SBOU296A April   2023  – September 2023 PGA855

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Overview
    1. 1.1 Related Documentation
    2. 1.2 Electrostatic Discharge Caution
    3. 1.3 Hot Surface Warning
  5. 2EVM Circuit Description
  6. 3Jumper Settings
  7. 4Power-Supply Connections
  8. 5Analog Input and Output Connections
  9. 6Digital Input Pins and Gain Control
  10. 7Modifications
  11. 8Schematic, PCB Layout, and Bill of Materials
    1. 8.1 Schematic
    2. 8.2 PCB Layout
    3. 8.3 Bill of Materials
  12. 9Revision History

1 Overview

The PGA855 is a precision, high-bandwidth programmable gain instrumentation amplifier with fully differential outputs optimized to drive high-performance analog-to-digital converters (ADCs) and fully differential inputs. The PGA855 is equipped with eight binary gain settings, from an attenuating gain of 0.125 V/V to a maximum of 16 V/V, using three digital gain-selection pins. The output common-mode voltage can be independently set using the VOCM pin. The device features super-beta input transistors from Texas Instruments, which provide ultra-low input offset voltage, offset drift, input bias current, input voltage noise, and current noise. For a full list of the electrical characteristics for the PGA855, see the PGA855 Low-Noise, High-Bandwidth, Fully Differential Output Programmable-Gain Instrumentation Amplifier data sheet.