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User's Guide
PGA2500EVMV2 Evaluation Module
This user's guide describes the characteristics, operation, and use of the PGA2500EVMV2, a refreshed
evaluation module (EVM) that is compatible with the PGA2500 on a modern operating system. This document
includes the schematic, printed circuit board (PCB) layout, and Bill Of Materials (BOM). Throughout this
document the terms evaluation board, evaluation module, and EVM are synonymous with the universal
PGA2500EVMV2.
1 Product Overview...................................................................................................................................................................
2
Features...................................................................................................................................................................................5
Started........................................................................................................................................................................6
3.1 Electrostatic Discharge Warning........................................................................................................................................
3.2 Unpacking the EVM...........................................................................................................................................................
3.3 Absolute Operating Conditions Warning............................................................................................................................
Guide.............................................................................................................................................................................8
4.1 Analog and Digital Power Supplies....................................................................................................................................
4.2 Microphone Input...............................................................................................................................................................
Connections.............................................................................................................................................9
4.4 DC Blocking Capacitors.....................................................................................................................................................
Network.............................................................................................................................................................9
Circuitry..............................................................................................................................................10
5.1
Schematic.........................................................................................................................................................................11
5.2 PCB Layout......................................................................................................................................................................
Materials.................................................................................................................................................................15
Operation...............................................................................................................................................................17
6.2 Using the
GUI...................................................................................................................................................................17
Figure 1-2. PGA2500EVMV2 GUI...............................................................................................................................................
Figure 1-3. PGA2500 16-bit Control............................................................................................................................................
Figure 4-1. Power Terminal Block J2 Schematic.........................................................................................................................
Figure 5-1. PGA2500EVMV2 Schematic...................................................................................................................................
Figure 5-2. PGA2500EVMV2 Top Overlay................................................................................................................................
Figure 5-4. PGA2500EVMV2 Bottom Layer..............................................................................................................................
Table 5-1. PGA2500EVMV2 BOM.............................................................................................................................................
SBOU257 - JUNE 2021
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ABSTRACT
Table of Contents
Connector.........................................................................................10
Materials....................................................................................................................11
Overview.......................................................................................................................................17
List of Figures
Diagram.........................................................................................................................2
™
Microcontroller Connected..................................................................................
Configuration...............................................................................................................9
Layer....................................................................................................................................13
Functions............................................................................................17
List of Tables
Copyright © 2021 Texas Instruments Incorporated
Conditions......................................................................................7
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Table of Contents
Related Manuals for Texas Instruments PGA2500EVMV2
Summary of Contents for Texas Instruments PGA2500EVMV2
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Page 1: Table Of Contents
PGA2500EVMV2 Evaluation Module ABSTRACT This user’s guide describes the characteristics, operation, and use of the PGA2500EVMV2, a refreshed evaluation module (EVM) that is compatible with the PGA2500 on a modern operating system. This document includes the schematic, printed circuit board (PCB) layout, and Bill Of Materials (BOM). Throughout this document the terms evaluation board, evaluation module, and EVM are synonymous with the universal PGA2500EVMV2. -
Page 2: Product Overview
65 dB range in 1-dB steps. The differential output of the PGA2500 is made available at VOUT+ and VOUT− (pins 17 and 16, respectively). Gain is controlled using a MSP430F5529 microcontroller and PGA2500EVMV2 Graphical User Interface (GUI), which can be accessed here. The microcontroller and GUI are used to program... -
Page 3: Figure 1-2. Pga2500Evmv2 Gui
CS12 (pins 24 and 23), and the second capacitor connected between CS21 and CS22 (pins 22 and 21). Capacitor values up to 4.7 µF may be utilized. However, larger valued capacitors will result in longer SBOU257 – JUNE 2021 PGA2500EVMV2 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 4 These pins may be used to control relay drivers or switches used for external preamplifier functions, including input pads, filtering, polarity reversal, or phantom power. PGA2500EVMV2 Evaluation Module SBOU257 – JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 5: Features
Features 2 Features The PGA2500EVMV2 provides a convenient platform for evaluating the performance and features of the PGA2500 product. Key EVM features include the following: • Accepts either XLR or TRS balanced input connections • Configurable front-end circuit options for prototyping pads and filters •... -
Page 6: Getting Started
3.1 Electrostatic Discharge Warning Many of the components on the PGA2500EVMV2 are susceptible to damage by electrostatic discharge (ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling the EVM. Failure to observe ESD handling procedures may result in damage to the EVM components. -
Page 7: Absolute Operating Conditions Warning
3.3 Absolute Operating Conditions Warning The user should be aware of the absolute maximum operating conditions for the evaluation module. Table 3-1 summarizes the critical data points. Table 3-1. PGA2500EVMV2 Absolute Maximum Operating Conditions Parameter Package Reference Power-Supply Voltages +5.5 V DC Maximum –5.5 V DC Maximum... -
Page 8: Setup Guide
Figure 4-1. Power Terminal Block J2 Schematic The PGA2500EVMV2 requires two analog supplies and one digital power supply. The analog supplies are VA+ and VA−, respectively. VA+ is typically set to +5.0 V DC, while VA− is typically set to −5.0 V DC. The analog supplies power the PGA2500 microphone preamplifier integrated circuit. -
Page 9: Microphone Input
Figure 4-2. Microphone Input Connector Configuration 4.3 Phantom Power Connections The PGA2500EVMV2 supports connection of a phantom power source across the inputs of the preamplifier using terminal block J1. The voltage source is connected to the hot (+) and cold (−) sides of the preamplifier input through 6.81-kΩ... -
Page 10: Configurable Input Circuitry
J4, which is a 3-pin male XLR connector, or at connector J6, which is a 1/4-inch TRS connector. PGA2500EVMV2 Evaluation Module SBOU257 – JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Schematic, Pcb Layout, And Bill Of Materials
Schematic, PCB Layout, and Bill of Materials 5 Schematic, PCB Layout, and Bill of Materials This section provides the electrical schematic and physical PCB layout information for the PGA2500EVMV2. The Bill of Materials is included for component reference. 5.1 Schematic... -
Page 12: Pcb Layout
Schematic, PCB Layout, and Bill of Materials www.ti.com 5.2 PCB Layout The PGA2500EVMV2 is a four-layer printed circuit board using both through-hole and surface-mount components. Figure 5-2. PGA2500EVMV2 Top Overlay PGA2500EVMV2 Evaluation Module SBOU257 – JUNE 2021 Submit Document Feedback... -
Page 13: Figure 5-3. Pga2500Evmv2 Top Layer
Schematic, PCB Layout, and Bill of Materials Figure 5-3. PGA2500EVMV2 Top Layer SBOU257 – JUNE 2021 PGA2500EVMV2 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 14: Figure 5-4. Pga2500Evmv2 Bottom Layer
Schematic, PCB Layout, and Bill of Materials www.ti.com Figure 5-4. PGA2500EVMV2 Bottom Layer PGA2500EVMV2 Evaluation Module SBOU257 – JUNE 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 15: Bill Of Materials
Schematic, PCB Layout, and Bill of Materials 5.3 Bill of Materials Table 5-1 lists the complete bill of materials for the PGA2500EVMV2. Data for each component is available from the corresponding manufacturer’s web site. Table 5-1. PGA2500EVMV2 BOM Designator... - Page 16 Schematic, PCB Layout, and Bill of Materials www.ti.com Table 5-1. PGA2500EVMV2 BOM (continued) Designator Value Description Part Number Manufacturer R7, R12 6.81 kOhms ±0.1% 0.4W, 2/5W Chip TNPW12066K81BEEN Vishay Dale Resistor 1206 (3216 Metric) Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant Thin Film 10.0k RES, 10.0 k, 0.1%, 0.125 W, 0805...
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Page 17: Software Operation
PGA2500 gain and support functions. 6.1 Applications Software Overview The applications software supplied with the PGA2500EVMV2 allows the user to control the board via an online GUI, found here. All programmable functions are supported. 6.2 Using the GUI Connect the MSP-EXP430F5529LP to the PGA2500EVMV2 board. - Page 18 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated...
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