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MAX31855TASA+ - Analog Devices

Description: Sensor Interface Thermocouple To Digital Converter

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MAX31855TASA+ Details

  • Manufacturer Part Number:

    MAX31855TASA+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8-SOIC_N-150_MIL

  • Package Description:

    ROHS COMPLIANT, SOP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    8-SOIC_N-150_MIL

  • Country Of Origin:

    Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA

  • HTS Code:

    8542.39.00.01

  • Date Of Intro:

    2011-04-05

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog IC - Other Type:

    ANALOG CIRCUIT

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    1.5 mA

  • Supply Voltage-Max (Vsup):

    3.6 V

  • Supply Voltage-Min (Vsup):

    3 V

  • Supply Voltage-Nom (Vsup):

    3.3 V

  • Surface Mount:

    YES

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    3.9 mm

MAX31855TASA+ Frequently Asked Questions (FAQs)

  • A good PCB layout for the MAX31855TASA+ involves keeping the thermocouple traces as short as possible, using a dedicated ground plane, and minimizing noise coupling from other components. A 4-layer PCB with a dedicated thermal zone is recommended. Refer to the application note AN1549 for more details.
  • Calibration involves trimming the internal offset and gain of the device. This can be done using the CALMODE pin and the CALREG register. Refer to the datasheet section 7.3 for the calibration procedure. It's recommended to calibrate the device in a temperature-controlled environment.
  • The MAX31855TASA+ can measure temperatures from -200°C to +1350°C, depending on the type of thermocouple used. However, the device itself has an operating temperature range of -40°C to +150°C.
  • The MAX31855TASA+ has an internal cold-junction compensation (CJC) circuit that can be enabled or disabled. When enabled, the device uses an internal thermistor to measure the cold-junction temperature. The CJC circuit can be calibrated using the CJCTRM register.
  • The recommended power-up sequence is to apply VCC first, followed by the thermocouple connections, and then the digital interface connections. This ensures that the device powers up correctly and avoids any potential damage.

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MAX31855TASA+ Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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