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PCM2705CDBR
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PCM2705CDBR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital-to-Analog Converter (DAC)
  • Characteristics: High-performance audio DAC with USB interface
  • Package: 28-pin SSOP (Shrink Small Outline Package)
  • Essence: Converts digital audio signals from a computer or other USB host device into analog audio signals for playback through headphones or speakers
  • Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel

Specifications

  • Resolution: 16-bit
  • Sampling Rate: Supports up to 48 kHz
  • Interface: USB 1.1 Full-Speed
  • Output: Stereo analog output
  • SNR (Signal-to-Noise Ratio): 98 dB
  • THD+N (Total Harmonic Distortion + Noise): 0.01%
  • Power Supply: 5V DC

Pin Configuration

The PCM2705CDBR has a total of 28 pins. The pin configuration is as follows:

  1. VDD - Power supply voltage
  2. GND - Ground
  3. D+ - USB data positive
  4. D- - USB data negative
  5. SDA - I2C serial data input/output
  6. SCL - I2C serial clock input
  7. LRCK - Left/Right Clock
  8. BCK - Bit Clock
  9. MCLK - Master Clock
  10. AGND - Analog ground
  11. AVCC - Analog power supply voltage
  12. VOUTL - Left channel analog output
  13. VOUTR - Right channel analog output 14-28. Reserved for other functions

Functional Features

  • USB audio streaming: Allows direct connection to a computer or USB host device for audio playback
  • High-quality digital-to-analog conversion: Provides accurate and detailed audio reproduction
  • Low power consumption: Suitable for portable audio devices
  • Integrated headphone amplifier: Enables direct headphone connection without the need for an external amplifier
  • I2C control interface: Allows for easy configuration and control of various settings

Advantages and Disadvantages

Advantages: - Easy integration with USB host devices - High-resolution audio output - Low power consumption - Compact package size - Built-in headphone amplifier

Disadvantages: - Limited sampling rate support (up to 48 kHz) - Requires external components for additional functionality (e.g., volume control)

Working Principles

The PCM2705CDBR operates by receiving digital audio data from a computer or USB host device through the USB interface. It then performs digital-to-analog conversion using its internal DAC circuitry. The converted analog audio signals are then amplified and output through the left and right channels.

Detailed Application Field Plans

The PCM2705CDBR is commonly used in various audio applications, including:

  1. USB audio interfaces
  2. Portable media players
  3. USB-powered speakers
  4. Headphone amplifiers
  5. Home theater systems
  6. Car audio systems

Alternative Models

  1. PCM2704CDBR: Similar to PCM2705CDBR but without the integrated headphone amplifier.
  2. PCM2706CDBR: Upgraded version with support for higher sampling rates (up to 96 kHz) and additional features.

These alternative models provide flexibility based on specific application requirements.

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技術ソリューションにおける PCM2705CDBR の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of PCM2705CDBR:

  1. Q: What is PCM2705CDBR? A: PCM2705CDBR is a USB audio codec with an integrated DAC (Digital-to-Analog Converter) and ADC (Analog-to-Digital Converter).

  2. Q: What are the key features of PCM2705CDBR? A: The key features include USB connectivity, stereo audio input/output, support for various audio formats, low power consumption, and built-in headphone amplifier.

  3. Q: How can I connect PCM2705CDBR to my system? A: PCM2705CDBR can be connected to your system via a USB interface. It requires a USB cable to connect to a host device such as a computer or a microcontroller.

  4. Q: What audio formats does PCM2705CDBR support? A: PCM2705CDBR supports various audio formats including PCM, MP3, and WMA.

  5. Q: Can PCM2705CDBR be used for both audio playback and recording? A: Yes, PCM2705CDBR can be used for both audio playback and recording. It has both DAC and ADC capabilities.

  6. Q: Does PCM2705CDBR require external power supply? A: No, PCM2705CDBR can be powered directly from the USB bus. It does not require an external power supply.

  7. Q: What is the maximum sampling rate supported by PCM2705CDBR? A: PCM2705CDBR supports a maximum sampling rate of 48 kHz.

  8. Q: Can PCM2705CDBR be used in portable audio devices? A: Yes, PCM2705CDBR is suitable for portable audio devices due to its low power consumption and compact form factor.

  9. Q: Does PCM2705CDBR have any built-in audio processing features? A: No, PCM2705CDBR does not have built-in audio processing features. It primarily focuses on audio conversion and connectivity.

  10. Q: Are there any evaluation boards or development kits available for PCM2705CDBR? A: Yes, Texas Instruments provides evaluation boards and development kits for PCM2705CDBR, which can help in the prototyping and testing of audio solutions.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.