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LF347N - Texas Instruments

Description: Quad General-Purpose JFET-input Operational Amplifier

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LF347N - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - NFF0014A
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LF347N - Texas Instruments  - 3D model - Dual-In-Line Packages - NFF0014A
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LF347N Details

  • Manufacturer Part Number:

    LF347N

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    14

  • Country Of Origin:

    Malaysia, Mexico, Taiwan

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.33.00.01

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Amplifier Type:

    OPERATIONAL AMPLIFIER

  • Architecture:

    VOLTAGE-FEEDBACK

  • Average Bias Current-Max (IIB):

    0.0002 µA

  • Bias Current-Max (IIB) @25C:

    0.0002 µA

  • Common-mode Reject Ratio-Min:

    70 dB

  • Common-mode Reject Ratio-Nom:

    100 dB

  • Frequency Compensation:

    YES

  • Input Offset Current-Max (IIO):

    0.004 µA

  • Input Offset Voltage-Max:

    10000 µV

  • JESD-30 Code:

    R-PDIP-T14

  • JESD-609 Code:

    e4

  • Length:

    19.305 mm

  • Low-Bias:

    YES

  • Low-Offset:

    NO

  • Micropower:

    NO

  • Neg Supply Voltage Limit-Max:

    -18 V

  • Neg Supply Voltage-Nom (Vsup):

    -15 V

  • Number of Functions:

    4

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    70 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP14,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    TUBE

  • Power:

    NO

  • Programmable Power:

    NO

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Slew Rate-Min:

    8 V/us

  • Slew Rate-Nom:

    13 V/us

  • Subcategory:

    Operational Amplifier

  • Supply Current-Max:

    11 mA

  • Supply Voltage Limit-Max:

    18 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    NO

  • Technology:

    JFET

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Unity Gain BW-Nom:

    3000

  • Voltage Gain-Min:

    15000

  • Wideband:

    NO

  • Width:

    7.62 mm

LF347N Frequently Asked Questions (FAQs)

  • The maximum power dissipation of the LF347N is 670mW, which is calculated based on the maximum junction temperature (150°C) and the thermal resistance (θJA) of the package.
  • To ensure stability in a unity-gain buffer configuration, it's recommended to add a capacitor (typically 10-100pF) between the output and the inverting input to compensate for the op-amp's internal capacitance and prevent oscillations.
  • To minimize noise and EMI, it's recommended to keep the input and output traces short and away from each other, use a ground plane, and decouple the power supply with a 0.1uF capacitor. Additionally, avoid routing high-frequency signals near the op-amp's inputs.
  • While the LF347N can be used as a comparator, it's not the most suitable op-amp for this application due to its relatively slow slew rate (13V/us) and limited output current (40mA). A dedicated comparator like the LM339 or LM2901 would be a better choice.
  • To protect the LF347N from overvoltage and ESD damage, it's recommended to use voltage clamps or transient voltage suppressors (TVS) on the input and output pins, and follow proper ESD handling and storage procedures.

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LF347N Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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