Product details

Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 40 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Rail-to-rail In, Out GBW (Typ) (MHz) 1.1 Slew rate (Typ) (V/us) 4.5 Vos (offset voltage @ 25 C) (Max) (mV) 1.5 Iq per channel (Typ) (mA) 0.12 Vn at 1 kHz (Typ) (nV/rtHz) 30 Rating Catalog Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.6 Features EMI Hardened, High Cload Drive, MUX Friendly, Shutdown, Small Size CMRR (Typ) (dB) 115 Output current (Typ) (mA) 80 Architecture CMOS
Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 40 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Rail-to-rail In, Out GBW (Typ) (MHz) 1.1 Slew rate (Typ) (V/us) 4.5 Vos (offset voltage @ 25 C) (Max) (mV) 1.5 Iq per channel (Typ) (mA) 0.12 Vn at 1 kHz (Typ) (nV/rtHz) 30 Rating Catalog Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.6 Features EMI Hardened, High Cload Drive, MUX Friendly, Shutdown, Small Size CMRR (Typ) (dB) 115 Output current (Typ) (mA) 80 Architecture CMOS
SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23-THN (DDF) 8 8 mm² 2.9 x 2.8 TSSOP (PW) 8 19 mm² 3 x 6.4 VSSOP (DGK) 8 15 mm² 3 x 4.9 VSSOP (DGS) 10 9 mm² 3 x 3 WSON (DSG) 8 4 mm² 2 x 2 X2QFN (RUG) 10 3 mm² 1.5 x 2
  • Low offset voltage: ±300 µV
  • Low offset voltage drift: ±0.6 µV/°C
  • Low noise: 30 nV/√Hz at 1 kHz
  • High common-mode rejection: 115 dB
  • Low bias current: ±10 pA
  • Rail-to-rail input and output
  • MUX-friendly/comparator inputs
    • Amplifier operates with differential inputs up to supply rail
    • Amplifier can be used in open-loop or as comparator
  • Wide bandwidth: 1.1-MHz GBW
  • High slew rate: 4.5 V/µs
  • Low quiescent current: 120 µA per amplifier
  • Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
  • Robust EMIRR performance: 78 dB at 1.8 GHz
  • Differential and common-mode input voltage range to supply rail
  • Low offset voltage: ±300 µV
  • Low offset voltage drift: ±0.6 µV/°C
  • Low noise: 30 nV/√Hz at 1 kHz
  • High common-mode rejection: 115 dB
  • Low bias current: ±10 pA
  • Rail-to-rail input and output
  • MUX-friendly/comparator inputs
    • Amplifier operates with differential inputs up to supply rail
    • Amplifier can be used in open-loop or as comparator
  • Wide bandwidth: 1.1-MHz GBW
  • High slew rate: 4.5 V/µs
  • Low quiescent current: 120 µA per amplifier
  • Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
  • Robust EMIRR performance: 78 dB at 1.8 GHz
  • Differential and common-mode input voltage range to supply rail

The OPAx990 family (OPA990, OPA2990, and OPA4990) is a family of high voltage (40 V) general purpose operational amplifiers. These devices offer excellent DC precision and AC performance, including rail-to-rail input/output, low offset (±300 µV, typ), and low offset drift (±0.6 µV/°C, typ).

Unique features such as differential and common-mode input voltage range to the supply rail, high short-circuit current (±80 mA), high slew rate (4.5 V/µs), and shutdown make the OPAx990 an extremely flexible, robust, and high-performance op amp for high-voltage industrial applications.

The OPAx990 family of op amps is available in micro-size packages (such as X2QFN, WSON, and SOT-553), as well as standard packages (such as SOT-23, SOIC, and TSSOP), and is specified from –40°C to 125°C.

The OPAx990 family (OPA990, OPA2990, and OPA4990) is a family of high voltage (40 V) general purpose operational amplifiers. These devices offer excellent DC precision and AC performance, including rail-to-rail input/output, low offset (±300 µV, typ), and low offset drift (±0.6 µV/°C, typ).

Unique features such as differential and common-mode input voltage range to the supply rail, high short-circuit current (±80 mA), high slew rate (4.5 V/µs), and shutdown make the OPAx990 an extremely flexible, robust, and high-performance op amp for high-voltage industrial applications.

The OPAx990 family of op amps is available in micro-size packages (such as X2QFN, WSON, and SOT-553), as well as standard packages (such as SOT-23, SOIC, and TSSOP), and is specified from –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet OPAx990 40-V Rail-to-Rail Input/Output, Low Offset Voltage, Low Power Op Amp datasheet (Rev. I) 13 Aug 2021
Application note Using An Op Amp for High-Side Current Sensing (Rev. A) 07 Dec 2021
Application note Circuit for detecting input floating on ADS8681 ADC 31 Mar 2021
Third party documents Programmable analog output circuit maximizes industrial system flexibility 01 Feb 2021
Application note MUX-Friendly, Precision Operational Amplifiers (Rev. B) 17 Dec 2020
Application note AN-31 Amplifier Circuit Collection (Rev. D) 21 Oct 2020
Technical article What is an op amp? 21 Jan 2020
Technical article Simplify your bill of materials with high-voltage amplifiers 18 Apr 2019
Application note Using an Operational Amplifier as a Low Cost Multiplexer (Rev. A) 09 Apr 2019
Application note High-side current-sensing circuit design (Rev. A) 13 Feb 2019
Analog design journal Second-sourcing options for small-package amplifiers 26 Mar 2018
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018

Design & development

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

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

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 (...)

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Evaluation board

DUAL-DIYAMP-EVM — Dual Channel Universal Do-It-Yourself (DIY) Amplifier Circuit Evaluation Module

The DUAL-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 designed specifically for dual package op amps in the (...)
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Evaluation board

SMALL-AMP-DIP-EVM — SMALL-AMP-DIP-EVM

The Small-Amp-DIP-EVM speeds up small package op amp prototyping by providing a fast and easy way to interface with many industry-standard small-size packages. The Small-Amp-DIP-EVM supports 8 small package options including: DPW-5 (X2SON), DSG-8 (WSON), DCN-8 (SOT), DDF-8 (SOT), RUG-10 (X2QFN), (...)
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Simulation model

OPA2990 TINA-TI Reference Design (Rev. A)

SBOMAN6A.ZIP (18 KB) - TINA-TI Reference Design
Simulation model

OPA2990 PSpice Model (Rev. C)

SBOMAN7C.ZIP (29 KB) - PSpice Model
Simulation model

OPA2990 TINA-TI SPICE Model (Rev. A)

SBOMAN9A.ZIP (4 KB) - TINA-TI Spice Model
Simulation model

OPA2990S TINA-TI Reference Design

SBOMB44.TSC (61 KB) - TINA-TI Reference Design
Simulation model

OPA2990S TINA-TI SPICE Model

SBOMB45.ZIP (4 KB) - TINA-TI Spice Model
Simulation model

OPA2990S PSpice Model

SBOMB46.ZIP (3 KB) - PSpice Model
Simulation model

Collection of test circuits in TINA-TI to accompany AN1516 (Rev. A)

SBOMBI0A.ZIP (1293 KB) - TINA-TI Reference Design
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 (...)
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 (...)
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 op-amp gain with feedback (...)
Design tool

CIRCUIT060005 — High-side current sensing with discrete difference amplifier circuit

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 (...)
Design tool

CIRCUIT060013 — Inverting amplifier with T-network feedback circuit

This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
Design tool

CIRCUIT060045 — Improved howland current pump with buffer circuit

The “improved” Howland current pump is a circuit that uses a difference amplifier to impose a voltage across a shunt resistor (Rs), creating a voltage-controlled bipolar (source or sink) current source capable of driving a wide range of load resistance. See the AN-1515 a comprehensive study of the (...)
Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
Design tool

Simulation for Current Source in AN-31

SBOC559.ZIP (6 KB)
Design tool

Simulation for AC to DC Converter in AN-31

SBOC571.ZIP (6 KB)
Design tool

Simulation for Current Monitor in AN-31

SBOC584.ZIP (5 KB)
Design tool

Simulation for Power Booster in AN-31

SBOC586.ZIP (6 KB)
Design tool

Simulation for Multiplier/Divider in AN-31

SBOC593.ZIP (7 KB)
Reference designs

TIDA-010065 — High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design

This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom (...)
Package Pins Download
SOIC (D) 8 View options
SOT-23-THIN (DDF) 8 View options
TSSOP (PW) 8 View options
VSSOP (DGK) 8 View options
VSSOP (DGS) 10 View options
WSON (DSG) 8 View options
X2QFN (RUG) 10 View options

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