The TMP03/TMP04 are low cost, 3-lead temperature detectors that generate a modulated serial digital output proportional to temperature.
The TMP03 and TMP04 are monolithic temperature detectors that output a modulated serial digital signal proportional to temperature. They are offered in low‑cost 3‑pin TO‑92, SO‑8, and TSSOP‑8 packages and operate from 4.5 V to 7 V. The TMP03 features an open‑collector output suitable for isolated circuits, while the TMP04 provides a CMOS/TTL‑compatible output.
Typical applications include environmental control systems, computer thermal monitoring, industrial process control, and power‑system monitoring. The datasheet details accuracy, supply current, power‑supply rejection, self‑heating effects, and recommended calibration procedures.
| Typical Accuracy | +1.5 °C (typ) from -25 °C to +100 °C |
|---|---|
| Supply Voltage Range | 4.5 V to 7 V |
| Power Consumption (max at 5 V) | 6.5 mW |
| Supply Current (unloaded) | 0.9 mA typical, 1.3 mA max |
| Output Low Voltage (TMP04, 5 mA sink) | 0.2 V |
| Temperature Linearity | 0.5 °C |
The TMP04 provides a typical accuracy of ±1.5 °C over the -25 °C to +100 °C range.
The TMP03 operates from a supply voltage of 4.5 V to 7 V.
It consumes up to 6.5 mW when powered at 5 V.