The MAX6576/MAX6577ZUT are low-cost, low-current temperature sensors with a single-wire output. The MAX6576 converts the ambient temperature into a square wave with a period proportional to absolute temperature (°K). The MAX6577ZUT converts the ambient temperature into a square wave with a frequency proportional to absolute temperature. The MAX6576 offers accuracy of ±3°C at +25°C, ±4.5°C at +85°C, and ±5°C at +125°C. The MAX6577ZUT offers accuracy of ±3°C at +25°C, ±3.5°C at +85°C, and ±4.5°C at +125°C. Both devices feature a single-wire output that minimizes the number of pins necessary to interface with a microprocessor. The period/frequency range of the output square wave can be selected by hard-wiring the two time-select pins (TS0, TS1) to either VDD or GND. The MAX6576/MAX6577ZUT are available in space-saving 6-pin SOT23 packages.
Feature
- Simple Single-Wire Output
- Two Output Types Available
- Temperature to Period (μs) (MAX6576)
- Temperature to Frequency (Hz) (MAX6577)
- ±0.8°C Accuracy at +25°C (±3°C max)
- No External Components
- Operates from +2.7V to +5.5V Supply Voltage
- Low 140μA Typical Supply Current
- Standard Operating Temperature Range: -40°C to +125°C
- Small 6-Pin SOT23 Package
Applications
- Battery Packs
- Cell Phones
- Critical μP and μC Temperature Monitoring
- Hard Drives/Tape Drives
- Medical Equipment
- Networking and Telecom Equipment
- Portable Battery-Powered Equipment
