INA2126

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Dual 36V microPower (175-µA), 250-µV offset, precision instrumentation amplifier

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Product details

Parameters

Number of channels (#) 2 Vs (Max) (V) 36 Vs (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 250 Gain (Min) (V/V) 5 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 35 CMRR (Min) (dB) 83 Input offset drift (+/-) (Max) (uV/C) 3 Input bias current (+/-) (Max) (nA) 25 Iq (Typ) (mA) 0.175 Bandwidth at min gain (Typ) (MHz) 0.2 Gain error (+/-) (Max) (%) 0.18 Operating temperature range (C) -40 to 85 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.7 Gain non-linearity (+/-) (Max) (%) 0.012 open-in-new Find other Instrumentation amplifiers

Package | Pins | Size

SOIC (D) 16 59 mm² 9.9 x 6 SSOP (DBQ) 16 29 mm² 4.9 x 6 open-in-new Find other Instrumentation amplifiers

Features

  • Low Quiescent Current: 175 µA/channel
  • Wide Supply Range: ±1.35 V to ±18 V
  • Low Offset Voltage: 250-µV Maximum
  • Low Offset Drift: 3-µV/°C Maximum
  • Low Noise: 35 nV/√Hz
  • Low Input Bias Current: 25-nA Maximum
  • 8-Pin PDIP, SOIC, VSSOP Surface-Mount Dual:
    16-Pin PDIP, SOIC, SSOP
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Description

The INA126 and INA2126 are precision instrumentation amplifiers for accurate, low noise differential-signal acquisition. Their two-op-amp design provides excellent performance with low quiescent current (175 µA/channel). Combined with a wide operating voltage range of ±1.35 V to ±18 V, makes the INAx126 ideal for portable instrumentation and data acquisition systems.

Gain can be set from 5 V/V to 10000 V/V with a single external resistor. Laser-trimmed input circuitry provides low offset voltage (250-µV maximum), low offset voltage drift (3-µV/°C maximum), and excellent common-mode rejection.

Single version package options include 8-pin plastic PDIP, SOIC-8, and fine-pitch VSSOP-8 surface-mount. Dual version is available in 16-pin plastic PDIP, SOIC-8, and the space-saving, fine-pitch SSOP-16 surface-mount. All are specified for the –40°C to +85°C industrial temperature range.

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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 5
Type Title Date
* Datasheet INAx126 MicroPower Instrumentation Amplifier Single and Dual Versions datasheet (Rev. B) Dec. 31, 2015
Technical articles What is an instrumentation amplifier? Aug. 09, 2019
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical articles How to layout a PCB for an instrumentation amplifier Oct. 14, 2016
Technical articles Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) Nov. 25, 2013

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SBOM486.TSC (85 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM487.ZIP (38 KB) - PSpice Model
SIMULATION MODELS Download
SBOM488.ZIP (3 KB) - TINA-TI Spice Model
SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
SIMULATION TOOLS Download
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
CALCULATION TOOLS Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
CALCULATION TOOLS Download
Common-Mode Input Range Calculator for Instrumentation Amplifiers
INA-CMV-CALC The Common-Mode Input Range Calculator is tool for quickly generating plots of an instrumentation amplifier’s common-mode input range vs output. The tool is compatible with both 2-amp and 3-amp instrumentation amplifiers utilizing any supply range.

The Common-Mode Input Range Calculator is pre-loaded (...)

Features
  • Preloaded with 20 of TI’s most popular instrumentation amplifier specifications
  • Customizable supply, gain, and voltage reference options
  • Calculator displays output limitations graphically and numerically

CAD/CAE symbols

Package Pins Download
SOIC (D) 16 View options
SSOP (DBQ) 16 View options

Ordering & quality

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