Top

Product details

Parameters

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Rail-to-rail In, Out GBW (Typ) (MHz) 20 Slew rate (Typ) (V/us) 10 Vos (offset voltage @ 25 C) (Max) (mV) 2 Iq per channel (Typ) (mA) 1.6 Vn at 1 kHz (Typ) (nV/rtHz) 8.5 Rating Catalog Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 1.8 Features Shutdown Input bias current (Max) (pA) 10 CMRR (Typ) (dB) 100 Output current (Typ) (mA) 65 Architecture CMOS open-in-new Find other General-purpose op amps

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other General-purpose op amps

Features

  • Gain Bandwidth: 20 MHz
  • Low Noise: 8.5 nV√Hz at 1 kHz
  • Slew Rate: 10 V/µs
  • Low THD+N: 0.0005%
  • Rail-to-Rail I/O
  • Offset Voltage: 2 mV (maximum)
  • Supply Voltage: 1.8 V to 5.5 V
  • Supply Current: 1.5 mA/ch
    • Shutdown: 0.1 µA/ch
  • Unity-Gain Stable
  • Small Packages:
    • SOT-23, SON, VSSOP, TSSOP
open-in-new Find other General-purpose op amps

Description

The OPAx322x series consists of single, dual, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs and outputs optimized for low-power, single-supply applications. Specified over a wide supply range of 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very low noise (8.5 nV√Hz at 1 kHz), high-gain bandwidth (20 MHz), and fast slew rate (10 V/µs) make the OPAx322x family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPAx322x series is also excellent for consumer audio applications, particularly for single-supply systems.

The OPAx322S models include a shutdown mode that allow the amplifiers to be switched from normal operation to a standby current that is typically less than 0.1 µA.

The OPA322 (single version) is available in 5-pin SOT-23 and 6-pin SOT-23, while the OPA2322 (dual version) is offered in 8-pin VSSOP, 10-pin VSSOP, 8-pin SOIC, and 8-pin SON packages. The quad version OPA4322 comes in 14-pin TSSOP and 16-pin TSSOP packages. All versions are specified for operation from –40°C to +125°C.

open-in-new Find other General-purpose op amps
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 12
Type Title Date
* Datasheet OPAx322x 20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier With Shutdown datasheet (Rev. F) Dec. 23, 2016
Technical articles What is an op amp? Jan. 21, 2020
Application notes Photodiode amplifier circuit (Rev. A) Feb. 04, 2019
Application notes Half-wave rectifier circuit (Rev. A) Feb. 01, 2019
White papers Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) Nov. 30, 2018
Technical articles Designing tiny microphone circuits with the industry’s smallest op amp Apr. 12, 2018
Technical articles How to lay out a PCB for high-performance, low-side current-sensing designs Feb. 06, 2018
Technical articles Low-side current sensing for high-performance cost-sensitive applications Jan. 22, 2018
Application notes Discrete wide bandwidth INA circuit Dec. 30, 2017
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application notes Zero-crossover Amplifiers: Features and Benefits (Rev. A) Feb. 09, 2017
Application notes OPA322, OPA2322, OPA4322 EMIR Immunity Performance Nov. 15, 2012

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
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 (...)

Design tools & simulation

SIMULATION MODELS Download
SBOM454B.ZIP (4 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM455B.ZIP (13 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM888A.ZIP (6 KB) - PSpice Model
SIMULATION MODELS Download
SBOMAQ0.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SBOMAQ1.ZIP (14 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOMAQ2.ZIP (5 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOMAU6.ZIP (203 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
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
SBOC509.ZIP (363 KB)
DESIGN TOOLS Download
SBOC517.ZIP (258 KB)

Reference designs

REFERENCE DESIGNS Download
Differential Signal Conditioning Circuit for Current and Voltage Measurement Using Fluxgate Sensors
TIDA-00201 This design provides a 4-channel signal conditioning solution for differential ADCs integrated into a microcontroller measuring motor current using fluxgate sensors. Also provided is an alternative measurement circuit with external differential SAR ADCs as well as circuits for high-speed overcurrent (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Single-Ended Signal Conditioning Circuit for Current and Voltage Measurement Using Fluxgate Sensors
TIDA-00208 This design provides a 4-channel signal conditioning solution for single-ended SAR ADCs integrated into a microcontroller measuring motor current using fluxgate sensors. Also provided is an alternative measurement circuit with external SAR ADCs as well as circuits for high-speed overcurrent and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator
TIDA-01214 — This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time performance (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Transient and Digital Fault Recorder AFE Using Differential Amplifiers and HS ADC Reference Design
TIDA-00499 While Digital Fault Recorders (DFR) can detect transients in 17/20 μs at 60/50 Hz, Transient Recorders capture disturbances that can peak and decay well within a microsecond. This TI Design demonstrates the capturing of transient inputs at up to 1 MHz for Digital Fault Recorder and 25 MHz for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Audio Communication With Power Over Ethernet (PoE) Reference Design
TIDM-TM4C129POEAUDIO — This design uses Texas Instrument's high performance TM4C129x microcontrollers (MCUs) with integrated Ethernet PHY to capture, exchange and playback audio efficiently with power supplied over the network (PoE solution) instead of separate external power sources. The application uses TivaWare (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design for Interfacing Current Output Hall Sensors and CTs with Differential ADC/MCU
TIDA-00368 The TIDA-00368 reference design provides a reference solution for interfacing current output Hall sensors and current transformers to differential ADC (standalone and integrated into MCU). The differential signal conditioning circuit is designed to measure motor current with an accuracy of (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options
SOT-23 (DBV) 6 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos