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AD8494ARMZ-R7 - Analog Devices

Description: Precision Thermocouple Amplifiers with Cold Junction Compensation

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AD8494ARMZ-R7 - Analog Devices - PCB symbol
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AD8494ARMZ-R7 - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - (RM-8)
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AD8494ARMZ-R7 - Analog Devices - 3D model - Small Outline Packages - (RM-8)
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AD8494ARMZ-R7 Details

  • Manufacturer Part Number:

    AD8494ARMZ-R7

  • Source Url Status Check Date:

    2013-05-01 14:56:27.531

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    TSSOP

  • Package Description:

    MSOP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    RM-8

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.33.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Amplifier Type:

    OPERATIONAL AMPLIFIER

  • Average Bias Current-Max (IIB):

    0.05 µA

  • Bias Current-Max (IIB) @25C:

    0.05 µA

  • Frequency Compensation:

    NO

  • JESD-30 Code:

    S-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Low-Bias:

    YES

  • Low-Offset:

    YES

  • Micropower:

    YES

  • 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:

    TSSOP

  • Package Equivalence Code:

    TSSOP8,.19

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Packing Method:

    TR, 7 INCH

  • Peak Reflow Temperature (Cel):

    260

  • Power:

    YES

  • Programmable Power:

    YES

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.1 mm

  • Supply Current-Max:

    0.25 mA

  • Supply Voltage Limit-Max:

    18 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

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

    30

  • Wideband:

    NO

  • Width:

    3 mm

AD8494ARMZ-R7 Frequently Asked Questions (FAQs)

  • A good PCB layout for the AD8494ARMZ-R7 should include a solid ground plane, a separate analog ground plane, and a thermal relief pattern around the device to facilitate heat dissipation. Additionally, keeping the input and output traces short and away from noise sources is crucial.
  • To ensure accurate temperature measurement, it's essential to calibrate the device, use a high-precision voltage reference, and minimize thermal gradients on the PCB. Also, consider using a thermocouple with a high-temperature rating and a low-thermal-mass design.
  • The recommended power-up sequence for the AD8494ARMZ-R7 is to apply the analog supply voltage (VCC) first, followed by the digital supply voltage (VDD). This ensures that the analog circuitry is powered up before the digital circuitry, preventing any potential latch-up conditions.
  • To minimize EMI and RFI interference, use a shielded enclosure, keep the device away from noise sources, and use a low-pass filter on the input signals. Additionally, consider using a common-mode choke or a ferrite bead on the power supply lines to reduce electromagnetic radiation.
  • The maximum cable length for the thermocouple input of the AD8494ARMZ-R7 depends on the specific application and the type of thermocouple used. As a general guideline, keep the cable length as short as possible (less than 10 feet) to minimize noise pickup and signal degradation.

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AD8494ARMZ-R7 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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