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 _______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxims website at www.maxim-ic.com.
Digital Thermometers and Thermostats
with SPI/3-Wire Interface
19-5629; Rev 0; 11/10
  General Description
The MAX31722/MAX31723 digital thermometers and
thermostats with an SPI"/3-wire interface provide tem-
perature readings that indicate the device temperature.
No additional components are required; the devices
are truly temperature-to-digital converters. Temperature
readings are communicated from the device over an
SPI interface or a 3-wire serial interface. The choice of
interface is selectable by the user. For applications that
require greater temperature resolution, the user can
adjust the readout resolution from 9 to 12 bits. This is
particularly useful in applications where thermal runaway
conditions must be detected quickly. The thermostat has
a dedicated open-drain output (TOUT). Two thermostat
operating modes, comparator and interrupt, control ther-
mostat operation based on user-defined nonvolatile trip
points (T
HIGH
 and T
LOW
). Both devices feature a 1.7V to
3.7V supply rail.
  Applications
Networking Equipment
Cellular Base Stations
Industrial Equipment
Any Thermally Sensitive Systems
  Features
S Temperature Measurements Require No External 
Components
S Measures Temperatures from -55NC to +125NC
S MAX31722 Thermometer Accuracy is ?/SPAN>2.0NC
S MAX31723 Thermometer Accuracy is ?/SPAN>0.5NC
S Thermometer Resolution is Configurable from 9 
to 12 Bits (0.5NC to 0.0625NC Resolution)
S Thermostat Output with User-Defined Nonvolatile 
Thresholds
S Data is Read from/Written to by SPI (Mode 0 and 2) 
or 3-Wire Serial Interface
S 1.7V to 3.7V Power-Supply Range
S Available in 8-Pin ?/SPAN>MAX
?/DIV>
 Package
  Ordering Information
SPI is a trademark of Motorola, Inc.
礛AX is a registered trademark of Maxim Integrated Products, Inc.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
  Functional Diagram
MAX31722
MAX31723
OVERSAMPLING
MODULATOR
CONFIGURATION/
STATUS REGISTER
PRECISION
REFERENCE
I/O CONTROL
AND
INPUT SENSE
DIGITAL
DECIMATOR
SDI
V
DD
V
DD
SCLK
SDO
SERMODE
GND
TOUT
CE
TEMPERATURE
REGISTER
T
HIGH
 AND T
LOW
REGISTERS
THERMOSTAT
COMPARATOR
PART
TEMP RANGE
PIN-PACKAGE
MAX31722MUA+
-55NC to +125NC    8 FMAX
MAX31722MUA+T
-55NC to +125NC    8 FMAX
MAX31723MUA+
-55NC to +125NC    8 FMAX
MAX31723MUA+T
-55NC to +125NC    8 FMAX
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相关代理商/技术参数
MAX31723MUA+T 功能描述:板上安装温度传感器 SPI/3-Wire Digital Temp Sensor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
MAX31723PMB1# 功能描述:温度传感器开发工具 MAX31723 Peripheral Module RoHS:否 制造商:Texas Instruments 产品类型:Temperature Sensors and Control ICs 工具用于评估:MSP430G2553 接口类型:USB 工作电源电压: 工作电源电流:
MAX31725MTA+ 功能描述:板上安装温度传感器 .5+- DEG C I2C RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
MAX31725MTA+T 功能描述:板上安装温度传感器 .5+- DEG C I2C RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
MAX31726MTA+ 制造商:Maxim Integrated Products 功能描述:+/-0.5C I2C TEMP W/RESET - Rail/Tube
MAX31726MTA+T 制造商:Maxim Integrated Products 功能描述:+/-0.5C I2C TEMP W/RESET - Tape and Reel
MAX3172CAI 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX3172CAI+ 功能描述:接口 - 专用 3.3V 3Tx/3Rx Tcvr Multiprotocol RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59