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User's Guide
SBOU082A–December 2009–Revised February 2010
PGA870EVM
This user's guide describes the characteristics, operation, and use of the PGA870EVM, an evaluation
fixture for the PGA870. The PGA870 is a wideband programmable gain amplifier (PGA) for high-speed
signal chain and data acquisition systems. This evaluation module (EVM) allows evaluation of all aspects
of the PGA870 device. Complete circuit descriptions, schematic diagrams, and bills of material are
included in this document. For more information about the PGA870, see the product data sheet (available
for download at www.ti.com).
Contents
1 Introduction .................................................................................................................. 2
2 EVM Overview ............................................................................................................... 2
3 PGA870EVM Control Panel Graphical User Interface (GUI) .......................................................... 5
4 GUI Software Installation and Use ........................................................................................ 5
5 Schematic and Parts List .................................................................................................. 8
List of Figures
1 Switch and Jumper Block Positions for Enabled Device, Gain = 20 dB, Unlatched Gain Mode ................. 3
2 Jumper Block Positions for Device Gain, Latching, and Disable to be Controlled through DB25
Connector (J8)............................................................................................................... 4
3 Switch and Jumper Block Positions for Device Gain (Unlatched Mode) Controlled through DB25
Connector and USB Interface Board..................................................................................... 4
4 PGA870EVM Control Panel GUI After Installation, Before Successful Connection to PGA870EVM............ 5
5 PGA870EVM Control Panel GUI After Successful Connection to PGA870EVM................................... 6
6 Examples of Control Panel GUI Connected to the PGA870EVM .................................................... 7
7 PGA870EVM Schematic................................................................................................... 8
8 Top Layer (Layer 1)......................................................................................................... 9
9 Ground Layer (Layer 2) .................................................................................................... 9
10 Power Layer (Layer 3)...................................................................................................... 9
11 Bottom Layer (Layer 4)..................................................................................................... 9
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SBOU082A–December 2009–Revised February 2010 PGA870EVM
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