ADT7422CCPZ-RL7

ADT7422 is a high accuracy, digital I²C temperature sensor designed to meet the clinical thermometry specification of the ASTM E1112 standards when soldered onto the final printed circuit board (PCB). It contains an internal band gap reference, a temperature sensor, and a precision analogue-to-digital converter. The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. Application includes vital signs monitoring, medical equipment, resistance temperature detector and thermistor replacement, food transportation and storage, thermocouple cold junction compensation, environmental monitoring and heating, ventilation, and air conditioning, laser diode temperature control.

• Accuracy meets clinical thermometry specification of the ASTM E1112 when soldered onto the final PCB
• 0.0073°C typical drift (TA = -40°C to +125°C, VDD = 2.7V to 3.3V)
• National institute of standards and technology (NIST) traceable or equivalent
• 6ms typical fast temperature conversion time (first conversion on power-up only)
• Simple implementation, no temperature calibration or correction required
• No linearity correction required, low power
• Programmable interrupts, critical overtemperature interrupt
• Overtemperature and under temperature interrupt, I²C-compatible interface
• 0.1°C/V typical DC power supply rejection ratio (TA = 25°C, VDD = 2.7V to 3.3V)
• 16 lead LFCSP package, operating temperature range from -40°C to +125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party