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SOT Temperature Sensors with Period/Frequency Output

SOT23 Single Wire Digital Temperature Sensors

Product Details

Key Features

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface Freq. µ Temp.
Accuracy (±°C) 3
Parasite Pwr. No
Oper. Temp. (°C) -55 to +125
Package/Pins SOT23/6
Budgetary
Price (See Notes)
0.97
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Simplified Block Diagram

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Parameters

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface Freq. µ Temp.
Accuracy (±°C) 3
Parasite Pwr. No
Oper. Temp. (°C) -55 to +125
Package/Pins SOT23/6
Budgetary
Price (See Notes)
0.97

Key Features

  • 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/Uses

  • Battery Packs
  • Cell Phones
  • Critical µP and µC Temperature Monitoring
  • Hard Drives/Tape Drives
  • Medical Equipment
  • Networking and Telecom Equipment
  • Portable Battery-Powered Equipment

Description

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

Simplified Block Diagram

MAX6576, MAX6577: Typical Operating Circuit MAX6576, MAX6577: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .