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LM748CN - Texas Instruments

Description: Operational Amplifiers - Op Amps

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LM748CN - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - Molded Dual-In-Line Package (N)
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LM748CN - Texas Instruments  - 3D model - Dual-In-Line Packages - Molded Dual-In-Line Package (N)
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LM748CN Details

  • Manufacturer Part Number:

    LM748CN

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    DIP-8

  • Pin Count:

    8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.33.00.01

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Amplifier Type:

    OPERATIONAL AMPLIFIER

  • Architecture:

    VOLTAGE-FEEDBACK

  • Average Bias Current-Max (IIB):

    0.8 µA

  • Bias Current-Max (IIB) @25C:

    0.5 µA

  • Common-mode Reject Ratio-Min:

    70 dB

  • Common-mode Reject Ratio-Nom:

    90 dB

  • Frequency Compensation:

    NO

  • Input Offset Voltage-Max:

    6000 µV

  • JESD-30 Code:

    R-PDIP-T8

  • Length:

    9.817 mm

  • Low-Bias:

    NO

  • Low-Offset:

    NO

  • Micropower:

    NO

  • Neg Supply Voltage Limit-Max:

    -22 V

  • Neg Supply Voltage-Nom (Vsup):

    -15 V

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Power:

    NO

  • Programmable Power:

    NO

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max:

    2.8 mA

  • Supply Voltage Limit-Max:

    22 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

LM748CN Frequently Asked Questions (FAQs)

  • The maximum power dissipation of the LM748CN is 670mW, which is calculated based on the maximum junction temperature (Tj) of 150°C and the thermal resistance (RθJA) of 125°C/W.
  • While the LM748CN can be used as a comparator, it's not the best choice due to its relatively slow slew rate (0.5V/μs) and limited bandwidth (1MHz). A dedicated comparator like the LM339 or LM2901 would be a better option.
  • To ensure stability, make sure to use a compensation capacitor (e.g., 10nF to 100nF) between the output and the inverting input. This helps to reduce oscillations and improve phase margin.
  • The input impedance of the LM748CN is typically around 2MΩ, which is relatively high. This makes it suitable for use with high-impedance sources or in applications where input impedance is critical.
  • Yes, the LM748CN can be used in a single-supply configuration, but you'll need to ensure that the input common-mode voltage is within the specified range (VCC-1.5V to VCC-0.5V). You may also need to add a voltage divider or level shifter to adjust the input voltage.

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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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