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

5 Analog Input and Output Connections

The programmable amplifier input signal connections for the PGA855EVM are provided through the use of SMA connectors J3, J6, and test points TP3, TP7, located at the left of the EVM. The VOCM input is provided through screw-terminal connector J1, located on the left of the board.

The differential output amplifier connections are provided through screw-terminal connector J4, SMA connectors J2 and J8, and test points TP4 and TP6, located at the right side of the EVM. Figure 5-1 displays a simplified diagram of the PGA855EVM input and output connections.

GUID-20230403-SS0I-WZDS-QNLL-MQFH121QGDGT-low.svgFigure 5-1 PGA855EVM Analog Input and Output Connections

Table 5-1 summarizes the input and output connectors and corresponding test points.

Table 5-1 PGA855EVM Analog Input and Output Connections
Connector Designator Signal Comment Test Point
J3 IN+ SMA TP3
J6 IN– SMA TP7
J2 OUT– SMA TP4
J8 OUT+ SMA TP6
J4.4 OUT– Screw terminal TP4
J4.3 GND Screw terminal TP2
J4.2 GND Screw terminal TP9
J4.1 OUT+ Screw terminal TP6
J1.1 VOCM Screw terminal TP1
J1.2 GND Screw terminal N/A