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Low-Power I2C Temperature Sensor in WLP Package

The MAX31875 is a ±1°C-Accurate Local Temperature Sensor with I2C/SMBus Interface.

Product Details

The MAX31875 is a ±1°C-accurate local temperature sensor with I2C/SMBus interface. The combination of tinypackage and excellent temperature measurement accuracymakes this product ideal for a variety of equipment.

The I2C/SMBus-compatible serial interface accepts standard write byte, read byte, send byte, and receive byte commands to read the temperature data and configure the behavior of the sensor. Bus timeout resets the interface if the clock is low for more than 30ms (nominal). PEC helps to avoid communication errors when used with a master that supports this feature.

The MAX31875 is available in a 4-bump, wafer-level package (WLP) and operates over the -50°C to +150°C temperature range.

Design Solution: Cool Down with a Smaller, Lower Power Temperature Sensor ›

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Key Features

  • Tiny, 0.84mm x 0.84mm x 0.35mm WLP
  • Excellent Temperature Accuracy
    • ±1.75°C from -40°C to +145°C
    • ±1°C from -0°C to +70°C
  • <10µA Average Power Supply Current
  • Selectable Timeout Prevents Bus Lockup (Default Enabled)
  • I2C and SMBus Support
  • Selectable PEC for Reliable Communications
  • Up to 1MHz Bus Speed
  • +1.6V to +3.6V Power Supply Voltage

Applications/Uses

  • Battery-Powered Equipment
  • Data Communications Equipment
  • Handheld Electronics
  • Industrial Equipment
  • Servers
Parametric specs for All Temperature Sensors
Sensor Type Local
# Channels One
Interface 2-Wire/I2C/SMBus
Accuracy (±°C) 2
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -20 to +150
Package/Pins ULTRA THIN WLP/4
Budgetary
Price (See Notes)
$0.48 @1k
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Simplified Block Diagram

MAX31875: Simplified Block Diagram MAX31875: Simplified Block Diagram Zoom icon

Technical Docs

Design & Development

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Description

The MAX31875 evaluation kit (EV kit) demonstrates the MAX31875 ±2°C-accurate local temperature sensor with I2C/SMBus interface. The EV kit includes a graphical user interface (GUI) that provides communication over I2C with an on-board master IC.

The MAX31875 EV kit comes with the MAX31875ROTZS+ installed.

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Features

  • Windows® 7, Windows 8/8.1, and Windows 10 Compatible Software

/en/design/design-tools/ee-sim.html?

SIMULATION MODELS

MAX31875 IBIS Model

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Support & Training

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

Parameters

Parametric specs for All Temperature Sensors
Sensor Type Local
# Channels One
Interface 2-Wire/I2C/SMBus
Accuracy (±°C) 2
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -20 to +150
Package/Pins ULTRA THIN WLP/4
Budgetary
Price (See Notes)
$0.48 @1k

Key Features

  • Tiny, 0.84mm x 0.84mm x 0.35mm WLP
  • Excellent Temperature Accuracy
    • ±1.75°C from -40°C to +145°C
    • ±1°C from -0°C to +70°C
  • <10µA Average Power Supply Current
  • Selectable Timeout Prevents Bus Lockup (Default Enabled)
  • I2C and SMBus Support
  • Selectable PEC for Reliable Communications
  • Up to 1MHz Bus Speed
  • +1.6V to +3.6V Power Supply Voltage

Applications/Uses

  • Battery-Powered Equipment
  • Data Communications Equipment
  • Handheld Electronics
  • Industrial Equipment
  • Servers

Description

The MAX31875 is a ±1°C-accurate local temperature sensor with I2C/SMBus interface. The combination of tinypackage and excellent temperature measurement accuracymakes this product ideal for a variety of equipment.

The I2C/SMBus-compatible serial interface accepts standard write byte, read byte, send byte, and receive byte commands to read the temperature data and configure the behavior of the sensor. Bus timeout resets the interface if the clock is low for more than 30ms (nominal). PEC helps to avoid communication errors when used with a master that supports this feature.

The MAX31875 is available in a 4-bump, wafer-level package (WLP) and operates over the -50°C to +150°C temperature range.

Design Solution: Cool Down with a Smaller, Lower Power Temperature Sensor ›

Mobile App



Simplified Block Diagram

MAX31875: Simplified Block Diagram MAX31875: Simplified Block Diagram 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.