SBOS062B September   2000  – December 2015 INA126 , INA2126

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information: INA126
    5. 6.5 Thermal Information: INA2126
    6. 6.6 Electrical Characteristics
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Single-Supply Operation
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting the Gain
        2. 8.2.2.2 Offset Trimming
        3. 8.2.2.3 Input Bias Current Return
        4. 8.2.2.4 Input Common-Mode Range
        5. 8.2.2.5 Input Protection
        6. 8.2.2.6 Channel Crosstalk—Dual Version
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
    1. 9.1 Low Voltage Operation
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 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

2 Applications

  • Industrial Sensor Amplifiers: Bridges, RTDs, Thermocouples
  • Physiological Amplifiers: ECGs, EEGs, EMGs
  • Multi-Channel Data Acquisition
  • Portable, Battery-Operated Systems

3 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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
INA126 PDIP (8) 6.35 mm × 9.81 mm
SOIC (8) 3.91 mm × 4.90 mm
VSSOP (8) 3.00 mm × 3.00 mm
INA2126 PDIP (16) 6.35 mm × 19.30 mm
SOIC (16) 3.91 mm × 9.90 mm
SSOP (16) 3.90 mm × 4.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.


Simplified Schematic: INA126

INA126 INA2126 sbos062_sch1.gif

Simplified Schematic: INA2126

INA126 INA2126 sbos062_sch2.gif