Datasheet

OA Introduction

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20.1 OA Introduction

The OA operational amplifiers support front-end analog signal conditioning prior to analog-to-digital

conversion.

Features of the OA include:

• Single supply, low-current operation

• Rail-to-rail output

• Programmable settling time vs. power consumption

• Software selectable configurations

• Software selectable feedback resistor ladder for PGA implementations

NOTE: Multiple OA Modules

Some devices may integrate more than one OA module. If more than one OA is present on a

device, the multiple OA modules operate identically.

Throughout this chapter, nomenclature appears such as OAxCTL0 to describe register

names. When this occurs, the x is used to indicate which OA module is being discussed. In

cases where operation is identical, the register is simply referred to as OAxCTL0.

The block diagram of the OA module is shown in Figure 20-1.

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OA SLAU144J–December 2004–Revised July 2013

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