Product details

Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.7 Vos (offset voltage @ 25 C) (Max) (mV) 0.045 GBW (Typ) (MHz) 1 Features e-Trim™ Slew rate (Typ) (V/us) 1 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 1 Iq per channel (Typ) (mA) 0.024 Vn at 1 kHz (Typ) (nV/rtHz) 60 CMRR (Typ) (dB) 121 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 0.8 Output current (Typ) (mA) 60 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.002
Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.7 Vos (offset voltage @ 25 C) (Max) (mV) 0.045 GBW (Typ) (MHz) 1 Features e-Trim™ Slew rate (Typ) (V/us) 1 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 1 Iq per channel (Typ) (mA) 0.024 Vn at 1 kHz (Typ) (nV/rtHz) 60 CMRR (Typ) (dB) 121 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 0.8 Output current (Typ) (mA) 60 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.002
DSBGA (YBJ) 9 1 mm² 1.2 x 1.2
  • Low IQ: 24 µA
  • Gain bandwidth product: 1 MHz
  • Low input bias current: 10 fA
  • Low offset voltage: ±45 µV (maximum)
  • Low drift: ±1.2 µV/°C
  • Low supply voltage operation: 1.7 V to 5.5 V
  • Input common mode range ±100 mV beyond rail
  • Fast slew rate: 1 V/µs
  • High load capacitance drive
  • High output current drive: 60 mA
  • Rail-to-rail output
  • EMI/RFI filtered inputs
  • Small package options: SC-70, DSBGA
  • Low IQ: 24 µA
  • Gain bandwidth product: 1 MHz
  • Low input bias current: 10 fA
  • Low offset voltage: ±45 µV (maximum)
  • Low drift: ±1.2 µV/°C
  • Low supply voltage operation: 1.7 V to 5.5 V
  • Input common mode range ±100 mV beyond rail
  • Fast slew rate: 1 V/µs
  • High load capacitance drive
  • High output current drive: 60 mA
  • Rail-to-rail output
  • EMI/RFI filtered inputs
  • Small package options: SC-70, DSBGA

The OPA391 and OPA2391 ( OPAx391) feature a unique combination of high bandwidth (1 MHz) along with very-low quiescent current (24 µA) in high-precision amplifiers. These features combined with rail-to-rail input and output make these devices an exceptional choice in high-gain, low-power applications. Ultra-low input bias current of 10 fA, only 45 µV of offset (maximum), and 1.2 µV/°C of drift over temperature help maintain high precision in ratiometric and amperometric sensor front ends that have demanding low-power requirements.

The OPAx391 use Texas Instrument’s proprietary e‑trim™ operational amplifier technology, enabling a unique combination of ultra-low offset and low input offset drift without the need for any input switching or auto-zero techniques. The CMOS-based technology platform also features a modern, robust output stage design that is tolerant of high output capacitance, alleviating stability problems that are common in typical low-power amplifiers.

The OPA391 and OPA2391 ( OPAx391) feature a unique combination of high bandwidth (1 MHz) along with very-low quiescent current (24 µA) in high-precision amplifiers. These features combined with rail-to-rail input and output make these devices an exceptional choice in high-gain, low-power applications. Ultra-low input bias current of 10 fA, only 45 µV of offset (maximum), and 1.2 µV/°C of drift over temperature help maintain high precision in ratiometric and amperometric sensor front ends that have demanding low-power requirements.

The OPAx391 use Texas Instrument’s proprietary e‑trim™ operational amplifier technology, enabling a unique combination of ultra-low offset and low input offset drift without the need for any input switching or auto-zero techniques. The CMOS-based technology platform also features a modern, robust output stage design that is tolerant of high output capacitance, alleviating stability problems that are common in typical low-power amplifiers.

Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet OPAx391 Precision, Ultra-Low IQ, Low Offset Voltage, e-trim™ Operational Amplifiers datasheet (Rev. C) PDF | HTML 19 Dec 2022
Certificate OPA2391DSBGAEVM EU RoHS Declaration of Conformity (DoC) 17 Oct 2022
EVM User's guide OPA2391DSBGAEVM User's Guide PDF | HTML 11 Oct 2022

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 (...)

User guide: PDF
Not available on TI.com
Evaluation board

OPA2391DSBGAEVM — OPA2391 evaluation module for low-offset (45 μV) low-Iq (24 μV) op amp in DSBGA package

This evaluation module allows a user to plug the OPA2391YBJ into an existing socketed PDIP test platform to evaluate the OPA2391. This can be used in either a system evaluation or for stand-alone evaluation of the OPA2391. In addition, the enable pin is brought out to a test point on the top layer (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

OPAx391 TINA-TI Reference Design (Rev. A)

SBOMBJ9A.TSC (333 KB) - TINA-TI Reference Design
Simulation model

OPAx391 TINA-TI SPICE Model (Rev. A)

SBOMBK0A.ZIP (11 KB) - TINA-TI Spice Model
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 operational-amplifier (...)
lock = Requires export approval (1 minute)
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, (...)
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 (...)
User guide: PDF
Package Pins Download
DSBGA (YBJ) 9 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

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

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