Datasheet

Introduction

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1 Introduction

1.1 PGA281

The PGA281 is a high-precision instrumentation amplifier with pin-programmable gain, attenuation, and

error detection. The PGA281 offers low offset voltage, near zero drift, and very low 1/f noise for high-

resolution, precision measurement. The high supply voltage and excellent common-mode rejection comply

with the requirements for universal industrial signal front-ends.

1.2 PGA281EVM

The PGA281EVM provides basic functional evaluation of the PGA281, along with the following features:

• Onboard power management circuitry generates all required power-supply rails from one split-supply

input

• DIP switch allows easy setting of pin-programmable gain

• Error flag LED provides visual feedback of any detected error condition

• Easy access to pertinent nodes with test points, BNC connectors, and banana jacks

• Component footprints allow multiple filtering configurations

A picture of the PGA281EVM is shown in Figure 1.

Figure 1. PGA281EVM

PGA281EVM dit.SBOU130–May 2013

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