SLVUDF8 November   2025 PGA854

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
      1. 1.1.1 Electrostatic Discharge Caution
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
      1. 1.4.1 Hot Surface Warning
  8. 2Hardware
    1. 2.1 Setup and Connections
    2. 2.2 Jumper Settings
    3. 2.3 Power-Supply Connections
    4. 2.4 Analog Input and Output Connections
    5. 2.5 Digital Input Pins and Gain Control
    6. 2.6 Modifications
  9. 3Hardware Design Files
    1. 3.1 PCB Layout
    2. 3.2 Schematic
    3. 3.3 Bill of Materials
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Related Documentation

1.4 Device Information

The PGA854 is a wide-bandwidth, high-voltage, low-noise, programmable gain instrumentation amplifier with differential output. The super-beta input transistors offer low input bias current, which in turn provides a low input current noise density of 0.3pA/√Hz, making the PGA854 a versatile choice for virtually any sensor type. The inputs include a built-in overvoltage protection of ±40V beyond the power supplies. The low-noise current-feedback front-end architecture offers gain flatness at high frequencies, making the PGA854 an excellent high-impedance sensor readout device.

The PGA855 is similar to the PGA854 but offers different gain options. The PGA854 and PGA855 are pin-to-pin compatible and this EVM can be used for both. Table 1-2 outlines jumper and gain configurations.

Table 1-2 Gain Options for PGA854 and PGA855 in V/V
A2 (J10)A1 (J11)A0 (J12)PGA854PGA855
0000.50.125
00110.25
01020.5
01151
100102
101204
110508
11110016