SLIS149 June   2014 TPL0102-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Functional Block Diagram
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Operating Characteristics
    7. 7.7 Timing Requirements
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Potentiometer Pin Description
        1. 8.3.1.1 HA, HB, LA, LB
        2. 8.3.1.2 SDA, SCL
        3. 8.3.1.3 A0, A1, A2
      2. 8.3.2 Standard I2C Interface Details
      3. 8.3.3 Ideal Resistance Values
    4. 8.4 Device Functional Modes
    5. 8.5 Register Maps
      1. 8.5.1 Slave Address
      2. 8.5.2 TPL0102-EP Register Maps
      3. 8.5.3 IVRA (Initial Value Register for Potentiometer A)
      4. 8.5.4 WRA (Wiper Resistance Register for Potentiometer A)
      5. 8.5.5 IVRB (Initial Value Register for Potentiometer B)
      6. 8.5.6 WRB (Wiper Resistance Register for Potentiometer B)
      7. 8.5.7 ACR (Access Control Register)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
  10. 10Layout
    1. 10.1 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

9 Application and Implementation

9.1 Application Information

In a simple operational amplifier configuration, like the one found in Figure 21, the TPL0102-EP is used to control the gain and offset voltage of the operational amplifier. Using the TPL0102-EP in a rheostat mode (like Rheostat Mode A in Figure 19), the gain setting of the negative feedback loop can be adjusted freely. To have maximum control of the offset voltage correction of the operational amplifier, the voltage divider mode can be used; giving the user an increased amount of control and precision for systems sensitive to DC offset.

9.2 Typical Application

os_voltgain_slis149.gifFigure 21. Offset Voltage and Gain Adjustment