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User's Guide

SLOU288 – February 2010

DRV604PWPEVM

DRV604PWPEVM

This user's guide describes the operation of the evaluation module for the DRV604. The user’s guide also
provides measurement data and design information like schematic, BOM and PCB layout.

Contents

1

Overview

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2

2

Quick Setup Guide

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4

3

On/Off Sequence

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4

4

Component Selection

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5

5

Layout Recommendations

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7

6

DRV604PWPEVM Performance

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7

7

Related Documentation from Texas Instruments

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15

8

Design Documentation

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16

List of Figures

1

DRV604PWPEVM EVM Photo

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3

2

Power-Up/-Down Sequence

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4

3

2

nd

Order Active Low-Pass Filter, SE Input

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5

4

THD+N vs Voltage (Line Output)

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9

5

THD+N vs Power (HeadPhone Output)

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9

6

THD+N vs Frequency (Line Output)

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10

DirectPath, FilterPro are trademarks of Texas Instruments.

1

SLOU288 – February 2010

DRV604PWPEVM

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Copyright © 2010, Texas Instruments Incorporated

Summary of Contents for DRV604PWPEVM

Page 1: ...tion 5 5 Layout Recommendations 7 6 DRV604PWPEVM Performance 7 7 Related Documentation from Texas Instruments 15 8 Design Documentation 16 List of Figures 1 DRV604PWPEVM EVM Photo 3 2 Power Up Down Se...

Page 2: ...he device is ideal for single supply electronics where size and cost are critical design parameters Designed using TI s patented DirectPath technology The DRV604 is capable of driving 2 Vrms into a 5k...

Page 3: ...soundcards This document covers EVM specifications audio performance measurements graphs and design documentation that includes schematics parts list and layout design Figure 1 DRV604PWPEVM EVM Photo...

Page 4: ...PWPEVM board using one DRV604PWP If either of these items is missing contact the Texas Instruments Product Information Center nearest you to inquire about a replacement 2 3 Power Supply Setup To power...

Page 5: ...s possible to the device VDD leads works best Placing this decoupling capacitor close to the DRV604 is important for the performance of the amplifier For filtering lower frequency noise signals a 10 F...

Page 6: ...pF 15 mF 8 2 k 12 k 30 k 2 V V 1 6 Hz 40 kHz 33 pF 330 pF 6 8 mF 15 k 30 k 47 k 2 V V 1 6 Hz 30 kHz 47 pF 470 pF 6 8 mF 15 k 30 k 43 k 3 33 V V 1 2 Hz 40 kHz 33 pF 470 pF 10 mF 13 k 43 k 43 k 10 V V...

Page 7: ...induced hum the AGND PGND and the audio input GND tracks should be routed as star ground connections this is the concept used on DRV604PWPEVM 6 DRV604PWPEVM Performance Table 4 General Test Conditions...

Page 8: ...nce Analog Input Notes Conditions THD N 32 0 4 mWrms 0 005 1 kHz Noise limited THD N 32 4 0 mWrms 0 010 1 kHz Noise limited THD N 32 40 mWrms 0 030 1 kHz Ref 40mWrms at 32 A weighted Dynamic range 103...

Page 9: ...05 0 1 0 2 0 5 1 5 THD N Total Harmonic Distortion Noise Load 32 W In Phase Out of Phase www ti com DRV604PWPEVM Performance 6 1 THD N vs Voltage and Power Blue 10 k Figure 4 THD N vs Voltage Line Ou...

Page 10: ...0 1 0 2 0 5 1 5 THD N Total Harmonic Distortion Noise Load 32 AES17 Filter W 20 mWRMS 2 mWRMS DRV604PWPEVM Performance www ti com 6 2 THD N vs Frequency Green 200mVrms Blue 2Vrms Load Impedance 5k Fig...

Page 11: ...DRV604PWPEVM Performance 6 3 FFT Spectrum with 60dBFS Tone Reference voltage is 2Vrms FFT size 16k Figure 8 FFT Spectrum with 60 dBFS Tone Line Output Vertical spacer Figure 9 FFT Spectrum with 60 dBF...

Page 12: ...z 0 dB 40 mW RMS Right to Left Left to Right DRV604PWPEVM Performance www ti com 6 4 Channel Separation Comments Green 0dB 2vrms Blue Left to right Red Right to left Figure 10 Channel Separation Line...

Page 13: ...z dBrA dB www ti com DRV604PWPEVM Performance 6 5 Frequency Response 1Vrms output 10k load 500kHz measurement filter 2Vrms reference Figure 12 Frequency Response Line Output 13 SLOU288 February 2010 D...

Page 14: ...lts are presented in time domain Load 5 k Power supply is applied and then the shutdown signal is released The enable signal is used to trigger the measuring system Figure 13 Pop Click Enable 6 7 Pop...

Page 15: ...tailed descriptions of the integrated circuits used in the design of the DRV604PWPEVM The data manuals can be obtained at the URL http www ti com Table 9 Related Documentation Part Number Literature N...

Page 16: ...03 100K U1 DRV604PWP TSSOP28 PWP 15 16 17 18 19 20 21 22 23 24 14 13 12 11 10 9 8 7 6 5 28 27 26 25 4 3 2 1 R6 0603 100K 0 5in 0 5in 0 5in 0 5in INLD_L 3 2 1 RCA Red RCA Black 3 2 1 INLD_R INHP_L 1 2...

Page 17: ...1 RESISTORS RC0603JR 074R7L 4 R16 R17 311 4 7GRCT RESISTOR SMD0603 4 7 R 5 THICK FILM 1 10W DIGI KEY YAGEO R19 R20 RC0603JR 0710RL 4 R13 R14 311 10GRCT RESISTOR SMD0603 THICK FILM 10 R 5 1 10W DIGI KE...

Page 18: ...ble on the EVM page for download Figure 16 DRV604PWPEVM PCB Component Placement Figure 17 DRV604PWPEVM PCB Top Layer Figure 18 DRV604PWPEVM PCB Bottom Layer 18 DRV604PWPEVM SLOU288 February 2010 Submi...

Page 19: ...duct 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 enginee...

Page 20: ...h statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury...

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