SBOS109A September   1999  – November 2023 INA146

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Pin Configuration and Functions
  6. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics VS = ±2.25 V to ±18 V
    6. 5.6 Electrical Characteristics VS = 5 V Single Supply
    7. 5.7 Amplifier A1, A2 Performance
    8. 5.8 Typical Performance Curves
  7. 6Application and Implementation
    1. 6.1 Application Information
      1. 6.1.1 Operating Voltage
      2. 6.1.2 Setting the Gain
      3. 6.1.3 Common-mode Range
      4. 6.1.4 Offset Trim
      5. 6.1.5 Input Impedance
  8. 7Device and Documentation Support
    1. 7.1 Third-Party Products Disclaimer
    2. 7.2 Documentation Support
      1. 7.2.1 Related Documentation
    3. 7.3 Receiving Notification of Documentation Updates
    4. 7.4 Support Resources
    5. 7.5 Trademarks
    6. 7.6 Electrostatic Discharge Caution
    7. 7.7 Glossary
  9. 8Revision History
  10. 9Mechanical, Packaging, and Orderable Information

Package Options

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

6.1.2 Setting the Gain

The gain of the INA146 is set by using two external resistors, RG1 and RG2, according to the equation:

G = 0.1 × (1 + RG2/RG1)

For a total gain of 0.1, A2 is connected as a buffer amplifier with no RG1. A feedback resistor, RG2 = 10 kΩ, must be used in the buffer connection. This provides bias current cancellation (in combination with internal R5) to assure specified offset voltage performance. Commonly used values are shown in the table of Figure 6-1. Resistor values for other gains must be chosen to provide a 10-kΩ parallel resistance.