User's Guide SLOU205 - July 2007 DRV600EVM User's Guide This user's guide describes the operation and configuration of the evaluation module (EVM) for the DRV600 stereo line driver. The document also provides measurement data and design information, including a schematic, bill of materials, and layout figures. 1 2 3 4 5 6 Contents Overview ...................................................................................................................... 2 Quick Setup Guide........................................................................................................... 4 Shutdown ..................................................................................................................... 5 DRV600EVM Performance ................................................................................................. 6 Related Documentation from Texas Instruments ...................................................................... 11 Design Documentation .................................................................................................... 12 List of Figures 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 DRV600EVM ................................................................................................................. 2 DRV600 Functional Block Diagram ....................................................................................... 3 DRV600EVM Physical Structure ........................................................................................... 4 Recommended Power-Up/-Down Sequence ............................................................................. 5 THD+N vs Voltage (600 load) ............................................................................................ 7 THD+N vs Voltage (100k load) .......................................................................................... 7 THD+N vs Frequency (600 load) ........................................................................................ 7 THD+N vs Frequency (600 load) Using X7R Input Caps ............................................................ 8 FFT Spectrum with -60dBFS Tone ....................................................................................... 8 Idle Noise FFT Spectrum ................................................................................................... 9 Channel Separation ......................................................................................................... 9 Frequency Response ...................................................................................................... 10 Phase Response ........................................................................................................... 10 Pop/Click (Enable) ......................................................................................................... 11 Pop/Click (Disable) ......................................................................................................... 11 DRV600EVM Schematic .................................................................................................. 12 DRV600EVM PCB Component Side (Top) ............................................................................. 14 PCB Top Layer ............................................................................................................. 14 PCB Bottom Layer ......................................................................................................... 14 List of Tables 1 2 3 4 5 6 7 8 9 DRV600 Features ............................................................................................................ 2 Recommended Supply Voltage ............................................................................................ 5 General Test Specifications ................................................................................................ 6 Electrical Data ................................................................................................................ 6 Audio Performance Data .................................................................................................... 6 Physical Specifications ...................................................................................................... 6 Related Documentation from Texas Instruments ...................................................................... 11 DRV600EVM Parts List .................................................................................................... 13 PCB Specifications ......................................................................................................... 13 All trademarks are the property of their respective owners. SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 1 www.ti.com Overview 1 Overview The DRV600EVM evaluation module demonstrates the capabilities and performance of the DRV600RTJ from Texas Instruments. The DRV600 is a stereo line driver designed to allow the removal of the dc-blocking capacitors typically found in an audio application, reducing overall component count and cost. The DRV600 is ideal for single-supply electronics where size and cost are critical design parameters. The DRV600 is capable of driving 2VRMS into a 600 load with a 3.3V supply. The DRV600 has a fixed gain of -1.5V/V and line outputs that have 8kV electrostatic discharge (ESD) protection. The DRV600 also has independent shutdown controls for the left and right audio channels. This EVM is configured with two RCA phone input connectors and two RCA phone output connectors. The power supply is connected via a 2-pin, 2.54mm pin header. Table 1 summarizes the key parameters of the device. Table 1. DRV600 Features KEY PARAMETERS Supply Voltage 1.8V to 4.5V Number of Channels 2 Load Impedance Min 600 Output Voltage 2VRMS / 600 < 0.1% THD DYR > 108dB This EVM is designed for evaluating applications such as A/V receivers, DVD receivers, DVD mini-component systems, home theater in a box (HTIB) designs, or set-top boxes. The module is designed to quickly demonstrate the electrical performance of the device. This document covers EVM specifications and audio performance measurement graphs. It provides design documentation including schematics, a parts list, layout, and mechanical design. Figure 1. DRV600EVM Gerber files are available for download through the DRV600RTJ product folder on the TI web site. The EVM is delivered with cables and an input-USB board to connect to an input source. The evaluation board can be controlled by a PC. Throughout this document, the acronym EVM and the phrases evaluation module and evaluation board are synonymous with the DRV600EVM. 2 DRV600EVM User's Guide SLOU205 - July 2007 Submit Documentation Feedback www.ti.com Overview 1.1 DRV600EVM Features * * * * Two-channel evaluation module, a double-sided, plated-through printed circuit board (PCB) 2VRMS line output No output capacitors Shutdown button SVDD Audio In - R Audio Out - R SVSS SGND SVDD Short-Circuit Protection Audio Out - L Audio In - L SVSS AV = -1.5V/V C1P SDx Bias Circuitry Charge Pump C1N PVSS Figure 2. DRV600 Functional Block Diagram SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 3 www.ti.com Quick Setup Guide 1.2 PCB Key Map The physical structure of the DRV600EVM is shown in Figure 3. LEFT LEFT RIGHT RIGHT Figure 3. DRV600EVM Physical Structure 2 Quick Setup Guide This section describes the DRV600EVM with regard to power supply and the system interface. It also provides information about handling and unpacking the module, absolute operating conditions, and a description of the factory default switch and jumper configuration. 2.1 Electrostatic Discharge Warning Many of the components on the DRV600EVM are susceptible to damage by electrostatic discharge (ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling the EVM, including the use of a grounded wrist strap at an approved ESD workstation. CAUTION Failure to observe ESD handling procedures may result in damage to EVM components. 2.2 Unpacking the EVM Upon opening the DRV600EVM package, please check to make sure that the following items are included: * 1 DRV600EVM board with one DRV600RTJ device installed * 1 PurePath CD-ROM If either of these items is missing, please contact the Texas Instruments Product Information Center nearest you to inquire about a replacement. 4 DRV600EVM User's Guide SLOU205 - July 2007 Submit Documentation Feedback www.ti.com Shutdown 2.3 Power Supply Setup To power up the EVM, one power supply is needed. The power supply is connected to the EVM using a 2-pin, 2.54mm pin header, J10. Table 2 summarizes the EVM power-supply requirements. Table 2. Recommended Supply Voltage VOLTAGE LIMITATIONS DESCRIPTION Power supply CURRENT REQUIREMENT 1.8V to 4.5V CABLE 0.3A CAUTION Failure to observe ESD handling procedures may result in damage to EVM components. 3 Shutdown For minimum click and pop interference during power-up and power-down, the shutdown pin should be kept low. The preferred power-up/-down sequence is shown in Figure 4. DVDD SHUTDOWN > 50ms > 50ms Figure 4. Recommended Power-Up/-Down Sequence SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 5 www.ti.com DRV600EVM Performance 4 DRV600EVM Performance This section provides the general test specifications, the electrical data, audio performance data, and physical specifications. Table 3. General Test Specifications (1) GENERAL TEST SPECIFICATIONS NOTES/CONDITIONS Supply Voltage 3.3V Load Impedance 600 Input Signal 1kHz Sine Measurement Filter (1) AES17 These test conditions are used for all tests, unless otherwise specified. Table 4. Electrical Data (1) ELECTRICAL DATA SPECIFICATIONS Output Voltage, 600 NOTES/CONDITIONS 2.1VRMS 1kHz, unclipped (< 1% THD), TA = +25C Output Voltage, 600 VRMS 1kHz, 10% THD+N, TA = +25C Output Voltage, 100k 2.15VRMS 1kHz, unclipped (< 1% THD), TA = +25C Output Voltage, 100k VRMS 1kHz, 10% THD+N, TA = +25C Supply Current < 10mA 1kHz, 2mVRMS output voltage Supply Current < 12mA 1kHz, 2VRMS output voltage (1) All electrical and audio specifications are typical values. Table 5. Audio Performance Data (1) AUDIO PERFORMANCE SPECIFICATIONS NOTES/CONDITIONS THD+N, 600 0.02VRMS < 0.02 % 1kHz THD+N, 600 0.2VRMS < 0.05 % 1kHz THD+N, 600 2VRMS < 0.08 % 1kHz THD+N, 100k 0.02VRMS < 0.10 % 1kHz THD+N, 100k 0.2VRMS < 0.13 % 1kHz THD+N, 100k 2VRMS < 0.02 % 1kHz Dynamic Range > 109dB Ref: 2VRMS, A-weighted, AES17 filter Noise Voltage < 7VRMS A-weighted, AES17 filter DC Offset < 5mV No signal, 600 load Channel Separation > 90dB 1kHz, 2VRMS Frequency Response: 20Hz to 20kHz (1) +0.5/-0.5dB 2VRMS/600 All electrical and audio specifications are typical values. Table 6. Physical Specifications PHYSICAL SPECIFICATIONS PCB Dimensions Total Weight 6 DRV600EVM User's Guide NOTES/CONDITIONS 50 x 60 x 25 Width x Length x Height (mm) 35g Components + PCB + Mechanics SLOU205 - July 2007 Submit Documentation Feedback www.ti.com DRV600EVM Performance 4.1 THD+N vs Voltage (600 load) 10 1.8V DVDD THD+N (%) 1 3.3V DVDD 0.1 4.5V DVDD 0.01 0.001 3m 10m 1 100m 2 4 VRMS (V) Figure 5. THD+N vs Voltage (600 load) 4.2 THD+N vs Voltage (100k load) 10 1.8V DVDD THD+N (%) 1 3.3V DVDD 0.1 4.5V DVDD 0.01 0.001 3m 10m 100m 1 2 4 VRMS (V) Figure 6. THD+N vs Voltage (100k load) 4.3 THD+N vs Frequency (600 load) 10 THD+N (%) 1 0.1 2VRMS 0.01 0.2VRMS 0.001 20 100 1k 10k 20k Frequency (Hz) Figure 7. THD+N vs Frequency (600 load) SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 7 www.ti.com DRV600EVM Performance The DRV600EVM uses a 1F film capacitor for ac-coupling of the input signal. If a lower cost ceramic capacitor such as an X7R is used, higher THD at low frequencies should be expected. Y5V capacitors will show even higher THD performance and should not be used. 10 THD+N (%) 1 0.1 Right Left 0.01 0.001 20 100 1k 10k 20k Frequency (Hz) Figure 8. THD+N vs Frequency (600 load) Using X7R Input Caps The X7R capacitors raises the 20Hz THD from 0.02% to 0.1%--five times higher. 4.3.1 FFT Spectrum with -60dBFS Tone Output Voltage (dBr A) Reference voltage is 2VRMS, FFT size 16k. 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 0 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k Frequency (Hz) Figure 9. FFT Spectrum with -60dBFS Tone This spectrum corresponds to a dynamic range of 110dB, A-weighted. SNR measures at 110dB, A-weighted. 8 DRV600EVM User's Guide SLOU205 - July 2007 Submit Documentation Feedback www.ti.com DRV600EVM Performance 4.4 Idle Noise FFT Spectrum Output Voltage (dBr A) Reference voltage is 2VRMS, FFT size 16k. 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 0 10k 20k 30k 40k 50k 60k 70k 80k 90k Frequency (Hz) Figure 10. Idle Noise FFT Spectrum 4.5 Channel Separation Channel Separation (dBr A) Channel 1 output signal is 2VRMS; channel 2 input is grounded. Reference voltage is 2VRMS; the load is 600. 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 20 100 1k 10k 20k Frequency (Hz) Figure 11. Channel Separation SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 9 www.ti.com DRV600EVM Performance 4.6 Frequency Response Measurement bandwidth filter is set to 500kHz. 4.0 3.6 Amplitude (dBr A) 3.2 2.8 2.4 2.0 1.6 1.2 0.8 0.4 0 0 100k 1k 10k 100k 200k Frequency (Hz) Figure 12. Frequency Response 0 -20 -40 Phase () -60 -80 -100 -120 -140 -160 -180 -200 0 100k 1k 10k 100k 200k Frequency (Hz) Figure 13. Phase Response The low frequency cutoff of 10Hz (-3dB) is determined by the input ac-coupling capacitor together with the input impedance of the DRV600. A 1F capacitor is used on the DRV600EVM. The input impedance of the DRV600 is 15k. This impedance gives a -3dB cutoff of 10Hz. This result corresponds with the frequency response measurements above. An RC filter is placed at the DRV600 to filter high-frequency noise. A 220 resistor and a 1nF NPO capacitor is used. This configuration gives a -3dB frequency of 720kHz. 4.7 Pop/Click (Enable) No input signal is applied. The measurement results are presented both in a time domain and in a frequency domain. The resistor load is 600 in both examples. The power supply is applied, and then the shutdown signal is released. The shutdown signal is used to trigger the measuring system. 10 DRV600EVM User's Guide SLOU205 - July 2007 Submit Documentation Feedback www.ti.com 200 0 150 -10 Output Voltage Spectrum (dBV) Output Voltage (mV) Related Documentation from Texas Instruments 100 50 0 -50 -100 -150 -20 -30 -40 -50 -60 -70 -80 -90 -100 -200 0 1m 2m 3m 4m 20 5m 100 1k 10k 20k Frequency (Hz) Time (sec) Figure 14. Pop/Click (Enable) The DRV600 shows very low pop interference during the enable time; only two small, high-frequency spikes can be seen. 4.8 Pop/Click (Disable) No input signal is applied. The measurement results are presented both in a time domain and in a frequency domain. 200 0 150 -10 Output Voltage Spectrum (dBV) Output Voltage (mV) The resistive load is 600 in both examples. 100 50 0 -50 -100 -150 -20 -30 -40 -50 -60 -70 -80 -90 -100 -200 0 1m 2m 3m 4m 5m 20 100 1k 10k 20k Frequency (Hz) Time (sec) Figure 15. Pop/Click (Disable) During power-down, the click is even lower than during power-on (enable). A very small click is seen. 5 Related Documentation from Texas Instruments Table 7 contains a list of documents that have a detailed description of the integrated circuits used in the design of the DRV600EVM. The data sheet can be obtained through the TI website. Table 7. Related Documentation from Texas Instruments PART NUMBER LITERATURE NUMBER DRV600 SLOS536 SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 11 www.ti.com Design Documentation 6 Design Documentation This section includes a schematic for the DRV600EVM as well as the bill of materials (BOM) and the PCB design specifications. 6.1 Schematic Line Driver +3.3V J10 1 2 1 R13 100k 1 GND 2 PGND 3 C1N 4 NC 5 16 2 1 NC 17 18 /SDL 20 19 C15 INR U1 DRV600 PVSS C14 1uF 1 mF 15 SDR 14 INL 13 NC 12 OUTR 11 1 R11 GND 2 2 C1P C16 4 3 2 1 1 J11 R12 GND 2 1 2 C18 220R 1nF GND 4 3 2 1 1 SVDD OUTL 9 SVSS NC 8 7 NC 6 2 Phono socket 2 C17 220R 1nF 1uF 1 mF 1uF 1 mF GND 1 1 1uF 1 mF 1 SW1 Switch GND 2 2 10 1 SGND GND C13 PVDD PowerPAD GND NC 21 3 4 C12 1uF 1 mF 2 1.8V to 4.5V Power supply C11 1uF 1 mF 2 Header 1 1 2 GND Phono socket Input J12 GND +3.3V Phono socket 4 3 2 1 J21 Output GND Phono socket 4 3 2 1 J22 GND Figure 16. DRV600EVM Schematic 12 DRV600EVM User's Guide SLOU205 - July 2007 Submit Documentation Feedback www.ti.com Design Documentation 6.2 Parts List Table 8. DRV600EVM Parts List QTY 6.3 REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER MFR PART NO. 1 R13 100k / 100mW / 5% / 0603 Thick Film Resistor Yageo RC0603JR-07100KL 2 R11 R12 220R / 100mW / 5% / 0603 Thick Film Resistor Yageo RC0603JR-07220RL 4 C11 C12 C13 C14 Ceramic 1uF / 16V / 20% X7R 0805 Capacitor BC Components 0805B105M160NT 2 C17 C18 Ceramic 1nF / 50V / 10% NP0 0603 Capacitor BC Components 0603N102K500NT 2 C15 C16 Metal Film 1uF / 16V / 20% Polyester 1210 Capacitor Panasonic ECPU1C105MA5 1 U1 DRV600 / DirectPath(TM) Audio Line Driver (QFN-20) Texas Instruments DRV600 1 J10 2 pins / 1 row / 2.54mm Pitch Vertical Male Friction Molex lock Pin header Header 22-27-2021 4 J11 J12 J21 J22 Horizontal Female w. Switch Coax Phono socket Chunfeng RJ843-4W 1 SW1 Switch 6mm SMD Tactile Switch Switch Omron B3S-1000 1 PCB11 A832-PCB-001_2.00 / DRV600EVM Printed Circuit Board (ver. 2.00) Printline A832-PCB-001(2.00) PCB Specifications Table 9. PCB Specifications BOARD IDENTIFICATION A832-PCB-001(2.00) BOARD TYPE Double-sided plated-through board LAMINATE TYPE FR4 LAMINATE THICKNESS 1.6mm COPPER THICKNESS 35m (Include plating exterior layer) COPPER PLATING OF HOLES > 25m MINIMUM HOLE DIAMETER 0.3mm SILKSCREEN COMPONENT SIDE White--Remove silkscreen from solder area and pre-tinned areas SILKSCREEN SOLDER SIDE None SOLDER MASK COMPONENT SIDE Green SOLDER MASK SOLDER SIDE Green PROTECTIVE COATING Solder coating and chemical silver on free copper ELECTRICAL TEST PCB must be electrally tested MANUFACTURED TO PERFAG 2E (www.perfag.dk) APERTURE TABLE PERFAG 10A (www.perfag.dk) BOARD SIZE 60mm x 50mm COMMENTS See drill information file (A832-PCB-001 (DrillDrawing).pdf) in the gerber file zip, available in the EVM tool folder. SLOU205 - July 2007 Submit Documentation Feedback DRV600EVM User's Guide 13 www.ti.com Design Documentation 6.4 PCB Layout Figure 17 through Figure 19 show the printed circuit board (PCB) schematics. The Gerber files are available for download through the DRV600EVM tool folder on www.ti.com. Note: Board layouts are not to scale. These figures are intended to show how the board is laid out; they are not intended to be used for manufacturing DRV600EVM PCBs. Figure 17. DRV600EVM PCB Component Side (Top) Figure 18. PCB Top Layer Figure 19. PCB Bottom Layer 14 DRV600EVM User's Guide SLOU205 - July 2007 Submit Documentation Feedback 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. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives. Should this evaluation board/kit not meet the specifications indicated in the User's Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI's environmental and/or safety programs, please contact the TI application engineer or visit www.ti.com/esh. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used. FCC Warning 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. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright (c) 2007, Texas Instruments Incorporated EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 1.8 V to 4.5 V and the output voltage range of 2 Vrms. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures greater than 85C. The EVM is designed to operate properly with certain components above 85C as long as the input and output ranges are maintained. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified using the EVM schematic located in the EVM User's Guide. 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