Texas Instruments PSIEVM, User Manual

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Overview
3 SBAU289 – October 2017
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Copyright © 2017, Texas Instruments Incorporated
Precision Signal Injector EVM (PSIEVM)
5 Amplitude Range
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6 Typical Performance
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7 Example 1 Hardware Setup
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8 ADS8881EVM Example Parameters
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9 Example 1 Results
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10 Example 2 Hardware Setup
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11 ADS8900BEVM Examples Parameters
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12 Example 2 Results
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13 Example 3 Hardware Setup
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14 ADS8681EVM Example Parameters
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15 Example 3 Results
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16 Power Supplies
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17 PSIEVM Bill of Materials
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Trademarks
Microsoft, Windows are registered trademarks of Microsoft Corporation.
LabVIEW is a trademark of National Instruments Corporation.
All other trademarks are the property of their respective owners.
1 Overview
The Precision Signal Injector Evaluation Module (PSIEVM, or PSI for short) is a platform for testing and
evaluating the performance of successive approximation register (SAR) ADCs. The board is strictly
designed to provide a low distortion, low-noise, 2-kHz input signal for driving the input of the ADC and
pairs with most of TI’s SAR ADC evaluation modules (EVMs). The board is powered over a USB cable
which also provides a user interface connection to a PC.
The software platform that accompanies the PSIEVM allows for the user to adjust the PSIEVM output
through the graphical user interface (GUI) that is downloaded to the computer.
Along with the PSIEVM, this evaluation kit includes an A-to-micro-B USB cable to connect to a computer
via USB 3.0 or below, as well as 2 SMA to SMA coaxial cables for EVM connectivity.
1.1 PSIEVM Features
The PSIEVM includes the following features:
• Software suite with a graphical tool for controlling the amplitude, frequency, and offset of the AC signal
• Onboard filter for generating a very low distortion, low-noise, 2-kHz signal
• Jumper-selectable options for filtering and offset voltage or common-mode voltage
• Single-ended or true differential signal output options.
• Easy-to-use evaluation software for Microsoft
®
Windows
®
7, Windows 8, and Windows 10 64-bit
operating systems
• Powered over a single USB cable
2 PSIEVM Initial Setup
This section explains the initial hardware and software setup procedure required for the proper operation
of the PSIEVM.
2.1 Default Jumper Settings
Jumper settings are used to enable or disable filter stages, enable or disable EEPROM write, select
internal or external power supplies, select internal or external analog signals, and adjust offset or
common-mode voltage for the outputs. Jumper settings are described in and initial jumper position is
shown in .