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Product details

Parameters

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 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 Features Shutdown, Small Size Architecture Bipolar open-in-new Find other Precision op amps (Vos<1mV)

Package | Pins | Size

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 open-in-new Find other Precision op amps (Vos<1mV)

Features

  • 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

All trademarks are the property of their respective owners.

open-in-new Find other Precision op amps (Vos<1mV)

Description

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.

open-in-new Find other Precision op amps (Vos<1mV)
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Technical documentation

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Type Title Date
* Datasheet OPAx211 1.1-nv/√Hz Noise, Low Power, Precision Operational Amplifiers datasheet (Rev. L) Jan. 30, 2020
Application notes DAC force and sense reference drive circuit Jan. 16, 2019
Application notes Q3 2009 Issue Analog Applications Journal Sep. 24, 2018
Technical articles Unique active mux capability combines buffer and switch into one solution Oct. 10, 2017
Technical articles Transimpedance amplifier designs for high-performance, cost-sensitive smoke detector applications Aug. 10, 2017
Application notes Design and analysis of a TGC circuit to drive the control voltage Apr. 26, 2017
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical articles Four ways to design an amplifier without a rail-to-rail op amp Jul. 21, 2016
Technical articles Amp up your cans: Is your op amp stable? (Part 2) Jan. 22, 2016
Application notes OPA211, OPA211A, OP2211, OPA2211A EMI Immunity Performance Sep. 24, 2012
User guides DEM-OPA-SO-1A User's Guide (Rev. B) Apr. 12, 2012
User guides DEM-OPA-SO-1B User's Guide (Rev. D) Apr. 12, 2012
More literature Журнал по применению аналоговых компонентов 2кв. 2010 Aug. 08, 2011
User guides DEM-OPA-SO-1B User's Guide (Rev. C) Apr. 22, 2011
More literature Журнал по применению аналоговых компонентов 3кв. 2010 Jan. 13, 2011
More literature Industry's First –36-V LDO [WMV] Aug. 12, 2010
Application notes 3Q 2010 Issue Analog Applications Journal Aug. 11, 2010
Application notes Operational amplifier gain stability, Part 3: AC gain-error analysis Aug. 11, 2010
Application notes 2Q 2010 Issue Analog Applications Journal May 06, 2010
Application notes Operational amplifier gain stability, Part 2: DC gain-error analysis May 06, 2010
Application notes Using infinite-gain, MFB filter topology in fully differential active filters Jul. 14, 2009
User guides DEM-OPA-SO-1A User's Guide (Rev. A) Mar. 16, 2006

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$2,499.00
Description

The DDC2256AEVM evaluation module  (EVM)  is  an  evaluation  kit  for the DDC2256A,  a  256-channel,  current  input,  24-bit analog-to-digital (A/D) converter. The EVM kit, comprised of a DUT board and a capture board, contains two DDC2256A (...)

Features
  • All-in-one solution for evaluating two DDC2256A devices in a system-like setting
  • On-board FPGA, memory, and USB interface allow for data capture and analysis of large sample datasets
  • Flexible supply configurations for simple or advanced experimentation
  • Various input voltage configurations allow for (...)
EVALUATION BOARDS Download
document-generic User guide
$5.00
Description

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

EVALUATION BOARDS Download
document-generic User guide
$5.00
Description

The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

For more (...)

EVALUATION BOARDS Download
document-generic User guide
Description

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

Features
  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost
EVALUATION BOARDS Download
document-generic User guide
Description
The DIYAMP-EVM is a unique evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT23, SOIC) and 12 (...)
Features
  • 3 packages to choose from: SC70-5, SOT23-5 and SOIC-8
  • 12 circuit configurations to choose from: Noninverting, Inverting, Active Filters, Difference Amp, Comparator and more!
  • Dual and single supply configurations
  • PCB designed for High performance: Optimized for each function
  • Multiple interface options (...)
EVALUATION BOARDS Download
document-generic User guide
Description

The Universal OPAMPEVM is a series of general purpose blank circuit boards that simplify prototyping circuits for a variety of IC package types. The evaluation module board design allows many different circuits to be constructed easily and quickly. Five models are offered with each targeted for (...)

Design tools & simulation

SIMULATION MODELS Download
SBOC247F.TSC (315 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOC250C.ZIP (14 KB) - PSpice Model
SIMULATION MODELS Download
SBOM307E.ZIP (10 KB) - TINA-TI Spice Model
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
  • (...)
CALCULATION TOOLS Download
Noise Calculator, Generator and Examples
OPAMP-NOISECALC This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data (...)
DESIGN TOOLS Download
Single-supply, low-side, unidirectional current-sensing circuit
CIRCUIT060001 — This single–supply, low–side, current sensing solution accurately detects load current up to 1A and converts it to a voltage between 50mV and 4.9V. The input current range and output voltage range can be scaled as necessary and larger supplies can be used to accommodate larger swings.
document-generic User guide
Features
  • Senses Temperature between 25°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
DESIGN TOOLS Download
Temperature sensing with NTC thermistor circuit
CIRCUIT060002 — This temperature sensing circuit uses a resistor in series with a negative–temperature–coefficient (NTC) thermistor to form a voltage divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
document-generic User guide
Features
  • Senses Temperature between 25°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
DESIGN TOOLS Download
Temperature sensing with PTC thermistor circuit
CIRCUIT060003 — This temperature sensing circuit uses a resistor in series with a positive–temperature–coefficient (PTC) thermistor to form a voltage–divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
document-generic User guide
Features
  • Senses Temperature between 0°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
DESIGN TOOLS Download
Low-noise and long-range PIR sensor conditioner circuit
CIRCUIT060004 — This two stage amplifier design amplifies and filters the signal from a passive infrared (PIR) sensor. The circuit includes multiple low–pass and high–pass filters to reduce noise at the output of the circuit to be able to detect motion at long distances and reduce false triggers. This (...)
document-generic User guide
Features
  • Single 5V Supply 
  • Passes frequencies between 0.7Hz - 10Hz 
  • AC Gain: 90dB
DESIGN TOOLS Download
High-side current sensing with discrete difference amplifier circuit
CIRCUIT060005 — This single–supply, high–side, low–cost current sensing solution detects load current between 50mA and 1A and converters it to an output voltage from 0.25V to 5V. High–side sensing allows for the system to identify ground shorts and does not create a ground disturbance on the load.
document-generic User guide
Features
  • Single 36V supply 
  • Input: 50mA to 1A 
  • Output: 0.25V to 5V
DESIGN TOOLS Download
Bridge amplifier circuit
CIRCUIT060006 — A strain gauge is a sensor whose resistance varies with applied force. To measure the variation in resistance, the strain gauge is placed in a bridge configuration. This design uses a 2 op amp instrumentation circuit to amplify a differential signal created by the change in resistance of a strain (...)
document-generic User guide
Features
  • Single 5V supply with half-supply reference
  • Input: -2.22mV to 2.27mV differential
  • Output: 225mV - 4.72V
  • Strain gauge resistance variation: 115 - 125 Ohms
  • Gain: 1001V/V
DESIGN TOOLS Download
Low-side, bidirectional current-sensing circuit
CIRCUIT060007 — This single-supply low-side, bidirectional current sensing solution can accurately detect load currents from –1A to 1A. The linear range of the output is from 110mV to 3.19V. Low-side current sensing keeps the common-mode voltage near ground, and is thus most useful in applications with large (...)
document-generic User guide
Features
  • Single 5V supply with half-supply reference
  • Input: -2.22mV to 2.27mV differential
  • Output: 225mV - 4.72V 
  • Strain gauge resistance variation: 115 - 125 Ohms 
  • Gain: 1001V/V
DESIGN TOOLS Download
Full-wave rectifier circuit
CIRCUIT060008 — This absolute value circuit can turn alternating current (AC) signals to single polarity signals. This circuit functions with limited distortion for ±10-V input signals at frequencies up to 50kHz and for signals as small as ±25mV at frequencies up to 1kHz.
document-generic User guide
Features
  • 30V Split supply with ground reference 
  • Input: +/-25mV to +/-10V 
  • Output: 25mV to 10V
DESIGN TOOLS Download
Half-wave rectifier circuit
CIRCUIT060009 — The precision half-wave rectifier inverts and transfers only the negative-half input of a time varying input signal (preferably sinusoidal) to its output. By appropriately selecting the feedback resistor values, different gains can be achieved. Precision half-wave rectifiers are commonly used with (...)
Features
  • 5V Split supply 
  • Input: +/-0.2mVpp to +/-4Vpp 
  • Output: 0.1V to 2V
DESIGN TOOLS Download
PWM generator circuit
CIRCUIT060010 — This circuit utilizes a triangle wave generator and comparator to generate a 500 kHz pulse-width modulated (PWM) waveform with a duty cycle that is inversely proportional to the input voltage. An op amp and comparator generate a triangle waveform which is applied to the inverting input of a second (...)
document-generic User guide
Features
  • 5V Single supply with half-supply reference 
  • Input: -2V to 2V 
  • Output: 0V to 5V

Reference designs

REFERENCE DESIGNS Download
Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design
TIDA-00080 This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution eliminates (...)
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REFERENCE DESIGNS Download
Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives
TIDA-00171 This evaluation kit and reference design implements the AMC130x reinforced isolated delta-sigma modulators along with integrated Sinc filters in the C2000™ TMS320F28377D Delfino™ microcontroller. The design provides an ability to evaluate the  performance of these measurements: three motor (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives Using AM437x
TIDA-00209 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 Download
SONAR Receiver Path Sub-System Reference Design Using an 8 Channel Analog Front End
TIDA-00419 The TIDA-00419 TI Design is a demonstration of a SONAR receive path sub-system using the integrated analog front end (AFE) AFE5809. The AFE5809 features 8 channels of analog signal conditioning  (LNA+VCAT+PGA) and Digital Processing (ADC+Digital Demodulator) that brings a high level of system (...)
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REFERENCE DESIGNS Download
Level Translation: Dual to Single Supply Amp, ±15V to 5V
TIPD148 Translating a ±15V signal to a single supply 5V signal for use with an ADC is a common circuit requirement.  This Dual Supply to Single Supply Amplifier circuit design translates a ±15V signal to a 0V to 5V signal.  The output of this design will not be outside of 0-5V (...)
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Design files
REFERENCE DESIGNS Download
Noise Measurement Post-Amp for Oscilloscope or Spectrum Analyzer
TIPD147 In some cases a scope or spectrum analyzer does not have the range required to measure very small noise levels.  This noise measurement post-amp boosts the output noise of the device under test (DUT) to allow for measurement with standard test equipment. The key requirements of this circuit is (...)
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Design files
REFERENCE DESIGNS Download
Op Amp with Single Discrete Bipolar Transistor Output Drive
TIPD146 Driving a low resistance load with a precision amplifier is an important requirement for many systems.  This function can be achieved with power op amps, but cost may be prohibitive.  This TI Precision design shows how to achieve high output drive capability using a precision (...)
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Design files

CAD/CAE symbols

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

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