OPA1671

ACTIVE

Single supply, wide bandwidth (13MHz), low noise (7nV/RtHz), RRIO audio op amp

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 GBW (typ) (MHz) 13 Slew rate (typ) (V/µs) 5 Rail-to-rail In, Out Vos (offset voltage at 25°C) (max) (mV) 1.25 Iq per channel (typ) (mA) 0.94 Vn at 1 kHz (typ) (nV√Hz) 7 THD + N at 1 kHz (typ) (%) 0.00035 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.066 Product type Essential Architecture CMOS CMRR (typ) (dB) 102
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 GBW (typ) (MHz) 13 Slew rate (typ) (V/µs) 5 Rail-to-rail In, Out Vos (offset voltage at 25°C) (max) (mV) 1.25 Iq per channel (typ) (mA) 0.94 Vn at 1 kHz (typ) (nV√Hz) 7 THD + N at 1 kHz (typ) (%) 0.00035 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.066 Product type Essential Architecture CMOS CMRR (typ) (dB) 102
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • 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
    • 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

      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).

       

       

      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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      Top documentation Type Title Format options Date
      * Data sheet OPA1671 13-MHz, Low-Noise, Rail-to-Rail, Audio Operational Amplifier datasheet (Rev. B) PDF | HTML 14 Jul 2019
      Circuit design Transimpedance amplifier circuit. (Rev. B) PDF | HTML 26 Sep 2024
      Application note The Davies Sinusoidal Generator PDF | HTML 31 Oct 2022
      Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 14 Jun 2021
      Technical article No headroom, no problem: buffering and filtering an audio signal chain in low-volt PDF | HTML 11 Apr 2019
      Application note Phantom Power with Operational Amplifiers (Rev. A) 09 Nov 2018
      Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005

      Design & development

      For additional terms or required resources, click any title below to view the detail page where available.

      Evaluation board

      AMP-PDK-EVM — Amplifier performance development kit evaluation module

      The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

      User guide: PDF | HTML
      Evaluation board

      DIP-ADAPTER-EVM — DIP adapter evaluation module

      Speed up your op amp prototyping and testing with the DIP adapter evaluation module (DIP-ADAPTER-EVM), which provides a fast, easy and inexpensive way to interface with small surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them (...)

      User guide: PDF
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      Evaluation board

      DIYAMP-EVM — Universal do-it-yourself (DIY) amplifier circuit evaluation module

      The DIYAMP-EVM is an evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT-23 and SOIC) (...)

      User guide: PDF | HTML
      Simulation model

      OPA1671 PSpice Model (Rev. C)

      SBOMAS1C.ZIP (29 KB) - PSpice Model
      Simulation model

      OPA1671 TINA-TI Reference Design (Rev. B)

      SBOMAR9B.TSC (360 KB) - TINA-TI Reference Design
      Simulation model

      OPA1671 TINA-TI Spice Model (Rev. A)

      SBOMAS0A.ZIP (8 KB) - TINA-TI Spice Model
      Calculation tool

      ANALOG-ENGINEER-CALC PC software analog engineer's calculator

      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 operational-amplifier (...)

      Supported products & hardware

      Supported products & hardware

      Simulation tool

      PSPICE-FOR-TI — PSpice® for TI design and simulation tool

      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 (...)
      Simulation tool

      TINA-TI — SPICE-based analog simulation program

      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 (...)
      User guide: PDF
      Package Pins CAD symbols, footprints & 3D models
      SOT-23 (DBV) 5 Ultra Librarian
      SOT-SC70 (DCK) 5 Ultra Librarian

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