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OPA1612

ACTIVE

SoundPlus™ Audio Operational Amplifier with 1.1nV/√Hz Noise, Low THD and Precision

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Data sheet

OPA1612

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 40 Slew rate (typ) (V/µs) 27 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 Features Burr-Brown™ Audio, Premium Sound, Small Size THD + N at 1 kHz (typ) (%) 0.000015 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.055 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 120 Input bias current (max) (pA) 250000
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 40 Slew rate (typ) (V/µs) 27 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 Features Burr-Brown™ Audio, Premium Sound, Small Size THD + N at 1 kHz (typ) (%) 0.000015 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.055 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 120 Input bias current (max) (pA) 250000
SOIC (D) 8 29.4 mm² 4.9 x 6 WSON (DRG) 8 9 mm² 3 x 3
  • 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
  • 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

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.

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

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Type Title Date
* Data sheet OPA161x SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifiers datasheet (Rev. C) PDF | HTML 27 Aug 2014
Application note 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-voltage systems 11 Apr 2019
Circuit design Band pass filtered inverting attenuator circuit (Rev. A) 01 Feb 2019
Circuit design Current-to-voltage converter circuit for audio DACs 16 Jan 2019
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) 30 Nov 2018
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 Amp up your cans: Is your op amp stable? (Part 2) 22 Jan 2016
Analog Design Journal Analog Applications Journal 2Q 2015 28 Apr 2015
Analog Design Journal Stabilizing difference amplifiers for headphone applications 28 Apr 2015
Analog Design Journal Reducing distortion from CMOS analog switches 29 Jan 2015
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
Analog Design Journal Distortion and source impedance in JFET-input op amps 24 Oct 2014
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005
Application note Feedback Plots Define Op Amp AC Performance 27 Sep 2000

Design & development

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

Simulation model

OPA161x PSpice Model (Rev. G)

SBOM396G.ZIP (27 KB) - PSpice Model
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Simulation model

OPA161x TINA-TI Reference Design (Rev. F)

SBOM398F.TSC (302 KB) - TINA-TI Reference Design
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Simulation model

OPA161x TINA-TI SPICE Model (Rev. F)

SBOM397F.ZIP (11 KB) - TINA-TI Spice Model
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Simulation model

SBAA333 Companion Simulations

SBAM413.ZIP (44 KB) - TINA-TI Reference Design
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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 operational-amplifier (...)
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Design tool

CIRCUIT060050 — Band pass filtered inverting attenuator circuit

This tunable band-pass attenuator reduces signal level by –40 dB over the frequency range from 10 Hz to 100 kHz. It also allows for independent control of the DC output level. For this design, the pole frequencies were selected outside the pass band to minimize attenuation within the specified (...)
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Design tool

SBOC503 — Simulation for Band Pass Filtered Inverting Attenuator Circuit

Supported products & hardware

Supported products & hardware

Products
General-purpose op amps
OPA172 — Single, 36-V, 10-MHz, low-power operational amplifier
Audio op amps
OPA1612 — SoundPlus™ Audio Operational Amplifier with 1.1nV/√Hz Noise, Low THD and Precision
Hardware development
Design tool
CIRCUIT060050 — Band pass filtered inverting attenuator circuit
Download
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

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
Reference designs

PMP9781 — Small, High-Efficiency Split-Rail Supply Reference Design for Portable Audio Applications

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 (...)
Schematic: PDF
Package Pins Download
SOIC (D) 8 View options
WSON (DRG) 8 View options
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