SBOS792 August 2017 INA828

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
      1. 7.3.1Setting the Gain
        1. 7.3.1.1Gain Drift
      2. 7.3.2EMI Rejection
      3. 7.3.3Input Common-Mode Range
      4. 7.3.4Input Protection
      5. 7.3.5Operating Voltage
    4. 7.4Device Functional Modes
  8. Application and Implementation
    1. 8.1Reference Terminal
    2. 8.2Input Bias Current Return Path
    3. 8.3PCB Assembly Effects on Precision
    4. 8.4Typical Application
      1. 8.4.1Design Requirements
      2. 8.4.2Detailed Design Procedure
      3. 8.4.3Application Curves
    5. 8.5Other Application Examples
      1. 8.5.1Resistance Temperature Detector Interface
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Documentation Support
      1. 11.1.1Related Documentation
    2. 11.2Receiving Notification of Documentation Updates
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Features

  • Precision Instrumentation Amplifier Evolution:
    • Second Generation: INA828
    • First Generation: INA128
  • Low Offset Voltage: 50 µV, MAX
  • Gain Drift: 5 ppm/°C (G = 1), 50 ppm/°C (G > 1)
  • Noise: 7 nV/√Hz
  • Bandwidth: 2.0 MHz (G = 1), 260 kHz (G = 100)
  • Stable with 1-nF capacitive loads
  • Inputs Protected Up to ±40 V
  • Common-Mode Rejection:
    • 110 dB, MIN (G = 10)
  • Power-Supply Rejection: 100 dB, MIN (G = 1)
  • Supply Current: 650 µA, MAX
  • 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
  • Package: 8-Pin SOIC

Applications

  • Industrial Process Controls
  • Circuit Breakers
  • Battery Testers
  • ECG Amplifiers
  • Power Automation
  • Medical Instrumentation
  • Portable Instrumentation

Description

The INA828 is a high-precision instrumentation amplifier that offers low power consumption and operates over a very wide single- or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent precision due to the use of new super-beta input transistors which provide exceptionally low input offset voltage, offset voltage drift, input bias current, and input voltage and current noise. Additional circuitry protects the inputs against overvoltage up to ±40 V.

The INA828 is optimized to provide excellent common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is well-suited for low-voltage operation from a 5-V single supply as well as dual supplies up to ±18 V. Finally, INA828 is available in an 8-pin SOIC package and specified over the –40°C to +125°C temperature range.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
INA828SOIC (8)4.90 mm × 3.91 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

INA828 Simplified Internal Schematic

INA828 FBD_02_SBOS792.gif

Typical Distribution of Input Offset Voltage Drift

INA828 C102_SBOS792.png