SBOS770A May 2017  – June 2017 INA826S

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. 7.3.1Inside the INA826S
      2. 7.3.2Setting the Gain
        1. 7.3.2.1Gain Drift
      3. 7.3.3Offset Trimming
      4. 7.3.4Input Common-Mode Range
      5. 7.3.5Input Protection
      6. 7.3.6Input Bias Current Return Path
      7. 7.3.7Reference Pin (REF)
      8. 7.3.8Shutdown (EN and ENREF) Pins
    4. 7.4Device Functional Modes
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
    1. 9.1Low-Voltage Operation
  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

  • Input Common-Mode Range: Includes V–
  • Common-Mode Rejection:
    • 104 dB (Min, G = 10)
    • 100 dB (Min at 5 kHz, G = 10)
  • Power-Supply Rejection: 100 dB (Min, G = 1)
  • Low Offset Voltage: 150 µV, max
  • Gain Drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1)
  • Noise: 18 nV/√Hz, G ≥ 100
  • Bandwidth: 1 MHz (G = 1), 60 kHz (G = 100)
  • Inputs Protected up to ±40 V
  • Rail-to-Rail Output
  • Supply Current: 200 µA
    • Shutdown Current: 2 µA
  • Supply Range:
    • Single Supply: 3 V to 36 V
    • Dual Supply: ±1.5 V to ±18 V
  • Specified Temperature Range:
    –40°C to +125°C
  • Packages: 3-mm × 3-mm VSON

Applications

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

Description

The INA826S device is a low-cost instrumentation amplifier that offers extremely low power consumption along with shutdown 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 stability over temperature, even at G > 1, as a result of the low gain drift of only 35 ppm/°C (max).

The INA826S is optimized to provide excellent common-mode rejection ratio of over 100 dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA826S is well-suited for low voltage operation from a 3-V single supply as well as dual supplies up to ±18 V.

Shutdown pins are provided to reduce supply current below 2 µA. Additional circuitry protects the inputs against overvoltage of up to ±40 V beyond the power supplies by limiting the input currents to less than 8 mA.

The INA826S is available in a 10-pin, 3-mm ×
3-mm VSON surface-mount package. The INA826S is specified over the –40°C to +125°C temperature range.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
INA826SVSON (10)3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

INA826S Simplified Internal Schematic

INA826S frontpage_sbos770.gif

Revision History

Changes from * Revision (May 2017) to A Revision

  • Changed output stage offset voltage from 700 µV to 1000 µVGo