AD594 to a 597 basic application circuit


Posted on Mar 28, 2007

AD594/595 and the relationship between the output temperature is: AD594: Vo (Voj + 16pLV) x193.4 (mV) Where: voJ J-type thermocouple output voltage. AD595: Vo (VOK + llIr, V) x


AD594 to a 597 basic application circuit
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247.3 (mV) Where: vol (for the K-type thermocouple output voltage. AD596/597 and the relationship between the output temperature is: AD596: Vo (VoJ + 301.5yV ) x180.57 (mV) where: voJ J-type thermocouple output voltage. AD597: Vo VOK x245.46 (mV) where: VOK a K-type thermocouple output voltage. adjust the input and output pin HYS hysteresis. AD594 ~ 597 basic application circuit is shown. when the AD594/595 circuit, the thermocouple is connected directly to the lC, single + 5v power supply, can easily obtain vo rxlOmV/C (r thermoelectric the measured temperature) even the sense of output, temperature range of O ~ + 300qC; in AD596/597 basic application circuit, increasing the hysteresis regulatory elements R1- ink, RPi and temperature alarm indicator LED, RPi can adjust the output back to the voltage difference, feet for each additional 200 nA current, output will increase the temperature of 1 hysteresis output voltage vo rx lOmV gate C (r thermocouple temperature), temperature range of O-300C, accuracy is t0.020C (+25 a + lOOoC).




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