In Stock [Buy Now](https://www.adafruit.com/product/270) [Related Guides to the Product](https://learn.adafruit.com/products/270/guides) ### Thermocouple Type-K Glass Braid Insulated Stainless Steel Tip [Thermocouple Type-K Glass Braid Insulated Stainless Steel Tip](https://www.adafruit.com/product/3245) Thermocouples are best used for measuring temperatures that can go above 100°C. This is a bare wires stainless-steel tip probe which can measure air or surface temperatures. Most inexpensive thermocouples have a vinyl covering which can melt at around 200°C, this one uses a fiberglass... Out of Stock [Buy Now](https://www.adafruit.com/product/3245) [Related Guides to the Product](https://learn.adafruit.com/products/3245/guides) ### Thermocouple Type-K Glass Braid Insulated - 5m [Thermocouple Type-K Glass Braid Insulated - 5m](https://www.adafruit.com/product/3895) Thermocouples are best used for measuring temperatures that can go above 100°C. This is a bare-wire bead-probe which can measure air or surface temperatures. Most inexpensive thermocouples have a vinyl covering which can melt at around 200°C, this one uses a fiberglass braid so it can... In Stock [Buy Now](https://www.adafruit.com/product/3895) [Related Guides to the Product](https://learn.adafruit.com/products/3895/guides) ## Related Guides - [Adafruit MCP9601 I2C Thermocouple Amplifier](https://learn.adafruit.com/adafruit-mcp9601.md) - [Adafruit PCT2075 Temperature Sensor](https://learn.adafruit.com/adafruit-pct2075-temperature-sensor.md) - [Adafruit DACx578 - 8 x Channel I2C DAC](https://learn.adafruit.com/adafruit-dac7578-8-x-channel-12-bit-i2c-dac.md) - [Adafruit PCF8591 Basic 4 x ADC + DAC Breakout](https://learn.adafruit.com/adafruit-pcf8591-adc-dac.md) - [Adafruit TPS65131 Split Power Supply Boost Converter](https://learn.adafruit.com/adafruit-tps65131-split-power-supply-boost-converter.md) - [Adafruit SHT31-D Temperature & Humidity Sensor Breakout](https://learn.adafruit.com/adafruit-sht31-d-temperature-and-humidity-sensor-breakout.md) - [Adafruit Si4713 FM Radio Transmitter with RDS/RDBS Support](https://learn.adafruit.com/adafruit-si4713-fm-radio-transmitter-with-rds-rdbs-support.md) - [Getting Started with Microsoft Azure and CircuitPython](https://learn.adafruit.com/getting-started-with-microsoft-azure-and-circuitpython.md) - [PyRuler Video Conference Panic Buttons](https://learn.adafruit.com/pyrulervideopanic.md) - [Ladyada's Toolkit](https://learn.adafruit.com/ladyadas-toolkit.md) - [Adafruit PCA9548 8-Channel STEMMA QT / Qwiic I2C Multiplexer](https://learn.adafruit.com/adafruit-pca9548-8-channel-stemma-qt-qwiic-i2c-multiplexer.md) - [Adafruit Voice Bonnet](https://learn.adafruit.com/adafruit-voice-bonnet.md) - [ESP32-S3 BLE RS-232 Controller](https://learn.adafruit.com/esp32-s3-ble-rs232-controller.md) - [Adafruit TMP119 High-Precision Temperature Sensor](https://learn.adafruit.com/adafruit-tmp119-high-precision-temperature-sensor.md) - [Ladyada's Bento Box](https://learn.adafruit.com/lady-adas-bento-box.md)