SPRADA5 April   2024 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

1.4 Operation Modes

PGA module can support four different operational modes based on the values of the MUXSEL register, which are given in Table 1-1.

  1. Buffer mode: PGA works in unity gain mode.
  2. Standalone mode: PGA operates as a conventional op-amp.
  3. Non-inverting mode: PGA works as a non-inverting op-amp.
  4. Subtractor mode: PGA output voltage equals the subtraction of the inputs applied to inverting and non-inverting pins.
Table 1-1 Modes of Operation
Mode MUXSEL[PMUXSEL] MUXSEL[NMUXSEL] MUXSEL[MMUXSEL]
Buffer mode 0 0 0
Standalone op-amp mode 0 2 0
Non-inverting mode 0 1 1
Subtractor mode 0 1 2 or 3