Product details

Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 5 Total supply voltage (Max) (+5V=5, +/-5V=10) 30 GBW (Typ) (MHz) 180 Slew rate (Typ) (V/us) 50 Rail-to-rail No Vos (offset voltage @ 25 C) (Max) (mV) 3 Iq per channel (Typ) (mA) 14 Vn at 1 kHz (Typ) (nV/rtHz) 1.3 Features Burr-Brown™ Audio, Shutdown THD + N @ 1 kHz (Typ) (%) 0.000022 Rating Catalog Operating temperature range (C) -40 to 85 Output current (Typ) (mA) 85 Architecture Voltage FB CMRR (Typ) (dB) 90 Input bias current (Max) (pA) 200000
Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 5 Total supply voltage (Max) (+5V=5, +/-5V=10) 30 GBW (Typ) (MHz) 180 Slew rate (Typ) (V/us) 50 Rail-to-rail No Vos (offset voltage @ 25 C) (Max) (mV) 3 Iq per channel (Typ) (mA) 14 Vn at 1 kHz (Typ) (nV/rtHz) 1.3 Features Burr-Brown™ Audio, Shutdown THD + N @ 1 kHz (Typ) (%) 0.000022 Rating Catalog Operating temperature range (C) -40 to 85 Output current (Typ) (mA) 85 Architecture Voltage FB CMRR (Typ) (dB) 90 Input bias current (Max) (pA) 200000
HVSSOP (DGN) 8 9 mm² 3 x 3 SOIC (D) 8 19 mm² 3.91 x 4.9
  • Superior Sound Quality
  • Ultra Low Distortion: 0.000022%
  • Low Noise: 1.3 nV/√Hz
  • High Speed:
    • Slew Rate: 50 V/μs
    • Gain Bandwidth: 180 MHz
  • Fully Differential Architecture:
    • Balanced Input and Output Converts Single-Ended Input to Balanced Differential Output
  • Wide Supply Range: ±2.5 V to ±16 V
  • Shutdown to Conserve Power
  • APPLICATIONS
    • Audio ADC Driver
    • Balanced Line Driver
    • Balanced Receiver
    • Active Filter
    • Preamplifier
  • Superior Sound Quality
  • Ultra Low Distortion: 0.000022%
  • Low Noise: 1.3 nV/√Hz
  • High Speed:
    • Slew Rate: 50 V/μs
    • Gain Bandwidth: 180 MHz
  • Fully Differential Architecture:
    • Balanced Input and Output Converts Single-Ended Input to Balanced Differential Output
  • Wide Supply Range: ±2.5 V to ±16 V
  • Shutdown to Conserve Power
  • APPLICATIONS
    • Audio ADC Driver
    • Balanced Line Driver
    • Balanced Receiver
    • Active Filter
    • Preamplifier
  • The OPA1632 is a fully-differential amplifier designed for driving high-performance audio analog-to-digital converters (ADCs). It provides the highest audio quality, with very low noise and output drive characteristics optimized for this application. The OPA1632’s excellent gain bandwidth of 180 MHz and very fast slew rate of 50 V/μs produce exceptionally low distortion. Very low input noise of 1.3 nV/√Hz further ensures maximum signal-to-noise ratio and dynamic range.

    The flexibility of the fully differential architecture allows for easy implementation of a single-ended to fully-differential output conversion. Differential output reduces even-order harmonics and minimizes common-mode noise interference. The OPA1632 provides excellent performance when used to drive high-performance audio ADCs such as the PCM1804. A shutdown feature also enhances the flexibility of this amplifier.

    The OPA1632 is available in an SO-8 package and a thermally-enhanced MSOP-8 PowerPAD package.

    For all available packages, see the orderable addendum at the end of the data sheet.

    The OPA1632 is a fully-differential amplifier designed for driving high-performance audio analog-to-digital converters (ADCs). It provides the highest audio quality, with very low noise and output drive characteristics optimized for this application. The OPA1632’s excellent gain bandwidth of 180 MHz and very fast slew rate of 50 V/μs produce exceptionally low distortion. Very low input noise of 1.3 nV/√Hz further ensures maximum signal-to-noise ratio and dynamic range.

    The flexibility of the fully differential architecture allows for easy implementation of a single-ended to fully-differential output conversion. Differential output reduces even-order harmonics and minimizes common-mode noise interference. The OPA1632 provides excellent performance when used to drive high-performance audio ADCs such as the PCM1804. A shutdown feature also enhances the flexibility of this amplifier.

    The OPA1632 is available in an SO-8 package and a thermally-enhanced MSOP-8 PowerPAD package.

    For all available packages, see the orderable addendum at the end of the data sheet.

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    Technical documentation

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    Type Title Date
    * Data sheet OPA1632 High-Performance, Fully-Differential Audio Operational Amplifier datasheet (Rev. C) 29 Oct 2015
    Application note Understanding Op Amp Noise in Audio Circuits 14 Jun 2021
    Application note Optimizing Noise and Power with Super Beta-Fully Differential Amplifiers 07 Dec 2020
    Technical article No headroom, no problem: buffering and filtering an audio signal chain in low-voltage systems 11 Apr 2019
    Application note Q3 2009 Issue Analog Applications Journal 24 Sep 2018
    Design guide TIDA-01359 Audio-OPA1632EVM Audio Interface Board Design Guide 13 Apr 2018
    E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
    Application note Fully-Differential Amplifiers (Rev. E) 19 Sep 2016
    Technical article Amp up your cans: Is your op amp stable? (Part 2) 22 Jan 2016
    Technical article Stress-induced outbursts: Microphonics in ceramic capacitors (Part 2) 23 Dec 2014
    Technical article Stress-induced outbursts: Microphonics in ceramic capacitors (Part 1) 19 Dec 2014
    Application note Using infinite-gain, MFB filter topology in fully differential active filters 14 Jul 2009
    Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005
    Application note Analysis of fully differential amplifiers 11 Mar 2005
    Application note Designing for low distortion with high-speed op amps 02 Mar 2005
    Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

    Design & development

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

    Simulation model

    OPA1632 PSpice Model (Rev. C)

    SBOC064C.ZIP (2 KB) - PSpice Model
    Simulation model

    OPA1632 TINA-TI Reference Design (Rev. D)

    SBOC100D.TSC (270 KB) - TINA-TI Reference Design
    Simulation model

    OPA1632 TINA-TI Spice Model (Rev. C)

    SBOM182C.ZIP (6 KB) - TINA-TI Spice Model
    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 (...)
    Calculation tool

    ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
    参考设计

    TIDA-01359 — Analog Audio Amplifier Front-end Reference Design with Improved Noise and Distortion

    The Analog Audio Amplifier Front-end Reference Design demonstrates how to build an audio front end for the TPA32xx class-D amplifier. The AUDIO-OPA1632EVM is the board that was designed to test the results of this design. Design files for the board are available in the reference design product (...)
    参考设计

    PMP10710 — Public Announcement Audio Reference Design utilizing best in class Boost Controller

    PMP10710 is a 200W design for public announcement audio system which can be used in 100W +100W Stereo or 200W Woofer Applications. The design is broadly divided into four main stages:
    1. Single-Phase Synchronous Boost Converter using the LM5122 controller IC.  The design accepts an input voltage of (...)
    参考设计

    TIDA-RESOLVER-APPLICATIONS-REFERENCE-DESIGN — Motherboard/controller for the AMC1210

    This is a reference design for resolver applications and part of a modular system for evaluating our delta-sigma modulators. The software included allows use of the AMC1210 in a variety of configurations for resolver and current-shunt applications and features a data-export utility to support data (...)
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    Ordering & quality

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