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INA105

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Precision Unity Gain Differential Amplifier

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Data sheet

INA105

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (min) (V) 10 Vs (max) (V) 36 CMRR (min) (dB) 86 Common-mode input low (min) (V) -20 Common-mode input high (max) (V) 20 Input offset (±) (max) (V) 0.00025 Iq (typ) (mA) 1.5 Slew rate (typ) (V/µs) 3 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1 Small-signal bandwidth (typ) (Hz) 1000000 Rating Catalog Operating temperature range (°C) -40 to 85 Gain drift (max) (ppm/°C) 1 Gain error (±) (max) (%) 0.01
Number of channels 1 Vs (min) (V) 10 Vs (max) (V) 36 CMRR (min) (dB) 86 Common-mode input low (min) (V) -20 Common-mode input high (max) (V) 20 Input offset (±) (max) (V) 0.00025 Iq (typ) (mA) 1.5 Slew rate (typ) (V/µs) 3 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1 Small-signal bandwidth (typ) (Hz) 1000000 Rating Catalog Operating temperature range (°C) -40 to 85 Gain drift (max) (ppm/°C) 1 Gain error (±) (max) (%) 0.01
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 TO-CAN (LMC) 8 80.2816 mm² 8.96 x 8.96
  • CMR 86dB min OVER TEMPERATURE
  • GAIN ERROR: 0.01% max
  • NONLINEARITY: 0.001% max
  • NO EXTERNAL ADJUSTMENTS REQUIRED
  • EASY TO USE
  • COMPLETE SOLUTION
  • HIGHLY VERSATILE
  • LOW COST
  • PLASTIC DIP, TO-99 HERMETIC METAL, AND SO-8 SOIC PACKAGES
  • CMR 86dB min OVER TEMPERATURE
  • GAIN ERROR: 0.01% max
  • NONLINEARITY: 0.001% max
  • NO EXTERNAL ADJUSTMENTS REQUIRED
  • EASY TO USE
  • COMPLETE SOLUTION
  • HIGHLY VERSATILE
  • LOW COST
  • PLASTIC DIP, TO-99 HERMETIC METAL, AND SO-8 SOIC PACKAGES

The INA105 is a monolithic Gain = 1 differential amplifier consisting of a precision op amp and on-chip metal film resistors. The resistors are laser trimmed for accurate gain and high common-mode rejection. Excellent TCR tracking of the resistors maintains gain accuracy and common-mode rejection over temperature.

The differential amplifier is the foundation of many commonly used circuits. The INA105 provides this precision circuit function without using an expensive precision resistor network. The INA105 is available in 8-pin plastic DIP, SO-8 surface-mount and TO-99 metal packages.

The INA105 is a monolithic Gain = 1 differential amplifier consisting of a precision op amp and on-chip metal film resistors. The resistors are laser trimmed for accurate gain and high common-mode rejection. Excellent TCR tracking of the resistors maintains gain accuracy and common-mode rejection over temperature.

The differential amplifier is the foundation of many commonly used circuits. The INA105 provides this precision circuit function without using an expensive precision resistor network. The INA105 is available in 8-pin plastic DIP, SO-8 surface-mount and TO-99 metal packages.

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Technical documentation

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Type Title Date
* Data sheet Precision Unity Gain Differential Amplifier datasheet 27 Sep 2000
EVM User's guide Universal Difference Amplifier Evaluation Module User's Guide 16 Oct 2018
Application note Level Shifting Signals With Differential Amplifiers (Rev. A) 02 Apr 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Make a -10V to +10V Adjustable Precision Voltage Source (Rev. A) 18 May 2015
Technical article Difference Amplifiers—the need for well-matched resistors 25 Apr 2012
Application note AC Coupling Instrumentation and Difference Amplifiers 27 Sep 2000
Application note Boost Amplifier Output Swing With Simple Modification 27 Sep 2000
Application note Extending the Common-Mode Range of Difference Amplifiers 27 Sep 2000
Application note Implementation and Applications of Current Sources and Current Receivers 27 Sep 2000
Application note Simple Circuit Delivers 38Vp-p at 5A from 28V Unipolar Supply 27 Sep 2000
Application note Single-Supply Operation of Isolation Amplifiers 27 Sep 2000

Design & development

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

Evaluation board

DIFFAMP-EVM — Universal Difference Amplifier Evaluation Module

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 (...)
User guide: PDF
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Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP adapter evaluation module (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 (...)

User guide: PDF
Not available on TI.com
Simulation model

INA105 PSpice Model (Rev. B)

SBOM009B.ZIP (25 KB) - PSpice Model
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Simulation model

INA105 TINA-TI Reference Design (Rev. B)

SBOC233B.TSC (96 KB) - TINA-TI Reference Design
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Simulation model

INA105 TINA-TI Spice Model (Rev. A)

SBOM296A.ZIP (2 KB) - TINA-TI Spice Model
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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 (...)
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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
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PDIP (P) 8 View options
SOIC (D) 8 View options
TO-CAN (LMC) 8 View options
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