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

Abstract

Type-2 programmable gain amplifier (PGA) module incorporates an operational amplifier (op-amp) with an internal adjustable gain that can be changed from 2V/V to 64V/V. Due to the PGA's high-input impedance, wide bandwidth, and low output impedance, the PGA offers a buffer operational mode that can present load isolation at the output of the buffer. Having fully differential and rail-to-rail inputs allow the PGA module to easily interface a wide range of input signals and fit them to the low-voltage domain of analog-to-digital converters (ADC). These features make the PGA module a high-performance analog front-end for various applications. This application note describes the functionality of the PGA module in all devices with a Type-2 PGA module, and how the module can be used for analog signal conditioning and acquisition in real-time control applications. For more information on peripheral types, see the C2000 Real-Time Control MCU Peripherals reference guide.