Texas Instruments DRV602EVM2 User Manual
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Texas Instruments DRV602EVM2 User Manual

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This user's guide describes the operation of the DRV602 evaluation module. This document also provides
measurement data and design information including a schematic, bill of materials, and printed circuit board
(PCB) layout drawings.
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DirectPath is a trademark of Texas Instruments.
Blu-ray Disc is a trademark of Blu-ray Disc Association.
All other trademarks are the property of their respective owners.
SLOU248A - December 2008 - Revised January 2009
Submit Documentation Feedback
DRV602EVM2
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SLOU248A - December 2008 - Revised January 2009
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Summary of Contents for Texas Instruments DRV602EVM2

  • Page 1: Table Of Contents

    ...................... Frequency Response ......................Pop/Click (Enable) DirectPath is a trademark of Texas Instruments. Blu-ray Disc is a trademark of Blu-ray Disc Association. All other trademarks are the property of their respective owners. SLOU248A – December 2008 – Revised January 2009...

  • Page 2: Contents 1 Overview

    Bill of Materials ......................PCB Specifications Overview The DRV602EVM2 customer evaluation module (EVM) demonstrates the capabilities and operation of the DRV602 integrated circuit from Texas Instruments. The DRV602 is a 2-V pop-free stereo line driver designed to allow removal of the output dc-blocking capacitors in audio applications to reduce component count and overall cost.

  • Page 3: Quick Setup

    > 102 dB Quick Setup This section describes the DRV602EVM2 board with regard to the power supply and system interfaces. It provides information about handling and unpacking the DRV602EVM2, absolute operating conditions, and a description of the factory default switch and jumper configurations.

  • Page 4: On/Off Sequence

    Upon opening the DRV602EVM2 package, ensure that the following items are included: • One DRV602EVM2 evaluation board, including: – One DRV602PW device If either item is missing, please contact the Texas Instruments Product Information Center nearest you to inquire about a replacement. Power-Supply Setup A single power supply is required to power up the EVM.

  • Page 5: Second-Order, Active Low-Pass Filter

    DRV602 Figure 3. Second-Order, Active Low-Pass Filter Figure 3 uses the component references also used in the FilterPro software. Various recommendation for filter and gain settings are listed in Table Table 3. DRV602EVM2 Filter Specifications C1’ C2’ C3’ R1’ R2’...

  • Page 6: Differential Input, Second-Order Active Low-Pass Filter

    As with the single-ended input, the differential input filter component values can be calculated with the help of the TI FilterPro active filter design program available on the TI web site. DRV602EVM2 SLOU248A – December 2008 – Revised January 2009 Submit Documentation Feedback...

  • Page 7: Layout Recommendations

    If the SGND pins are connected directly to each other, the device functions without risk of failure, but noise and THD performance can be reduced. On the DRV602EVM2, a star ground routing pattern is used; the star point is located directly below the DRV602 device itself.

  • Page 8: Thd+N Versus Voltage

    DRV602EVM2 Performance www.ti.com Table 6. Audio Performance Analog Input Audio Performance Analog Input Notes/Conditions THD+N, 2.5 kΩ 0.02 V < 0.150 % 20 Hz to 20 kHz (Noise limited) THD+N, 2.5 kΩ 0.2 V < 0.015 % 2 Hz to 20 kHz (Noise limited) THD+N, 2.5 kΩ...

  • Page 9: Thd+N Versus Frequency

    DRV602EVM2 Performance www.ti.com THD+N vs Frequency Figure 6 illustrates characteristic performance for THD+N versus frequency. 0.2 V 0.01 0.001 Load: 2.5 kW 0.0001 10 k 20 k Frequency (Hz) Figure 6. THD+N versus Frequency FFT Spectrum with –60dBFS Tone For the FFT plot shown in...

  • Page 10: Channel Separation

    DRV602EVM2 Performance www.ti.com Channel Separation Figure 8 illustrates the channel separation. The output signal and the reference voltage are both 2 V while the load is 2.5 kΩ. 0 dB Left-to-Right Right-to-Left 10 k 20 k Frequency (Hz) Figure 8. Channel Separation...

  • Page 11: Pop/Click (Enable)

    DRV602EVM2 Performance www.ti.com Pop/Click (Enable) The characteristic performance for pop and click interference is shown with and without an input signal applied, with a load of 2.5 kΩ. Measurement results are presented in a time domain domain. Figure 10, the power supply is applied, and then the shutdown signal is released. The shutdown signal triggers the measuring system.

  • Page 12: Related Documentation From Texas Instruments

    Related Documentation from Texas Instruments www.ti.com Related Documentation from Texas Instruments The following related documents are available through the Texas Instruments web site at http://www.ti.com.These documents have detailed descriptions of the integrated circuits used in the design of the DRV602EVM2.

  • Page 13: Bill Of Materials

    Design Documentation www.ti.com Parts List The bill of materials (BOM) for the DRV602EVM2 is listed in Table Table 9. Bill of Materials Part Reference Description Manufacturer Mfr Part No 1.0 kΩ / 100mW / 5% / 0603 Thick Film Yageo...

  • Page 14: Pcb Specifications

    Solder coating and chemical silver on free copper Electrical test PCB must be electrically tested Manufactured to PERFAG 2E (www.perfag.dk) Aperture table PERFAG 10A (www.perfag.dk) Board dimensions 60 mm x 60 mm DRV602EVM2 SLOU248A – December 2008 – Revised January 2009 Submit Documentation Feedback...

  • Page 15: Drv602Evm2 Pcb Component Placement

    Design Documentation www.ti.com PCB Layers Gerber files are available for download at the DRV602EVM2 product folder page on the TI web site. Component placement and board layout are illustrated in Figure Figure 15, and Figure respectively. Note: Board layouts are not to scale. These figures are intended to show how the board is laid out;...

  • Page 16: Drv602Evm2 Pcb Top Layer

    Design Documentation www.ti.com Figure 15. DRV602EVM2 PCB Top Layer Figure 16. DRV602EVM2 PCB Bottom Layer DRV602EVM2 SLOU248A – December 2008 – Revised January 2009 Submit Documentation Feedback...
  • Page 17 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 18 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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