Product details


Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.7 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 GBW (Typ) (MHz) 13 Slew rate (Typ) (V/us) 5 Rail-to-rail In, Out Vos (offset voltage @ 25 C) (Max) (mV) 1.25 Iq per channel (Typ) (mA) 0.94 Vn at 1 kHz (Typ) (nV/rtHz) 7 THD + N @ 1 kHz (Typ) (%) 0.00035 Rating Catalog Operating temperature range (C) -40 to 125 Output current (Typ) (mA) 66 Architecture CMOS CMRR (Typ) (dB) 102 open-in-new Find other Audio op amps

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other Audio op amps


  • Low noise:
    4 nV/√Hz at 10 kHz
    4.7 fA/√Hz at 1 kHz
  • Low distortion: –109 dB (0.00035%)
  • Wide gain bandwidth: 13 MHz
  • Rail-to-rail input and output
  • Low supply-voltage operation: 1.7 V to 5.5 V
  • Low input capacitance
    • Differential: 6 pF
    • Common-mode: 2.5 pF
  • Low input-bias current: 10 pA
  • Low power supply current: 940 µA
  • Industry-standard packages: SC-70 and SOT-23

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    The OPA1671 is a wide-bandwidth, low-noise, low-distortion, audio operational amplifier that provides rail-to-rail input and output operation. This device offers an excellent combination of low voltage noise, current noise, and input capacitance, allowing the device to deliver high performance in a wide array of audio and industrial applications. The unique internal topology of the OPA1671 delivers very low distortion (–109 dB), while only consuming 940 µA of power supply current. The wide bandwidth (13 MHz) and high slew rate (5 V/µs) of OPA1671 makes this device an excellent choice for high gain audio and industrial signal conditioning.

    The OPA1671 is available in the SC-70 and SOT-23 packages and is specified over the industrial temperature range (–40°C to +125°C).



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    Technical documentation

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    Type Title Date
    * Data sheet OPA1671 13-MHz, Low-Noise, Rail-to-Rail, Audio Operational Amplifier datasheet (Rev. B) Jul. 14, 2019
    Technical article No headroom, no problem: buffering and filtering an audio signal chain in low-voltage systems Apr. 11, 2019
    Application note Transimpedance amplifier circuit. (Rev. A) Feb. 01, 2019
    Application note Phantom Power with Operational Amplifiers (Rev. A) Nov. 09, 2018
    Technical article Amp up your cans: Is your op amp stable? (Part 2) Jan. 22, 2016
    Technical article Stress-induced outbursts: Microphonics in ceramic capacitors (Part 2) Dec. 23, 2014
    Technical article Stress-induced outbursts: Microphonics in ceramic capacitors (Part 1) Dec. 19, 2014
    Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) Mar. 30, 2005

    Design & development

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    Design tools & simulation

    SBOMAR9A.TSC (312 KB) - TINA-TI Reference Design
    SBOMAS0A.ZIP (8 KB) - TINA-TI Spice Model
    SBOMAS1A.ZIP (25 KB) - PSpice Model
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    SPICE-based analog simulation program
    TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
    document-generic User guide
    Analog engineer's calculator
    ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
    • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
      • Noise calculations
      • Common unit translation
    • Solves common amplifier circuit design problems
      • Gain selections using standard resistors
      • Filter configurations
      • Total noise for common amplifier configurations
    • (...)

    CAD/CAE symbols

    Package Pins Download
    SC70 (DCK) 5 View options
    SOT-23 (DBV) 5 View options

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