Product details

Number of channels (#) 4 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) 0.003 GBW (Typ) (MHz) 14 Features EMI Hardened, High Cload Drive, Zero Drift Slew rate (Typ) (V/us) 20 Rail-to-rail Out Offset drift (Typ) (uV/C) 0.005 Iq per channel (Typ) (mA) 1.3 Vn at 1 kHz (Typ) (nV/rtHz) 5.2 CMRR (Typ) (dB) 168 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 500 Output current (Typ) (mA) 65 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.00006
Number of channels (#) 4 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) 0.003 GBW (Typ) (MHz) 14 Features EMI Hardened, High Cload Drive, Zero Drift Slew rate (Typ) (V/us) 20 Rail-to-rail Out Offset drift (Typ) (uV/C) 0.005 Iq per channel (Typ) (mA) 1.3 Vn at 1 kHz (Typ) (nV/rtHz) 5.2 CMRR (Typ) (dB) 168 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 500 Output current (Typ) (mA) 65 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.00006
SOIC (D) 14 52 mm² 8.65 x 6 TSSOP (PW) 14 32 mm² 5 x 6.4
  • Ultra-high precision:
    • Zero-drift: 0.005 µV/°C (OPA189)
    • Ultra-low offset voltage: 3 µV maximum (OPA189)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.2 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.1 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 14 MHz
    • Slew rate: 20 V/µs
    • Fast settling: 10-V step, 0.01% in 1.1 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI/EMI filtered inputs
  • Wide supply range: 4.5 V to 36 V
  • Quiescent current: 1.7 mA (maximum)
  • Rail-to-rail output
  • Input includes negative rail
  • Ultra-high precision:
    • Zero-drift: 0.005 µV/°C (OPA189)
    • Ultra-low offset voltage: 3 µV maximum (OPA189)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.2 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.1 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 14 MHz
    • Slew rate: 20 V/µs
    • Fast settling: 10-V step, 0.01% in 1.1 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI/EMI filtered inputs
  • Wide supply range: 4.5 V to 36 V
  • Quiescent current: 1.7 mA (maximum)
  • Rail-to-rail output
  • Input includes negative rail

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the single-channel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages, which improves settling performance in multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.

All versions are specified from –40°C to +125°C.

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the single-channel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages, which improves settling performance in multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.

All versions are specified from –40°C to +125°C.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers datasheet (Rev. I) 08 Sep 2021
Application note How to Select Amplifiers for Pressure Transmitter Applications (Rev. A) 27 Jul 2021
Application note MUX-Friendly, Precision Operational Amplifiers (Rev. B) 17 Dec 2020
Technical article “Trust, but verify” SPICE model accuracy, part 5: input offset voltage and open-loop gain 20 Nov 2017
Technical article Trimmed or chopped: How do you like your op amp? 07 Apr 2015
Technical article Let’s take this driver out for a spin 10 May 2013

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 (...)

In stock
Limit: 5
Evaluation board

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

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 (...)
Simulation model

OPA189 PSpice Model (Rev. C)

SBOMAE9C.ZIP (14 KB) - PSpice Model
Simulation model

OPA189 TINA-TI Reference Design (Rev. C)

SBOMAF0C.TSC (340 KB) - TINA-TI Reference Design
Simulation model

OPA189 TINA-TI Spice Model (Rev. D)

SBOMAF1D.ZIP (8 KB) - TINA-TI Spice Model
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 (...)
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:
  • 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 tool

CIRCUIT060001 — Single-supply, low-side, unidirectional current-sensing circuit

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.
Design tool

CIRCUIT060002 — Temperature sensing with NTC thermistor circuit

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 (...)
Design tool

CIRCUIT060003 — Temperature sensing with PTC thermistor circuit

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 (...)
Design tool

CIRCUIT060004 — Low-noise and long-range PIR sensor conditioner circuit

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 (...)
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 the load.
Design tool

CIRCUIT060006 — Bridge amplifier circuit

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 (...)
Design tool

CIRCUIT060007 — Low-side, bidirectional current-sensing circuit

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 (...)
Design tool

CIRCUIT060008 — Full-wave rectifier circuit

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.
Design tool

CIRCUIT060009 — Half-wave rectifier circuit

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 (...)
Design tool

CIRCUIT060010 — PWM generator circuit

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 (...)
Design tool

CIRCUIT060011 — Single-supply, second-order, multiple feedback high-pass filter circuit

The multiple-feedback (MFB) high-pass (HP) filter is a 2nd-order active filter. Vref provides a DC offset to accommodate for single-supply applications. This HP filter inverts the signal (Gain = –1 V/V) for frequencies in the pass band. An MFB filter is preferable when the gain is high or when (...)
Design tool

CIRCUIT060012 — Single-supply, 2nd-order, multiple feedback low-pass filter circuit

The multiple-feedback (MFB) low-pass filter (LP filter) is a second-order active filter. Vref provides a DC offset to accommodate for single-supply applications. This LP filter inverts the signal (Gain = –1 V/V) for frequencies in the pass band. An MFB filter is preferable when the gain is (...)
Design tool

CIRCUIT060014 — Voltage-to-current (V-I) converter circuit with MOSFET

This single-supply, low-side, V-I converter delivers a well-regulated current to a load which can be connected to a voltage greater than the op amp supply voltage. The circuit accepts an input voltage between 0 V and 2 V and converts it to a current between 0 mA and 100 mA. The current is accurately (...)
Design tool

CIRCUIT060016 — Non-inverting microphone pre-amplifier circuit

This circuit uses a non–inverting amplifier circuit configuration to amplify the microphone output signal. This circuit has very good magnitude flatness and exhibits minor frequency response deviations over the audio frequency range. The circuit is designed to be operated from a single 5-V supply.
Design tool

CIRCUIT060017 — Dual-supply, discrete, programmable gain amplifier circuit

This circuit provides programmable, non-inverting gains ranging from 6 dB (2 V/V) to 60 dB (1000 V/V) using a variable input resistance. The design maintains the same cutoff frequency over the gain range.
Design tool

CIRCUIT060018 — Photodiode amplifier circuit

This circuit consists of an op amp configured as a transimpedance amplifier for amplifying the light dependent current of a photodiode.
Design tool

CIRCUIT060019 — Inverting op amp with non-inverting positive reference voltage circuit

This design uses an inverting amplifier with a non-inverting positive reference voltage to translate an input signal of –1 V to 2 V to an output voltage of 0.05 V to 4.95 V. This circuit can be used to translate a sensor output voltage with a positive slope and negative offset to a usable ADC (...)
Design tool

CIRCUIT060020 — Inverting amplifier circuit

This design inverts the input signal, Vi , and applies a signal gain of –2 V/V. The input signal typically comes from a low-impedance source because the input impedance of this circuit is determined by the input resistor, R1. The common-mode voltage of an inverting amplifier is equal to the (...)
Package Pins Download
SOIC (D) 14 View options
TSSOP (PW) 14 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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