SPRADA5 April   2024 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SJ-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Supplementary Information
    2. 1.2 Features
    3. 1.3 Block Diagram
    4. 1.4 Operation Modes
  5. 2Use Cases
    1. 2.1 Buffer Mode for High-Impedance Source
    2. 2.2 Battery Voltage and Current Monitoring
    3. 2.3 Low-Side Shunt Current Monitoring
    4. 2.4 Three-Phase Low-Side Current Sensing
    5. 2.5 Bidirectional Current Sensing
    6. 2.6 Non-Inverting Amplifier for Low-Voltage Sensors
    7. 2.7 Non-Inverting Amplifier for Bipolar Signals
    8. 2.8 Standalone Mode for Various Applications
  6. 3Summary
  7. 4References

3 Summary

The programmable gain amplifier (PGA) is a high-performance analog front-end that is designed for various applications, such as sensor signal acquisition and DC supply current sensing. The PGA is an operational amplifier-based module with multiple internal programmable gains and filter resistors. With the help of the PGA on all devices with a Type-2 PGA module, the low-voltage on-chip or off-chip ADCs can process a wide range of input signals. Gain flexibility and embedded low-pass filtering enable the current or voltage waveform to be boosted without adding additional gain stages or degrading performance and simplify the design process.