SBOS027A September 2000  – January 2016 INA118

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
    4. 7.4Device Functional Modes
      1. 7.4.1Noise Performance
      2. 7.4.2Input Common-Mode Range
      3. 7.4.3Input Protection
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. 8.2.2.1Setting the Gain
        2. 8.2.2.2Dynamic Performance
        3. 8.2.2.3Offset Trimming
        4. 8.2.2.4Input Bias Current Return Path
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
    1. 9.1Low Voltage Operation
    2. 9.2Single Supply Operation
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Development Support
    2. 11.2Documentation Support
      1. 11.2.1Related Documentation
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

1 Features

  • Low Offset Voltage: 50-µV Maximum
  • Low Drift: 0.5-µV/°C Maximum
  • Low Input Bias Current: 5-nA Maximum
  • High CMR: 110-dB Minimum
  • Inputs Protected to ±40 V
  • Wide Supply Range: ±1.35 to ±18 V
  • Low Quiescent Current: 350-µA
  • 8-Pin Plastic DIP, SO-8

2 Applications

  • Bridge Amplifiers
  • Thermocouple Amplifiers
  • RTD Sensor Amplifiers
  • Medical Instrumentation
  • Data Acquisition

3 Description

The INA118 is a low-power, general-purpose instrumentation amplifier offering excellent accuracy. The device's versatile, 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth, even at high gain (70 kHz at G = 100).

A single external resistor sets any gain from 1 to 10000. Internal input protection can withstand up to ±40 V without damage.

The INA118 is laser-trimmed for low offset voltage (50 µV), drift (0.5 µV/°C), and high common-mode rejection (110 dB at G = 1000). The INA118 operates with power supplies as low as ±1.35 V, and quiescent current is only 350 µA, making the device ideal for battery-operated systems.

The INA118 is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
INA118SOIC (8)3.91 mm × 4.90 mm
PDIP (8)6.35 mm × 9.81 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

INA118 sbos027_sch.gif