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OPA1622

ACTIVE

SoundPlus™ Audio Operational Amplifier with High Performance, Low THD+N and Bipolar Input

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Data sheet

OPA1622

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 32 Slew rate (typ) (V/µs) 10 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 2.6 Vn at 1 kHz (typ) (nV√Hz) 2.8 Features Burr-Brown™ Audio, High Cload Drive, Premium Sound, Shutdown, Small Size THD + N at 1 kHz (typ) (%) 0.000018 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.145 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 127 Input bias current (max) (pA) 2000000
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 32 Slew rate (typ) (V/µs) 10 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 2.6 Vn at 1 kHz (typ) (nV√Hz) 2.8 Features Burr-Brown™ Audio, High Cload Drive, Premium Sound, Shutdown, Small Size THD + N at 1 kHz (typ) (%) 0.000018 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.145 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 127 Input bias current (max) (pA) 2000000
VSON (DRC) 10 9 mm² 3 x 3
  • High-Fidelity Sound Quality
  • Ultralow Noise: 2.8 nV/√Hz at 1 kHz
  • Ultralow Total Harmonic Distortion + Noise:
    –119 dB THD+N (142 mW/Ch into 32 Ω/Ch)
  • Wide Gain Bandwidth Product:
    32 MHz (G = +1000)
  • High Slew Rate: 10 V/µs
  • High Capacitive-Load Drive Capability: > 600 pF
  • High Open-Loop Gain: 136 dB (600-Ω Load)
  • Low Quiescent Current: 2.6 mA per Channel
  • Low-Power Shutdown Mode With Reduced Pop
    and Click Noise: 5 µA per Channel
  • Short-Circuit Protection
  • Wide Supply Range: ±2 V to ±18 V
  • Available in small VSON-10 µPackage
  • High-Fidelity Sound Quality
  • Ultralow Noise: 2.8 nV/√Hz at 1 kHz
  • Ultralow Total Harmonic Distortion + Noise:
    –119 dB THD+N (142 mW/Ch into 32 Ω/Ch)
  • Wide Gain Bandwidth Product:
    32 MHz (G = +1000)
  • High Slew Rate: 10 V/µs
  • High Capacitive-Load Drive Capability: > 600 pF
  • High Open-Loop Gain: 136 dB (600-Ω Load)
  • Low Quiescent Current: 2.6 mA per Channel
  • Low-Power Shutdown Mode With Reduced Pop
    and Click Noise: 5 µA per Channel
  • Short-Circuit Protection
  • Wide Supply Range: ±2 V to ±18 V
  • Available in small VSON-10 µPackage

The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2.8-nV/√Hz noise density with an ultralow THD+N of –119.2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 ideal for use in portable-audio applications. This device also has a high output-drive capability of +145 mA / –130 mA.

The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2.6 mA of supply current per channel. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. The OPA1622 includes a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 5 µA. This shutdown feature is specifically designed to eliminate click and pop noise when transitioning into or out of shutdown mode.

The OPA1622 features a unique internal layout for lowest crosstalk, and freedom from interactions between channels, even when overdriven or overloaded. This device is specified from –40°C to +125°C.

The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2.8-nV/√Hz noise density with an ultralow THD+N of –119.2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 ideal for use in portable-audio applications. This device also has a high output-drive capability of +145 mA / –130 mA.

The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2.6 mA of supply current per channel. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. The OPA1622 includes a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 5 µA. This shutdown feature is specifically designed to eliminate click and pop noise when transitioning into or out of shutdown mode.

The OPA1622 features a unique internal layout for lowest crosstalk, and freedom from interactions between channels, even when overdriven or overloaded. This device is specified from –40°C to +125°C.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet OPA1622 SoundPlus™ High-Fidelity, Bipolar-Input, Audio Operational Amplifier datasheet (Rev. B) PDF | HTML 03 May 2016
Application note How to Measure Total Harmonic Distortion of an Op-Amp and THD + N Fundamentals PDF | HTML 09 Nov 2023
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 14 Jun 2021
Application note HiFi Audio Circuit Design 23 Aug 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article Pump it up quietly PDF | HTML 19 Feb 2016
Analog Design Journal Stabilizing difference amplifiers for headphone applications 28 Apr 2015
Analog Design Journal Reducing distortion from CMOS analog switches 29 Jan 2015
Analog Design Journal Distortion and source impedance in JFET-input op amps 24 Oct 2014
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 30 Sep 2014
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

OPA1622EVM — OPA1622 Audio Operational Amplifier Evaluation Module

The OPA1622EVM is a hardware platform for evaluating the performance of the OPA1622 audio operational amplifier (op amp). On the EVM, each channel of the OPA1622 is configured as a difference amplifier that receives a differential input signal from an audio analyzer or audio DAC and outputs a (...)

User guide: PDF
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Simulation model

OPA1622 PSpice Model (Rev. D)

SBOM958D.ZIP (30 KB) - PSpice Model
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Simulation model

OPA1622 TINA-TI Reference Design (Rev. C)

SBOM956C.TSC (342 KB) - TINA-TI Reference Design
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Simulation model

OPA1622 TINA-TI Spice Model (Rev. C)

SBOM957C.ZIP (11 KB) - TINA-TI Spice Model
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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

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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 (...)
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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
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Reference designs

TIDA-060031 — Precision DAC reference design for premium audio in hi-fi applications

The DAC11001 audio reference design is a unique and comprehensive audio design featuring the DAC11001A and DAC11001B. The DAC11001 is a 20-bit, low-noise, ultra-high performance precision R-2R digital-to-analog converter (DAC). Delta-sigma type modulators are the most common DACs used in audio (...)
Design guide: PDF
Reference designs

TIDA-01341 — Hi-Fi Headphone Amplifier Power Supply Reference Design

Headphone amplifiers usually require positive and negative voltages. In this reference design, both voltages are generated from a single input voltage with an integrated split-rail charge-pump converter. It provides small solution size with five capacitors and four resistors.
Design guide: PDF
Schematic: PDF
Reference designs

TIPD177 — A High-Fidelity Headphone Amplifier for Current Output Audio DACs Reference Design

This TI Precision Verified Design circuit converts the differential current output of audio DACs to a single-ended voltage capable of driving low impedance headphones. This design is capable of meeting the high-fidelity performance levels currently being popularized in cell phones and portable (...)
User guide: PDF
Schematic: PDF
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