Microchip Technology Inc
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EMC1438

Status: In Production

Features:

  • triggers dedicated SYS_SHDN# pin
  • hardware configured range 65°C to 127°C in 1°C steps
  • cannot be disabled or modified by software
  • Designed to support advanced CPU diodes
  • Supports diodes requiring the BJT or transistor model
  • Resistance Error Correction (up to 100 Ohms)
  • ±1°C Accuracy (60°C < TDIODE < 100°C)
  • 0.125°C Resolution
  • Supports up to 2.2nF filter capacitor
  • Anti-parallel diodes for extra diode support and compact design
  • ±2°C accuracy
  • Report Hottest temperature of many
  • SMBus Block Read / Write
  • 3.3V Supply Voltage
  • Available in a 16 pin 4mm x 4mm QFN RoHs Compliant package
  • Programmable temperature limits for ALERT#
  • Notebook Computers
  • Desktop Computers
  • Industrial
  • Embedded applications
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The EMC1438 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta Compensation (to CPU diodes requiring the BJT or transistor model) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications.

Additionally, the EMC1438 provides a hardware programmable system shutdown feature that is programmed at part power-up via a single TRIP_SET voltage channel that cannot be masked or corrupted through the SMBus.

Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature. The EMC1428 monitors up to eight temperature channels (up to seven external and one internal).

Additional Features

    Features

    • Hardware Thermal Shutdown
      • triggers dedicated SYS_SHDN# pin
      • hardware configured range 65°C to 127°C in 1°C steps
      • cannot be disabled or modified by software
    • Designed to support advanced CPU diodes
    • Supports diodes requiring the BJT or transistor model
    • Resistance Error Correction (up to 100 Ohms)
    • Up to seven External Temperature Monitors
      • ±1°C Accuracy (60°C < TDIODE < 100°C)
      • 0.125°C Resolution
      • Supports up to 2.2nF filter capacitor
      • Anti-parallel diodes for extra diode support and compact design
    • Internal Temperature Monitor
      • ±2°C accuracy
    • Report Hottest temperature of many
    • SMBus Block Read / Write
    • 3.3V Supply Voltage
    • Available in a 16 pin 4mm x 4mm QFN RoHs Compliant package
    • Programmable temperature limits for ALERT#

    Applications

    • Notebook Computers
    • Desktop Computers
    • Industrial
    • Embedded applications
Parametrics
Name
Value
# Temps Monitored
8
Typical Accuracy (°)
0.25
Max. Accuracy @ 25° (°)
1
Max Input/ Supply Current (µA)
450
Temp. Range (°C)
-40 to +125
Operating Voltage Range (V)
+3.0 to +3.6
Typ Supply Current (µA)
450
Alert/THERM
1
Hardware Shutdown
1
Resistance Error Correction
Yes
Beta Compensation
Automatic
Device Description
Digital Temperature Sensor

Documents

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Data Sheet

05/16/2016
804KB

Silicon Product

05/18/2015
0B

White Papers

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
EMC2305 & EMC1438 Fan Ctrl and Temp Demo
EMC2305 & EMC1438 Fan Ctrl and Temp Demo ( ADM00879 )

The ADM00879 Fan Controller Demo Board provides an example of a 12V fan control application using the EMC2305 fan controller and EMC1438 temperature sensor. There are 5 fan channels, 2 on board temperature sensors and 6 remote temperature sensor inputs available.

The demo GUI has options to manually set up all the parameters for the thermal sensor and fan controller, as well as...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
EMC1438-1-AP-TR
0.041700
0.212121
16
QFN
4x4x0.9mm
Matte Tin
e3
EMC1438-2-AP-TR
0.041700
0.212121
16
QFN
4x4x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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