Home Amplifiers Operational amplifiers (op amps) Precision op amps (Vos<1mV)
Home
Amplifiers
Operational amplifiers (op amps)
Precision op amps (Vos<1mV)

OPA189

ACTIVE

Single, 14-MHz, mux-friendly, low-noise, zero-drift, RRO, CMOS precision operational amplifier

Order now
Data sheet

OPA189

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.003 GBW (typ) (MHz) 14 Features EMI Hardened, High Cload Drive, MUX Friendly, Zero Drift Slew rate (typ) (V/µs) 20 Rail-to-rail In to V-, Out Offset drift (typ) (µV/°C) 0.005 Iq per channel (typ) (mA) 1.3 Vn at 1 kHz (typ) (nV√Hz) 5.2 CMRR (typ) (dB) 168 Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 300 Iout (typ) (A) 0.065 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2.5 Output swing headroom (to negative supply) (typ) (V) 0.02 Output swing headroom (to positive supply) (typ) (V) -0.02 THD + N at 1 kHz (typ) (%) 0.00006
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.003 GBW (typ) (MHz) 14 Features EMI Hardened, High Cload Drive, MUX Friendly, Zero Drift Slew rate (typ) (V/µs) 20 Rail-to-rail In to V-, Out Offset drift (typ) (µV/°C) 0.005 Iq per channel (typ) (mA) 1.3 Vn at 1 kHz (typ) (nV√Hz) 5.2 CMRR (typ) (dB) 168 Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 300 Iout (typ) (A) 0.065 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2.5 Output swing headroom (to negative supply) (typ) (V) 0.02 Output swing headroom (to positive supply) (typ) (V) -0.02 THD + N at 1 kHz (typ) (%) 0.00006
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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.
filter Find other Precision op amps (Vos<1mV)
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
OPA182 ACTIVE Highest-precision, 36-V, 5-MHz, single, low-noise, zero-drift, MUX-friendly amplifier Lower power with lower offset voltage and drift

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 17
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) PDF | HTML 06 Oct 2021
White paper Optimizing Chopper Amplifier Accuracy PDF | HTML 27 Feb 2024
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. C) 18 Dec 2023
Application brief How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) PDF | HTML 14 Feb 2023
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. B) 05 Oct 2022
Application brief MUX-Friendly, Precision Operational Amplifiers (Rev. C) PDF | HTML 08 Feb 2022
Technical article How to achieve microvoltage-level precision in thermopile applications PDF | HTML 09 Dec 2021
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. C) PDF | HTML 13 Apr 2021
Application brief Zero-Drift Amplifiers: Features and Benefits (Rev. C) 28 Jan 2021
Application brief Minimize Errors in Weigh-Scales With Zero-Drift, EMI-Hardened, Precision Amps (Rev. A) PDF | HTML 08 Dec 2020
Application brief How to Select Precision Amplifiers for Semiconductor Testers (Rev. A) PDF | HTML 03 Dec 2020
Analog Design Journal Precision signal conditioning for safety-enabled AIMs in factory automation 30 Sep 2019
Application brief EMI-Hardened Op Amps Reduce Errors in EKGs (Rev. A) 21 Aug 2019
Application brief EMI-Hardened Op Amps Reduce Errors in Infusion Pumps (Rev. A) 21 Aug 2019
Application brief Green-Williams-Lis: Improved Op Amp Spice Model 28 Jan 2019
Application brief Multichannel Analog Input Modules for PLC Equipment 04 Jan 2019
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005

Design & development

Please view the Design & development section on a desktop.

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
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

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