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LF347N - STMicroelectronics

Description: WIDE BANDWIDTH QUAD J-FET OPERATIONAL AMPLIFIERS DIP14 , 4 MHz , 680mW , -40°C to +105°C

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LF347N - STMicroelectronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - DIP14_2025-1.2
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LF347N - STMicroelectronics  - 3D model - Dual-In-Line Packages - DIP14_2025-1.2
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LF347N Details

  • Manufacturer Part Number:

    LF347N

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    PLASTIC, DIP-14

  • Pin Count:

    14

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.33.00.01

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Amplifier Type:

    OPERATIONAL AMPLIFIER

  • Architecture:

    VOLTAGE-FEEDBACK

  • Average Bias Current-Max (IIB):

    0.02 µA

  • Bias Current-Max (IIB) @25C:

    0.0002 µA

  • Common-mode Reject Ratio-Min:

    70 dB

  • Common-mode Reject Ratio-Nom:

    86 dB

  • Frequency Compensation:

    YES

  • Input Offset Current-Max (IIO):

    0.004 µA

  • Input Offset Voltage-Max:

    13000 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:

    14

  • Number of Terminals:

    4

  • 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

  • Power:

    NO

  • Programmable Power:

    NO

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.1 mm

  • Slew Rate-Min:

    12 V/us

  • Slew Rate-Nom:

    16 V/us

  • Supply Current-Max:

    10.8 mA

  • Supply Voltage Limit-Max:

    18 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    NICKEL PALLADIUM GOLD

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Unity Gain BW-Nom:

    4000

  • Voltage Gain-Min:

    25000

  • Wideband:

    NO

  • Width:

    7.1 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 (125°C/W) of the package.
  • To ensure stability, add a 10-22nF capacitor between the output and the inverting input, and a 1kΩ-2kΩ resistor in series with the capacitor to prevent oscillations.
  • Use a star-grounding technique, where the grounds of the power supplies, analog, and digital circuits are connected at a single point. Keep the LF347N close to the power supply decoupling capacitors, and use a ground plane to minimize inductance and noise.
  • Yes, the LF347N can be used as a comparator, but it's not recommended due to its limited slew rate (0.5V/μs) and bandwidth (4MHz). For comparator applications, consider using a dedicated comparator IC like the LM339 or LM393.
  • Choose resistor values that provide a gain-bandwidth product that is within the LF347N's capabilities. A good starting point is to use a ratio of Rf/Ri = 1-10, and then adjust based on the desired gain and bandwidth requirements.

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LF347N Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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