MAX6603 is a platinum RTD to voltage signal conditioner produced by Texas Instruments. This device has dual channels, high voltage, and smooth signal characteristics. It can be used for temperature measurement.
The MAX6603 dual‑channel, platinum RTD‑to‑voltage signal conditioner excites and amplifies signals from two external 200 Ω platinum RTDs, delivering ratiometric analog voltages suitable for direct connection to microcontroller ADCs. It operates from a single 3 V to 5.5 V supply, offers +5 kV ESD protection, +16 V input over‑voltage protection, and diagnostic fault outputs.
Typical applications include automotive exhaust temperature monitoring, engine control, braking systems, industrial temperature sensing, and food transportation monitoring. The device is supplied in a 10‑pin TDFN‑EP package and requires no external calibration for standard RTDs.
| Supply Voltage Range | 3.0 V to 5.5 V |
|---|---|
| ESD Protection (RTD inputs) | +5 kV |
| Operating Temperature Range (RTD) | -40 °C to +1000 °C |
| Accuracy (400 °C‑600 °C) | +6 °C (max) |
| Package | 10‑pin TDFN‑EP |
| Excitation Current | 1 mA (typ) |
The MAX6603 provides dual‑channel operation, handling two RTD inputs.
It detects RTD open or short circuits and short‑to‑ground or short‑to‑supply conditions on the RS pins, asserting the corresponding DG output low.
No external calibration is required for standard RTDs; the device operates fully ratiometrically.
The typical excitation current is 1 mA.