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This user's guide describes the operation of the DRV632 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.
SLOU301 - January 2010
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DRV632EVM Evaluation Module
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© 2010, Texas Instruments Incorporated
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User's Guide
SLOU301 - January 2010
DRV632EVM Evaluation Module
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Summary of Contents for Texas Instruments DRV632EVM
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Page 1: Table Of Contents
DRV632EVM Filter Specifications ....................Related Documentation ......................Bill of Materials DirectPath is a trademark of Texas Instruments. Blu-ray Disc is a trademark of Blu-ray Disc Association. SLOU301 – January 2010 DRV632EVM Evaluation Module Submit Documentation Feedback © 2010, Texas Instruments Incorporated... -
Page 2: Overview
Overview Figure 1. DRV632EVM Top View Figure 2. DRV632EVM Bottom View The DRV632EVM customer evaluation module (EVM) demonstrates the capabilities and operation of the DRV632 integrated circuit from Texas Instruments. The DRV632 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: Drv632Evm Functional Block Diagram
EVM. Table 1 summarizes the key parameters. +3.3 V R_IN R_OUT DRV632PW L_OUT L_IN Figure 3. DRV632EVM Functional Block Diagram Table 1. Key Parameters Key Parameters Specification/Unit Supply Voltage 3.3 V Number of Channels Load Impedance 600 Ω (min) -
Page 4: Quick Setup
Quick Setup This section describes the DRV632EVM board with regard to the power supply and system interfaces. It provides information about handling and unpacking the DRV632EVM, absolute operating conditions, and a description of the factory default switch and jumper configurations. -
Page 5: On/Off Sequence
The active low-pass filter component values can be calculated with the help of the TI FilterPro active filter design program available at http://focus.ti.com/docs/toolsw/folders/print/filterpro.html on the TI Web site. Figure 5 illustrates the circuit design for this configuration. SLOU301 – January 2010 DRV632EVM Evaluation Module Submit Documentation Feedback © 2010, Texas Instruments Incorporated... -
Page 6: Second-Order, Active Low-Pass Filter
Component Selection www.ti.com DRV632 Figure 5. Second-Order, Active Low-Pass Filter Table 3. DRV632EVM Filter Specifications Single Ended Differential Gain High Pass Low Pass –1 V/V 16 Hz 40 kHz 100 pF 680 pF 270 pF 1 mF 10 kΩ 10 kΩ... -
Page 7: Layout Recommendations
If the GND pins are connected directly to each other, the device functions without risk of failure, but noise and THD performance can be reduced. On the DRV632EVM, a star ground routing pattern is used; the star point is located directly below the DRV632 device itself. -
Page 8: Design Documentation
Design Documentation www.ti.com Design Documentation Schematics Figure 7. DRV632EVM Schematic DRV632EVM Evaluation Module SLOU301 – January 2010 Submit Documentation Feedback © 2010, Texas Instruments Incorporated... -
Page 9: Bill Of Materials
Design Documentation www.ti.com Bill of Materials The bill of materials (BOM) for the DRV632EVM is listed in Table Table 5. Bill of Materials Part Reference Description Manufacturer Mfr Part No C19, C20 CAP SMD0603 CERM 1000PF 50V 5% COG ROHS C1608C0G1H102J C9–C12... -
Page 10: Drv632Evm Pcb Component Placement
Design Documentation www.ti.com PCB Layers Gerber files are available for download at the DRV632EVM product folder page on the TI Web site. Component placement and board layout are illustrated in Figure Figure 9, and Figure 10, respectively. NOTE: Board layouts are not to scale. These figures are intended to show how the board is laid out;... -
Page 11: Drv632Evm Pcb Bottom Layer
Design Documentation www.ti.com Figure 10. DRV632EVM PCB Bottom Layer SLOU301 – January 2010 DRV632EVM Evaluation Module Submit Documentation Feedback © 2010, Texas Instruments Incorporated... - Page 12 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.
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Page 13: Important Notice
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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