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Texas Instruments TPA6047A4 User Manual

Audio power amplifier evaluation module
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TPA6047A4 Audio Power Amplifier Evaluation Module
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1
Introduction
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2
Operation
3
1
2
3
1
Gain Settings
1
Introduction
1.1
Description
The TPA6047A4 evaluation module (EVM) consists of a single 2-W stereo speaker amplifier and 100-mW
DirectPath™ headphone amplifier complete with a small number of external components mounted on a
circuit board that can be used to drive speakers and headphones directly with external analog audio
sources as inputs. The TPA6047A4 also contains an LDO capable of outputting 4.75 V with a load of 120
mA.
1.2
TPA6047A4EVM Specifications
Supply voltage range, VDD
Supply current, IDD
Speaker amplifier output power per channel, P
Headphone output power per channel, P
DirectPath is a trademark of Texas Instruments.
SLOU240 - August 2007
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List of Figures
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: 16 Ω, VDD = 5 V, THD+N=10%
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Contents
List of Tables
: 4Ω, VDD = 5 V, THD+N=1%
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TPA6047A4 Audio Power Amplifier Evaluation Module
User's Guide
SLOU240 - August 2007
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4.5 V to 5.5 V
1 A, maximum
2 W
100 mW
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Summary of Contents for Texas Instruments TPA6047A4

  • Page 1 DirectPath™ headphone amplifier complete with a small number of external components mounted on a circuit board that can be used to drive speakers and headphones directly with external analog audio sources as inputs. The TPA6047A4 also contains an LDO capable of outputting 4.75 V with a load of 120 TPA6047A4EVM Specifications Supply voltage range, VDD 4.5 V to 5.5 V...
  • Page 2 Operation www.ti.com Operation Quick-Start List for Stand-Alone Operation 2.1.1 Speaker Amplifier Follow these steps to use the TPA6047A4EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the EVM can be made by inserting stripped wire or using banana plugs for the power supply and output connections.
  • Page 3 Operation www.ti.com Table 1. Gain Settings GAIN1 GAIN0 Amplifier Gain (dB) 15.6 21.6 OFF = Jumper REMOVED; ON = Jumper INSTALLED 2.1.4 Power Up 1. Verify correct voltage and input polarity, and turn on the external power supplies. The EVM should begin operation. 2.

  • Page 4: Schematic And Bill Of Materials

    Schematic and Bill of Materials www.ti.com Schematic and Bill of Materials TPA6047A4EVM Schematic ALL CAPS AND RESISTORS ARE 0603 UNLESS SPECIFICALLY NOTED Figure 1. EVM Schematic List of Tables SLOU240 – August 2007 Submit Documentation Feedback...

  • Page 5: Top Side Layout

    Schematic and Bill of Materials www.ti.com TPA6047A4EVM PCB Layers HPVDD ROUT+ < < < ROUT- < < < HP_EN SPKR_RIN LOUT- < > LOUT+ < 0> GAIN0 GAIN1 SPKR_LIN TPA6047A4RHB EVM Figure 2. Top Side Layout SLOU240 – August 2007 List of Tables Submit Documentation Feedback...

  • Page 6: Bottom Side Layout

    Schematic and Bill of Materials www.ti.com TPA6047A4RHB EVM Figure 3. Bottom Side Layout List of Tables SLOU240 – August 2007 Submit Documentation Feedback...
  • Page 7 Schematic and Bill of Materials www.ti.com TPA6047A4EVM Bill of Materials REF. DESCRIPTION SIZE PART NO. VENDOR NO. C3–C6 Capacitor, ceramic, 0.47-µF, X7R, 16-V 0603 06033D104KAT2A Digi-Key/478-1244-1 Capacitor, ceramic, 1-µF, ±10%, X5R, C1, C2, C10, 0603 ECJ-1VB1A105K Digi-Key/PCC2174TR C12-C15 10-V Capacitor, ceramic, 0.1-µF, X7R, 25-V 0603 06033D104KAT2A Digi-Key/478-1244-1...
  • Page 8 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 9 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.