OPA1612

ACTIVE

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

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 mm × 6 mm) WSON (DRG) 8 9 mm² (3 mm × 3 mm)
  • 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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Top documentation Type Title Format options Date
* Data sheet OPA161x SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifiers datasheet (Rev. C) PDF | HTML Aug 27, 2014
Circuit design Band pass filtered inverting attenuator circuit (Rev. B) PDF | HTML Oct 16, 2024
Circuit design Current-to-voltage converter circuit for audio DACs (Rev. A) PDF | HTML Sep 19, 2024
Application note How to Measure Total Harmonic Distortion of an Op-Amp and THD + N Fundamentals PDF | HTML Nov 9, 2023
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML Jun 14, 2021
Application note HiFi Audio Circuit Design Aug 23, 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
Analog design Journal Analog Applications Journal 2Q 2015 Apr 28, 2015
Analog design Journal Stabilizing difference amplifiers for headphone applications Apr 28, 2015
Analog design Journal Reducing distortion from CMOS analog switches Jan 29, 2015
Analog design Journal Distortion and source impedance in JFET-input op amps Oct 24, 2014
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML Sep 30, 2014
Application note 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.

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
Supported products & hardware
Simulation model

OPA161x PSpice Model (Rev. G)

SBOM396G.ZIP (27 KB) - PSpice model
Supported products & hardware
Simulation model

OPA161x TINA-TI Reference Design (Rev. F)

SBOM398F (302 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

OPA161x TINA-TI SPICE Model (Rev. F)

SBOM397F.ZIP (11 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

SBAA333 Companion Simulations

SBAM413.ZIP (44 KB) - TINA-TI reference design
Supported products & hardware
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
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 (...)
Supported products & hardware
Design tool

SBOC503 — Simulation for Band Pass Filtered Inverting Attenuator Circuit

Supported products & hardware
Reference design

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 (...)

Supported products & hardware
Reference design

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 (...)

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
WSON (DRG) 8 Ultra Librarian

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