This datasheet provides detailed information about A2TPMI, including features and applications.
The A2TPMI is a versatile infrared thermopile sensor that integrates a configurable ASIC for signal processing and ambient temperature compensation. It provides a compact TO‑39 package with a digital serial interface (SCLK, SDAT) for calibration and configuration, making it suitable for remote temperature measurement, alarm switching, and climate control in appliances, automotive, and industrial equipment.
Key specifications include a supply voltage of 4.5 V–5.5 V, operating temperature range of –25 °C to 100 °C, and selectable optical configurations (standard, high‑cap, low‑cap, lens caps) offering fields of view from 5° to 70°. The device offers both ambient‑compensated and non‑compensated output voltages, programmable comparators, and a reference voltage of 1.225 V.
| Supply Voltage (typical) | 4.5 V – 5.5 V |
|---|---|
| Operating Temperature Range | -25 °C to 100 °C |
| Reference Voltage | 1.225 V |
| Low‑level Output Voltage | 0.5 V |
| Standard Cap Field of View | 60° – 70° |
| High‑cap (with internal reflector) Field of View | 15° – 20° |
| Standard Optical Filter Wavelength Range | 7.5 µm – 13.5 µm |
| Serial Interface | SCLK, SDAT |
The sensor operates with a typical supply voltage between 4.5 V and 5.5 V.
It can measure object temperatures from about –20 °C up to +100 °C (higher ranges are available in special configurations).
Configuration and calibration are performed via a digital serial interface using the SCLK and SDAT pins.