MAX31725 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – ±0.5°C Local Temperature Sensor

MAX31725
±0.5°C Local Temperature Sensor
General Description
The MAX31725 temperature sensor accurately measures
temperature and provides an overtemperature alarm/
interrupt/shutdown output. The device converts the
temperature measurements to digital form using a
high-resolution, sigma-delta, analog-to-digital converter
(ADC). Accuracy is Q0.5NC from -40NC to +105NC.
Communication is through an I²C-compatible 2-wire
serial interface.
The I²C 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
open-drain overtemperature shutdown output.
The MAX31725 features three address select lines with a
total of 32 available addresses. The 2.5V to 3.7V supply
voltage range, low 600FA supply current, and a lockup-
protected I²C-compatible interface make the sensor
ideal for a wide range of applications, including PCs,
electronic test equipment, and office electronics.
The MAX31725 is available in an 8-pin TDFN package
and operates over the -55NC to +150NC temperature
range.
Applications
Servers
Networking
Telecom
Industrial
Benefits and Features
S ±0.5NC Accuracy from -40NC to +105NC
S 16-Bit (0.00390625NC) Temperature Resolution
S Selectable Timeout Prevents Bus Lockup (Default
Enabled)
S 2.5V to 3.7V Supply Voltage Range
S 925µA (max) Operating Supply Current
S Separate Open-Drain OS Output Operates as
Interrupt or Comparator/Thermostat Output
Typical Application Circuit
4.7kΩ
TO I²C
MASTER
+2.5V TO +3.7V
SDA
VDD
SCL ^MAX31725 A0
OS
A1
GND
A2
0.1µF
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX31725.related
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6477; Rev 0; 9/12