Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Vos (offset voltage @ 25 C) (Max) (mV) 0.05 GBW (Typ) (MHz) 45 Features Shutdown, Small Size Slew rate (Typ) (V/us) 27 Rail-to-rail Out Offset drift (Typ) (uV/C) 0.15 Iq per channel (Typ) (mA) 3.6 Vn at 1 kHz (Typ) (nV/rtHz) 1.1 CMRR (Typ) (dB) 120 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 125000 Output current (Typ) (mA) 30 Architecture Bipolar THD + N @ 1 kHz (Typ) (%) 0.000015
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Vos (offset voltage @ 25 C) (Max) (mV) 0.05 GBW (Typ) (MHz) 45 Features Shutdown, Small Size Slew rate (Typ) (V/us) 27 Rail-to-rail Out Offset drift (Typ) (uV/C) 0.15 Iq per channel (Typ) (mA) 3.6 Vn at 1 kHz (Typ) (nV/rtHz) 1.1 CMRR (Typ) (dB) 120 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 125000 Output current (Typ) (mA) 30 Architecture Bipolar THD + N @ 1 kHz (Typ) (%) 0.000015
SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 WSON (DRG) 8 9 mm² 3 x 3
  • Low voltage noise: 1.1 nV/√Hz at 1 kHz
  • Input voltage noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset voltage: 125 µV (maximum)
  • Offset voltage drift: 0.35 µV/°C (typical)
  • Low supply current: 3.6 mA/Ch (typical)
  • Unity-gain stable
  • Gain bandwidth product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew rate: 27 V/µs
  • 16-Bit settling: 700 ns
  • Wide supply range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-rail output
  • Output current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8
  • Low voltage noise: 1.1 nV/√Hz at 1 kHz
  • Input voltage noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset voltage: 125 µV (maximum)
  • Offset voltage drift: 0.35 µV/°C (typical)
  • Low supply current: 3.6 mA/Ch (typical)
  • Unity-gain stable
  • Gain bandwidth product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew rate: 27 V/µs
  • 16-Bit settling: 700 ns
  • Wide supply range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-rail output
  • Output current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8

The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high-speed, and wide output swing of the OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.

The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high-speed, and wide output swing of the OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet OPAx211 1.1-nv/√Hz Noise, Low Power, Precision Operational Amplifiers datasheet (Rev. L) PDF | HTML 30 Jan 2020
E-book An Engineer’s Guide to Designing with Precision Amplifiers 29 Apr 2021
Circuit design DAC force and sense reference drive circuit 16 Jan 2019
Analog Design Journal Q3 2009 Issue Analog Applications Journal 24 Sep 2018
Analog Design Journal Design and analysis of a TGC circuit to drive the control voltage 26 Apr 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
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
Technical article So what exactly is an Op Amp shutdown pin supposed to do? 22 Apr 2014
Technical article What you always wanted to know about TINA-TI but were afraid to ask! (Part 3) 09 Apr 2014
Application note OPA211, OPA211A, OP2211, OPA2211A EMI Immunity Performance 24 Sep 2012
User guide DEM-OPA-SO-1A User's Guide (Rev. B) 12 Apr 2012
User guide DEM-OPA-SO-1B User's Guide (Rev. D) 12 Apr 2012
More literature Журнал по применению аналоговых компонентов 2кв. 2010 08 Aug 2011
User guide DEM-OPA-SO-1B User's Guide (Rev. C) 22 Apr 2011
More literature Журнал по применению аналоговых компонентов 3кв. 2010 13 Jan 2011
Analog Design Journal 3Q 2010 Issue Analog Applications Journal 11 Aug 2010
Analog Design Journal Operational amplifier gain stability, Part 3: AC gain-error analysis 11 Aug 2010
Analog Design Journal 2Q 2010 Issue Analog Applications Journal 06 May 2010
Analog Design Journal Operational amplifier gain stability, Part 2: DC gain-error analysis 06 May 2010
Analog Design Journal Using infinite-gain, MFB filter topology in fully differential active filters 14 Jul 2009
User guide DEM-OPA-SO-1A User's Guide (Rev. A) 16 Mar 2006

Design & development

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

Evaluation board

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Evaluation board

DEM-OPA-SO-1B — Single op-amp evaluation module for SO-8 (non-inverting) package

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Not available on TI.com
Evaluation board

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Simulation model

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SBOMBW8A.ZIP (30 KB) - PSpice Model
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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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Calculation tool

OPAMP-NOISECALC — Noise Calculator, Generator and Examples

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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TINA-TI — SPICE-based analog simulation program

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Reference designs

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Reference designs

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Reference designs

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Reference designs

TIDA-00209 — Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives Using AM437x

This reference design uses the AMC130x reinforced isolated delta-sigma modulators along with AM437x Sitara™ ARM® Cortex® -A9 Processor, which implements Sinc filters on PRU-ICSS. The design provides an ability to evaluate the performance of these measurements: three motor currents, three (...)
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Reference designs

TIPD147 — Noise Measurement Post-Amp for Oscilloscope or Spectrum Analyzer

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User guide: PDF
Schematic: PDF
Package Pins Download
SOIC (D) 8 View options
SON (DRG) 8 View options
VSSOP (DGK) 8 View options

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