SBOS052B September   2000  – January 2026 INA141

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
    6. 5.6 Typical Characteristics
  7. 6Application and Implementation
    1. 6.1 Application Information
      1. 6.1.1 Setting the Gain
      2. 6.1.2 Dynamic Performance
      3. 6.1.3 Noise Performance
      4. 6.1.4 Offset Trimming
      5. 6.1.5 Input Bias Current Return Path
      6. 6.1.6 Input Common-Mode Range
      7. 6.1.7 Low-Voltage Operation
      8. 6.1.8 Input Protection
  8. 7Device and Documentation Support
    1. 7.1 Device Nomenclature
    2. 7.2 Receiving Notification of Documentation Updates
    3. 7.3 Support Resources
    4. 7.4 Trademarks
    5. 7.5 Electrostatic Discharge Caution
    6. 7.6 Glossary
  9. 8Revision History
  10. 9Mechanical, Packaging, and Orderable Information

6.1.1 Setting the Gain

Gain is selected with a jumper connection (see Figure 6-1). With no jumper installed, G = 10 V/V. With a jumper installed, G = 100 V/V. To preserve good gain accuracy, this jumper must have low series resistance. A resistance of 0.5 Ω in series with the jumper decreases the gain by 0.1%.

Internal resistor ratios are laser trimmed to provide excellent gain accuracy. Actual resistor values can vary by approximately ±25% from the nominal values shown.

Gains between 10 V/V and 100 V/V are achieved by connecting an external resistor to the jumper pins. However, this configuration is not recommended because the ±25% variation of internal resistor values makes the required external resistor value uncertain. A companion model, the INA128, features accurately trimmed internal resistors so that gains from 1V/V to 10,000V/V can be set with an external resistor.