34 OPA - Operational Amplifier

The Operational Amplifier (OPA) module features a standard general purpose three-terminal device with programmable gain options, adjustable input offset voltage and hardware override control capabilities. The OPA module has the following features:

  • 2.3 MHz Gain Bandwidth
    • Dedicated external output (OPAxOUT) (14-pin devices and above)
    • Multiple noninverting input pins available (OPAxIN+)
    • Multiple inverting input pins available (OPAxIN-)
  • Programmable Gain Options Using Built-in Internal Resistor Ladder
  • Configurable Positive and Negative Source Selections
  • Hardware Controlled Drive with Override Controls
    • Forced Unity Gain mode
    • Forced Rail Drive mode
  • Programmable Input Offset Voltage Calibration
  • Internal Connection to the ADC Module
    • Allows OPA to be used as programmable gain amplifier for the ADC Input
Figure 34-1. Operational Amplifier Module Block Diagram
Note:
  1. Refer to the “Pin Allocation Table” for details about OPAxIN- and OPAxIN+ availability per port.