Precision (200µV offset), 2MHz, 88 dB CMRR, low power, e-trim™ difference amplifier


Product details


Number of channels (#) 1 Vs (Min) (V) 4.5 Vs (Max) (V) 36 CMRR (Min) (dB) 88 Common mode input low (Min) (V) -54.3 Common mode input high (Max) (V) 54 Input offset (+/-) (Max) (uV) 200 Iq (Typ) (mA) 1.1 Small signal bandwidth (Typ) (MHz) 2 Slew rate (Typ) (V/us) 18 Gain (Min) (V/V) 0.5 Gain (Max) (V/V) 2 Gain error (+/-) (Max) (%) 0.03 Rating Catalog Operating temperature range (C) -40 to 125 Gain drift (Max) (ppm/C) 1 open-in-new Find other Difference amplifiers

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Difference amplifiers


  • Low offset voltage: 200 µV (maximum)
  • Low offset voltage drift: ±5 µV/°C (maximum)
  • Low noise: 18 nV/√Hz at 1 kHz
  • Low gain error: ±0.03% (maximum)
  • High common-mode rejection: 88 dB (minimum)
  • Wide bandwidth: 2-MHz GBW
  • Low quiescent current: 1.1 mA per amplifier
  • High slew rate: 18 V/µs
  • High capacitive load drive capability: 500 pF
  • Wide supply range:
    • Single-supply: 4.5 V to 36 V
    • Dual-supply: ±2.25 V to ±18 V
  • Specified temperature range:
    –40°C to +125°C
  • 8-Pin VSSOP package

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The INA597 is a low-power, wide-bandwidth, difference amplifier for cost-sensitive applications. The INA597 consists of a precision operational amplifier (op amp) and a precision resistor network. Excellent tracking of resistors maintains gain accuracy and common-mode rejection over temperature. Unique features such as low offset (200 µV, maximum), low offset drift (5 µV/°C maximum) high slew rate (18 V/µs), and high capacitive load drive of up to 500 pF make the INA597 a robust, high-performance difference amplifier for high-voltage industrial applications.

The common-mode range of the internal op amp extends to the negative supply, and enables the device to operate in single-supply applications. The device operates on single (4.5 V to 36 V) or dual supplies (±2.25 V to ±18 V).

The difference amplifier is the foundation of many commonly used circuits. The INA597 provides this circuit function without using an expensive precision resistor network.

The INA597 is available in 8-pin VSSOP surface-mount package, and is specified for operation over the industrial temperature range of –40°C to +125°C.




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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet INA597 High-Precision, Wide-Bandwidth e-trim™ Difference Amplifier datasheet Aug. 29, 2019
Application notes Analysis of Improved Howland Current Pump Configurations Oct. 07, 2020
Application notes Precision signal-conditioning solutions for motor control with position feedback Jun. 14, 2019
Application notes High-side current sources for industrial applications Mar. 12, 2019
Application notes Level Shifting Signals With Differential Amplifiers (Rev. A) Apr. 02, 2018
Application notes Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. A) Jul. 20, 2017
Technical articles Difference Amplifiers—the need for well-matched resistors Apr. 24, 2012
Application notes Extending the Common-Mode Range of Difference Amplifiers Sep. 27, 2000

Design & development

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Hardware development

document-generic User guide
Be confident in your choice of difference amplifier and easily evaluate and compare devices with the DIFFAMP-EVM. With support for a variety of configurations, this module can be tailored towards your desired application for a reliable evaluation. A DIP adapter section is provided to enable (...)
  • Intuitive jumper configuration as difference amplifier, precision gain amplifier, or current source
  • Socketed IC connection for multi-package evaluation and easy comparison between devices
  • 6 DIP adapter boards supporting SOIC and MSOP packages
  • Onboard reference buffer for single supply operation
document-generic User guide

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 (...)

  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost

Design tools & simulation

SBOMB10.ZIP (170 KB) - PSpice Model
SBOMB11.ZIP (7 KB) - TINA-TI Spice Model
SBOMB12.TSC (278 KB) - TINA-TI Reference Design
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 (...)
  • 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
  • (...)
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

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