Microchip Technology Inc

EMC1438

In Production

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).

 

    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
    Parameter 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
    Documentation
    Data Sheets
    05/16/2016
    804KB
      Application Notes
     
     
     
    AppNote
    11/17/2014
    250KB
    AppNote
    11/17/2014
    293KB
    AppNote
    11/09/2014
    161KB
    AppNote
    11/09/2014
    294KB
    AppNote
    10/16/2014
    205KB
      aspxDeviceInfo
     
     
     
     
    DeviceInfo
    05/18/2015
    0B
      Schematics
     
     
     
    Schematics
    02/17/2009
    6KB
    Schematics
    02/09/2009
    25KB
      White Papers
     
     
     
     
    WhitePapers
    08/11/2005
    174KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    EMC1438-1-AP-TR
    16
    QFN
    -40C to +125C
    T/R
    1.32
    1.10
    1.00
    0.97
    0.96
     
    EMC1438-2-AP-TR
    16
    QFN
    -40C to +125C
    T/R
    1.32
    1.10
    1.00
    0.97
    0.96
     

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    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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