Table of Contents
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1
Introduction
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3
TPA2050D4EVM Schematic
4
TPA2050D4EVM PCB Layers
5
TPA2050D4EVM Parts List
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Jumpers Default Setting
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Test Points Information
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1
Introduction
1.1
Description
The TPA2050D4 is a stereo Class-D power amplifier along with a stereo DirectPath™ headphone
amplifier. Both input channels have 32-step volume control and the DirectPath™ headphone amplifier has
a 4-step level gain control with power limiter. The volume is controlled through an I
amplifiers have output short-circuit and thermal-overload protection.
The TPA2050D4 evaluation module(EVM) is a complete, stand-alone audio board. It contains the
TPA2050D4 WCSP(YZK) Class-D audio subsystem.
All components and the EVM are Pb free.
DirectPath is a trademark of Texas Instruments.
Windows is a trademark of Microsoft Corporation.
2
I
C is a trademark of Philips Electronics.
SLOU206 - July 2008
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TPA2050D4EVM Evaluation Module
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List of Figures
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List of Tables
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Contents
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TPA2050D4EVM Evaluation Module
User's Guide
SLOU206 - July 2008
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C™ interface. All
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Summary of Contents for Texas Instruments TPA2050D4EVM
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Page 1: Table Of Contents
The TPA2050D4 evaluation module(EVM) is a complete, stand-alone audio board. It contains the TPA2050D4 WCSP(YZK) Class-D audio subsystem. All components and the EVM are Pb free. DirectPath is a trademark of Texas Instruments. Windows is a trademark of Microsoft Corporation. C is a trademark of Philips Electronics. -
Page 2: Operation
16 Ω Minimum load impedance (Headphone) Operation The TPA2050D4EVM can be evaluated in a stand-alone mode or when connected to existing circuits with C controls. Quick Start for Stand-Alone Operation A desktop or laptop with Windows™ XP installed is required in the stand-alone operation. Connect the EVM to a computer with a USB cable. -
Page 3: Stereo Differential Mode Input Configuration
Figure 2. Non-Differential Mode Input Configuration 3. Install shunts in JP2 and JP3 as shown in Figure 3. This sets the TPA2050D4 to accept I C inputs from the EVM itself. SLOU206 – July 2008 TPA2050D4EVM Evaluation Module Submit Documentation Feedback... -
Page 4: Place Shunts Horizontally Across Scl And Sda
TP5, TP6, TP7, TP8 Filtered OUTR+, OUTR-, OUTL-, OUTL+ HPVSS TP10 INR_1 TP11 INL_1 TP12 INL_2 TP13 INR_2 HPRIGHT HPLEFT TP18 DVDD TP20 TP23 TP24 HPVDD TP27 VREF TP19, TP21, TP22, TP25, TP26 TPA2050D4EVM Evaluation Module SLOU206 – July 2008 Submit Documentation Feedback... -
Page 5: Starting The Software
Operation www.ti.com 2.1.3 Using the Software 1. Start the TPA2050D4 Interface by clicking the Start menu and clicking on the Texas Instruments Inc -> TPA20050D4 icon. Figure 4. Starting the Software SLOU206 – July 2008 TPA2050D4EVM Evaluation Module Submit Documentation Feedback... -
Page 6: Software Interface
9. Adjust the headphone gain in HP Gain by sliding the bar. 10. Select the headphone limiter level by clicking the voltage limit. 11. Select the headphone impedance in Load Resistance, the Headphone Limiter Power Level will be TPA2050D4EVM Evaluation Module SLOU206 – July 2008 Submit Documentation Feedback... -
Page 7: Connect I 2 C Controls To Jp3
Quick Start List When Connected to External I C Controller The TPA2050D4EVM can be easily connected to existing circuits with I C controls. Connections to the EVM module can be made using banana plugs for the power supply. The inputs accept standard RCA plugs. -
Page 8: Tpa2050D4Evm Schematic
TPA2050D4EVM Schematic www.ti.com TPA2050D4EVM Schematic Figure 7. TPA2050D4EVM Schematic TPA2050D4EVM Evaluation Module SLOU206 – July 2008 Submit Documentation Feedback... -
Page 9: Tpa2050D4Evm - Top Layer
TPA2050D4EVM PCB Layers www.ti.com TPA2050D4EVM PCB Layers Figure 8. TPA2050D4EVM – Top Layer Figure 9. TPA2050D4EVM – Layer 2 SLOU206 – July 2008 TPA2050D4EVM Evaluation Module Submit Documentation Feedback... -
Page 10: Tpa2050D4Evm - Layer
TPA2050D4EVM PCB Layers www.ti.com Figure 10. TPA2050D4EVM – Layer 3 Figure 11. TPA2050D4EVM – Bottom Layer TPA2050D4EVM Evaluation Module SLOU206 – July 2008 Submit Documentation Feedback... -
Page 11: Tpa2050D4Evm Parts List
TPA2050D4EVM Parts List www.ti.com TPA2050D4EVM Parts List Table 3. TPA2050D4EVM Parts List Description Size MFR / Part No. Vendor / Part No. C15, C44 CAP, TANT, 100µF, 10V, 10%, LOESR SMD EPCOS/B45197A2107K309 DigiKey/495-1528-2-ND Capacitor, ceramic, 1.0uF, ±10%, X5R, 10 V C1–C4... - Page 12 TPA2050D4EVM Parts List www.ti.com Table 3. TPA2050D4EVM Parts List (continued) Description Size MFR / Part No. Vendor / Part No. J2, J3 Header, 2 position, male, 2.54mm Sullins/PBC36SAAN DigiKey/S1011E-36-ND 103 J7–J10 Phono jack, PC mount, switched Switchcraft/PJRAN1X1U03 Newark/16C1860 J5, J6, J11–J14...
- Page 13 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 14 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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