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USB Interface MP3/WAV recording/playing solution |
- OTG15H is MP3/WAV recording/playing board supporting USB interface, can play and record many kinds of audio files. All components support the temperature of professional level (-40 ℃ to 80 ℃ ), it is suitable to be used to record and play music in any places. It can be used as the updated product of DR53E.
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Feature |
- On-board USB interface, support U disk, USB mobile harddisk, it is possible to connect USB card reader and internal read card chip at the same time.
- Support FAT12, FAT16, and FAT32 universal file formats of DOS or WINDOWS operating systems, completely compatible with computer.
- Support the multimedia files of MP3, WMA, and WAV all levels and all code flow rate. The highest code stream is 1.44Mbps.
- It is acceptable to record MP3 with different code stream or lossless compression mode, and use standard MP3 or MAV file format. At present, capacity-price ratio is very good, non-loss recording is better for recording effect.
- Use standard I 2 C communication interface, it is okay for users to connect other I 2 C chips in parallel without adding hardware interface extra.
- Support temperature detection.
- Built-in T9 strokes and Pinyin input methods, and user mainframe can use simple commands to modify the recorded filename easily.
- Built-in output eliminating noise control circuit, switching is more quiet, sound effect is more excellent, and it is more suitable for the advanced professional application.
- With LED display used to indicate playing states.
- Adopt single +5V power supply; inside generate +/-5V used to supply power for operational amplifier, which can get more wide dynamic range.
- Power supply, audio input and output, and communication interface are the same with DR53E's, OTG 15H can replace DR53E as updated product.
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Application field |
- It is easy for Home audio system to be upgraded to the system supporting computer music, which can improve the grade of product.
- The places that need to take long time to record music or speech signal.
- The places that need to play music because of bad environment.
- Other places playing and recording music.
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Technology parameter |
Items |
Minimum |
Normal |
Maximum |
Voltage |
4.5V |
+5V |
+5.5V |
current ( +5V ) (do not include CF card) |
260mA |
280mA |
300mA |
Output level 1KHz@0dB |
-1dB |
2V |
+1dB |
frequency response 20Hz ~ 20KHz |
-- |
+/-1dB |
-- |
Signal-to-noise @0dB(CCIR) |
88dB |
90dB |
93dB |
Working temperature |
-40 ℃ |
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80 ℃ |
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Related resource |
- CTB communication bus application attention.
- OTG series U disk file format application attention.
- OTG series software introduction.
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