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Product details

Parameters

Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 5 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 GBW (Typ) (MHz) 40 Slew rate (Typ) (V/us) 27 Rail-to-rail Out Vos (offset voltage @ 25 C) (Max) (mV) 0.5 Iq per channel (Typ) (mA) 3.6 Vn at 1 kHz (Typ) (nV/rtHz) 1.1 Features Burr-Brown™ Audio, Premium Sound, Small Size THD + N @ 1 kHz (Typ) (%) 0.000015 Rating Catalog Operating temperature range (C) -40 to 85 Output current (Typ) (mA) 55 Architecture Bipolar CMRR (Typ) (dB) 120 Input bias current (Max) (pA) 250000 open-in-new Find other Audio op amps

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 WSON (DRG) 8 9 mm² 3 x 3 open-in-new Find other Audio op amps

Features

  • Superior Sound Quality
  • Ultralow Noise: 1.1 nV/√Hz at 1 kHz
  • Ultralow Distortion:
    0.000015% at 1 kHz
  • High Slew Rate: 27 V/μs
  • Wide Bandwidth: 40 MHz (G = +1)
  • High Open-Loop Gain: 130 dB
  • Unity Gain Stable
  • Low Quiescent Current:
    3.6 mA per Channel
  • Rail-to-Rail Output
  • Wide Supply Range: ±2.25 V to ±18 V
  • Single and Dual Versions Available
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Description

The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1.1-nV/√Hz noise density with an ultralow distortion of 0.000015% at 1 kHz. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. These devices also have a high output drive capability of ±30 mA.

These devices operate over a very wide supply range of ±2.25 V to ±18 V, on only 3.6 mA of supply current per channel. The OPA1611 and OPA1612 op amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.

The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.

Both the OPA1611 and OPA1612 are available in SOIC-8 packages and the OPA1612 is available in SON-8. These devices are specified from –40°C to +85°C.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet OPA161x SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifiers datasheet (Rev. C) Aug. 27, 2014
Technical articles Get started with smart home audio design May 09, 2019
Technical articles No headroom, no problem: buffering and filtering an audio signal chain in low-voltage systems Apr. 11, 2019
Application notes Band pass filtered inverting attenuator circuit (Rev. A) Feb. 01, 2019
Application notes Current-to-voltage converter circuit for audio DACs Jan. 16, 2019
White papers Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) Nov. 30, 2018
Technical articles Forget the tiny homes craze – Have you heard about tiny inductors for automotive Class-D amplifiers? Oct. 12, 2017
Technical articles Unique active mux capability combines buffer and switch into one solution Oct. 10, 2017
Application notes HiFi Audio Circuit Design Aug. 23, 2017
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application notes Analog Applications Journal 2Q 2015 Apr. 28, 2015
Application notes Stabilizing difference amplifiers for headphone applications Apr. 28, 2015
Application notes Reducing distortion from CMOS analog switches Jan. 29, 2015
Application notes Distortion and source impedance in JFET-input op amps Oct. 24, 2014
Application notes Compensate Transimpedance Amplifiers Intuitively (Rev. A) Mar. 30, 2005
Application notes Feedback Plots Define Op Amp AC Performance Sep. 27, 2000

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SBAM413.ZIP (44 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM396D.ZIP (15 KB) - PSpice Model
SIMULATION MODELS Download
SBOM397D.ZIP (10 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM398D.TSC (1099 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
SIMULATION TOOLS Download
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
CALCULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
DESIGN TOOLS Download
SBOC503.ZIP (290 KB)

Reference designs

REFERENCE DESIGNS Download
A High-Fidelity Headphone Amplifier for Current Output Audio DACs Reference Design
TIPD177 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 audio (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Small, High-Efficiency Split-Rail Supply Reference Design for Portable Audio Applications
PMP9781 Differential Headphone amplifiers require positive and negative voltages. In this reference design, both voltages are generated from a single input voltage with an all integrated split-rail converter. It only requires one inductor and a minimal amount of external components to achieve a high (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SON (DRG) 8 View options

Ordering & quality

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