MAX1617

PRODUCTION

Remote/Local Temperature Sensor with SMBus Serial Interface

Recommend MAX1617A For New Designs

Data Sheet (Rev. 3) Product Selection Table
Viewing:

Overview

  • Two Channels: Measures Both Remote and Local Temperatures
  • No Calibration Required
  • SMBus 2-Wire Serial Interface
  • Programmable Under/Overtemperature Alarms
  • Supports SMBus Alert Response
  • Accuracy:
    • ±2°C (+60°C to +100°C, local)
    • ±3°C (-40°C to +125°C, local)
    • ±3°C (+60°C to +100°C, remote)
  • 3µA (typ) Standby Supply Current
  • 70µA (max) Supply Current in Auto-Convert Mode
  • +3V to +5.5V Supply Range
  • Small, 16-Pin QSOP Package

The MAX1617 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

The 2-wire serial interface accepts standard System Management Bus (SMBus) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 7 bits plus sign, with each bit corresponding to 1°C, in two's complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply-current drain.

The MAX1617 is available in a small, 16-pin QSOP surface-mount package.

Applications

  • Central Office Telecom Equipment
  • Computers: Desktop, Workstation, Server
  • Industrial Controls
  • LAN Servers
  • Multichip Modules
  • Smart Battery Packs/Chargers
  • Test and Measurement Equipment
MAX1617
Remote/Local Temperature Sensor with SMBus Serial Interface
MAX1617: Typical Operating Circuit
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Design Note 3

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Analog to Digital Converters (ADCs) 2
MAX1617A
PRODUCTION Remote/Local Temperature Sensor with SMBus Serial Interface
MAX1619
PRODUCTION Remote/Local Temperature Sensor with Dual Alarm Outputs and SMBus Serial Interface
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

MAX1617EVKIT

MAX1617 Temperature Sensor Evaluation Kit

Buy Now View Details

Features and Benefits

  • Measures and Displays Sensor Temperature
  • Simultaneously Monitors Package and a Remote Sensor
  • Programs Alarms, Configuration, and Rate
  • Operating Temperature Ranges:
    • -55°C to +125°C (remote sensor)
    • 0°C to +70°C (board)
  • Easy to Use
  • Includes:
    • Windows 3.1/95 Software
    • Demo PC Board
    • 3.5 in. Floppy Disk

Product Details

The MAX1617 evaluation kit (EV kit) is a demonstration platform for the MAX1617 temperature-sensor IC. It monitors both the junction temperature of the IC and the temperature of a remote (external) diode-connected transistor, and converts these temperatures to 8-bit, 2-wire serial data. A 2N3904 remote temperature-sensor transistor comes soldered to the board in a SOT23 package, but for more realistic experiments, it can easily be removed and connected via a twisted pair to the DXP and DXN terminals.

The EV kit is designed to be connected to a standard IBM®-compatible PC parallel printer port. Signals from the parallel port are converted to open-drain SMBus™ clock and data by a 74HC05 logic chip on the board. An on-board MAX883 linear regulator with reverse voltage protection steps down the unregulated DC input to 5V to power the glue logic, the MAX1617, and the SMBus pull-up resistors.

The software runs under Windows® 3.1 or 95. This user-friendly program is menu-driven and offers a graphic user interface with control buttons and numeric data displays.

Applications

  • Central Office Telecom Equipment
  • Computers: Desktop, Workstation, Server
  • Industrial Controls
  • LAN Servers
  • Multichip Modules
  • Smart Battery Packs/Chargers
  • Test and Measurement Equipment
MAX1617EVKIT
MAX1617 Temperature Sensor Evaluation Kit

Latest Discussions

No discussions on MAX1617 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed