Analog Output K-Type Thermocouple Amplifier - AD8495 Breakout
AD8495 K-type thermocouple amplifier breakout with a 1.25 V precision reference; converts thermocouple voltage to an analogue output readable by any ADC using T = (Vout − 1.25) / 0.005 °C. Accepts 3–18 V supply.
Pinout
- VIN
Board power input. Adafruit Learn pinouts page states the board works with 3.3V and 5V power; overview states power the board with 3-18VDC. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
Type · PowerVoltage · 3-18VDC supply; 3.3V/5V normal logic examples - GND
Common ground pins. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
Type · GroundVoltage · 0V - OUT
Analog output voltage pin. Adafruit Learn says read using an analog input; temperature = (Vout - 1.25) / 0.005 V. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
Type · AnalogVoltage · 0-5VDC with 5V power, 0-3.3VDC with 3.3V power per Adafruit Learn - T-
Thermocouple terminal negative side. Adafruit Learn says connect the red or - wire on the K-type thermocouple to this side of the screw terminal. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
Type · SignalVoltage · K-type thermocouple millivolt input, not a powered supply - T+
Thermocouple terminal positive side. Adafruit Learn says connect the yellow or + wire on the K-type thermocouple to this side of the screw terminal. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
Type · SignalVoltage · K-type thermocouple millivolt input, not a powered supply
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VIN | Power | Board power input. Adafruit Learn pinouts page states the board works with 3.3V and 5V power; overview states power the board with 3-18VDC. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts | 3-18VDC supply; 3.3V/5V normal logic examples |
| GND | Ground | Common ground pins. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts | 0V |
| OUT | Analog | Analog output voltage pin. Adafruit Learn says read using an analog input; temperature = (Vout - 1.25) / 0.005 V. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts | 0-5VDC with 5V power, 0-3.3VDC with 3.3V power per Adafruit Learn |
| T- | Signal | Thermocouple terminal negative side. Adafruit Learn says connect the red or - wire on the K-type thermocouple to this side of the screw terminal. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts | K-type thermocouple millivolt input, not a powered supply |
| T+ | Signal | Thermocouple terminal positive side. Adafruit Learn says connect the yellow or + wire on the K-type thermocouple to this side of the screw terminal. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts | K-type thermocouple millivolt input, not a powered supply |
Pin details
5 connections- VIN
Board power input. Adafruit Learn pinouts page states the board works with 3.3V and 5V power; overview states power the board with 3-18VDC. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
PowerVoltage · 3-18VDC supply; 3.3V/5V normal logic examples - GND
Common ground pins. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
GroundVoltage · 0V - OUT
Analog output voltage pin. Adafruit Learn says read using an analog input; temperature = (Vout - 1.25) / 0.005 V. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
AnalogVoltage · 0-5VDC with 5V power, 0-3.3VDC with 3.3V power per Adafruit Learn - T-
Thermocouple terminal negative side. Adafruit Learn says connect the red or - wire on the K-type thermocouple to this side of the screw terminal. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
SignalVoltage · K-type thermocouple millivolt input, not a powered supply - T+
Thermocouple terminal positive side. Adafruit Learn says connect the yellow or + wire on the K-type thermocouple to this side of the screw terminal. Source: https://learn.adafruit.com/ad8495-thermocouple-amplifier/pinouts
SignalVoltage · K-type thermocouple millivolt input, not a powered supply
Start wiring
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: VIN, GND, OUT, T-, T+. Schematik maps them to your board in the app.
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