Texas Instruments DRV602EVM2 Скачать руководство пользователя страница 1 | Manualshive

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Texas Instruments DRV602EVM2 Скачать руководство пользователя страница 1

User's Guide

SLOU248A – December 2008 – Revised January 2009

DRV602EVM2

DRV602EVM2

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.

Contents

1

......................................................................................................................

2

Quick Setup

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3

On/Off Sequence

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4

Component Selection

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5

Layout Recommendations

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6

DRV602EVM2 Performance

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7

Related Documentation from Texas Instruments

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8

Design Documentation

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List of Figures

1

DRV602EVM2 Functional Block Diagram

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2

Power-Up/-Down Sequence

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3

Second-Order, Active Low-Pass Filter

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4

Differential Input, Second-Order Active Low-Pass Filter

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5

THD+N versus Voltage

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6

THD+N versus Frequency

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7

FFT Spectrum with –60-dBFS Tone

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8

Channel Separation

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9

Frequency Response

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10

Pop/Click (Enable)

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All other trademarks are the property of their respective owners.

SLOU248A – December 2008 – Revised January 2009

DRV602EVM2

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Содержание DRV602EVM2

Страница 1: ...mentation from Texas Instruments 12 8 Design Documentation 12 List of Figures 1 DRV602EVM2 Functional Block Diagram 3 2 Power Up Down Sequence 4 3 Second Order Active Low Pass Filter 5 4 Differential...

Страница 2: ...lectrostatic discharge ESD protection The DRV602 also has built in shutdown control for pop free on off control Using the DRV602 in audio product applications can reduce component counts considerably...

Страница 3: ...s 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 d...

Страница 4: ...s given in Table 2 may cause permanent damage to your hardware For minimum click and pop interference during device power on and power off the DRV602 Enable pin pin 5 should be held low primarily beca...

Страница 5: ...is also possible with the DRV602 the EVM is configured as a 40 kHz second order active Butterworth filter to accomplish this filtering using an MFB Multiple Feed Back topology Furthermore the DRV602...

Страница 6: ...capacitance and inductance from the PCB layout can affect the phase margin Therefore we recommend adding CX The single ended input second order filter described in Section 4 3 can easily be extended t...

Страница 7: ...key parametric areas Table 4 through Table 7 summarize the EVM specifications Note All electrical and audio specifications are typical values Table 4 General Test Conditions 1 General Test Conditions...

Страница 8: ...015 20 Hz to 20 kHz Noise limited THD N 100 k 2 VRMS 0 050 20 Hz to 20 kHz Dynamic range 102 dB Ref 3 VRMS A weighted AES17 filter Noise voltage 18 VRMS A weighted AES17 filter DC offset 5 mV No sign...

Страница 9: ...dB 0 5 10 15 20 25 Frequency kHz www ti com DRV602EVM2 Performance Figure 6 illustrates characteristic performance for THD N versus frequency Figure 6 THD N versus Frequency For the FFT plot shown in...

Страница 10: ...5 0 5 10 15 20 25 30 35 40 dB dB DRV602EVM2 Performance www ti com Figure 8 illustrates the channel separation The output signal and the reference voltage are both 2 VRMS while the load is 2 5 k Figur...

Страница 11: ...nted in a time domain domain For Figure 10 the power supply is applied and then the shutdown signal is released The shutdown signal triggers the measuring system Figure 10 Pop Click Enable As with Sec...

Страница 12: ...INPUT Output RIGHT INPUT GND J15 Header 1 2 EN GND SW11 Switch 1 3 6 4 5 2 AMP ON OFF Power GND 3 3V C20 150pF 2 1 GND U13 TPS3825 33 RESET 1 GND 2 RESET 3 MR 4 VDD 5 GND D11 Green R19 330R 1 2 GND U1...

Страница 13: ...BC Components 0603N150K500NT C28 Capacitor 3 C20 C21 C22 Ceramic 150 pF 50V 10 NP0 0603 BC Components 0603N151K500NT Capacitor 2 C11 C12 Electrolytic 10 F 16V 20 Aluminium Panasonic ECA1CM100 2mm 5mm...

Страница 14: ...plating of holes 25 m Minimum hole diameter 0 3 mm Silkscreen component side White remove silkscreen from solder and pre tinned areas Silkscreen solder side None Soldermask component side Green Solde...

Страница 15: ...d layout are illustrated in Figure 14 Figure 15 and Figure 16 respectively 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...

Страница 16: ...Design Documentation www ti com Figure 15 DRV602EVM2 PCB Top Layer Figure 16 DRV602EVM2 PCB Bottom Layer 16 DRV602EVM2 SLOU248A December 2008 Revised January 2009 Submit Documentation Feedback...

Страница 17: ...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...

Страница 18: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

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