Analog Devices MAX6577 Product Info

• 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

The MAX6576/MAX6577 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 MAX6577 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 MAX6577 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 V_DD or GND. The MAX6576/MAX6577 are available in space-saving 6-pin SOT23 packages.

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