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Recommended Media Player

www.ti.com

4

Recommended Media Player

The Apple

®

QuickTime

®

media player is recommended to perform listening tests because it does not

initiate or terminate USB communications abruptly as does the Windows Media Player

®

. Abrupt signal

processing could result in a clicking sound on the headphone side. This type of click has been confirmed
to not be related to the TLV320DAC3202 device because no writing or reading of registers occurs during
this period of time to the device under test (DUT).

It is also suggested to not stop or pause the player in the middle of a large audio signal.

Users can download the QuickTime Player from the Apple website at

http://www.apple.com/quicktime/download/

.

5

Performance Testing

In order to evaluate the performance of the TLV320DAC3202, several uncompressed wave files (.wav)
have been developed; each plays for approximately 2 minutes.

Table 1

gives a description of these files.

Table 1. .WAV Test File Summary

Parameter

48kS/s Files

44.1kS/s Files

Idle Channel Noise

ICN_48kS.wav

ICN_44kS.wav

Dynamic Range

DR_48kS.wav

DR_44kS.wav

Crosstalk

CT_48kS.wav

CT_44kS.wav

0 dBFS THD

FS_48kS.wav

FS_44kS.wav

–3 dBFS THD

M3dBFS_48kS.wav

M3dBFS_44kS.wav

–20 dBFS THD

M20dBFS_48kS.wav

M20dBFS_44kS.wav

These wave files are generated with 24-bit data length and a tone setting of approximately 1-kHz. Simply
double-click on the .wav file and an active system media player opens to play the tone.

These wave files are available for download from the device product folder.

Some performance results captured on an Audio Precision system (AP 2722) with 48-kHz sampling wave
files are shown in

Figure 6

This type of measurement is done by connecting the 3.5-mm audio jack to the

Audio Precision unbalanced BNC inputs.

Figure 6. AP Performance Testing

6

TLV320DAC3202EVM

SLAU327 – October 2010

Submit Documentation Feedback

Copyright © 2010, Texas Instruments Incorporated

Summary of Contents for TLV320DAC3202EVM

Page 1: ...ts 3 2 3 DC Ampere Meter Connection 4 3 Getting Started 5 4 Recommended Media Player 6 5 Performance Testing 6 6 Generating Wave Files 7 7 Schematic and BOM 8 7 1 Schematic 8 7 2 Bill of Materials 9 L...

Page 2: ...industry standard formats such as I2 S and PCM Volume setting data width and sampling rate are configurable for optimum flexibility and efficiency The headset power control automatically adjusts the r...

Page 3: ...s The bottom side of the EVM contains a pair of low dropout regulators LDOs to power a TAS1020B USB streaming controller The bottom side also features a 6 MHz oscillator a 256k EEPROM a 3 5 mm audio j...

Page 4: ...y connecting the 3 pin header to the terminal as shown in Figure 3 This ampere meter is limited to less than 10 mA consequently playing music at a high volume could cause unpleasant sounds Figure 3 DC...

Page 5: ...listed when the EVM is detected Connect a set of headphones to the 3 5 mm audio jack and then start playing audio with the media player The type of media player used is described in more detail in Se...

Page 6: ...each plays for approximately 2 minutes Table 1 gives a description of these files Table 1 WAV Test File Summary Parameter 48kS s Files 44 1kS s Files Idle Channel Noise ICN_48kS wav ICN_44kS wav Dynam...

Page 7: ...p The compressed file contains three batch files that have been created double click the compressed file to automatically generate the wave files refer to Table 1 The three batch files perform these r...

Page 8: ...EE256_MSOP8 U3 EE256_MSOP8 WP 7 SCL 6 SDA 5 A1 2 A2 3 VCC 8 VSS 4 A0 1 C31 47nF C31 47nF R7 2 7K R7 2 7K C12 0 1uF 6 3V C12 0 1uF 6 3V R10 2 7K R10 2 7K C4 47pF 50V C4 47pF 50V DZ2S068C0L D2 DZ2S068C...

Page 9: ...RKF3091X Panasonic Ecg 18 1 R3 1 50 k 1 10W 1 150 V Resistor 0603 CR0603 10W 1501FT Venkel 19 2 R1 R2 27 4 k 1 16W 1 Resistor 0603 ERJ 3EKF27R4V Panasonic Ecg 20 1 R8 649 1 10W 1 Resistor 0603 RC0603F...

Page 10: ...ins 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...

Page 11: ...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...

Page 12: ...401 Building No 5 JiuGe Business Center Lane 2301 Yishan Rd Minhang District Shanghai China Sales Direct 86 21 6401 6692 Email amall ameya360 com QQ 800077892 Skype ameyasales1 ameyasales2 Customer Se...

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