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PCM2705DBG4
Product Overview
Category: Integrated Circuit (IC)
Use: The PCM2705DBG4 is a digital-to-analog converter (DAC) and USB interface controller. It is designed to convert digital audio signals from a computer or other digital sources into high-quality analog audio output.
Characteristics: - Compact size and low power consumption - Supports various audio formats, including 16-bit and 24-bit PCM - USB bus-powered operation - Built-in headphone amplifier - Compatible with Windows, Mac, and Linux operating systems
Package: The PCM2705DBG4 is available in a small outline package (SOP) with 28 pins.
Essence: The essence of the PCM2705DBG4 lies in its ability to provide a convenient and cost-effective solution for integrating USB audio functionality into various electronic devices.
Packaging/Quantity: The PCM2705DBG4 is typically sold in reels containing 250 units per reel.
Specifications
- Resolution: Up to 24-bit
- Sampling Rate: Up to 48 kHz
- Signal-to-Noise Ratio (SNR): 98 dB
- Total Harmonic Distortion (THD+N): 0.006%
- Output Voltage: 2 Vrms (typical)
- Power Supply Voltage: 3.3 V
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The PCM2705DBG4 has 28 pins arranged as follows:
1 GND Ground
2 VDD Power Supply Voltage
3 VDDA Analog Power Supply Voltage
4 AGND Analog Ground
5 VOUTL Left Channel Analog Output
6 VOUTR Right Channel Analog Output
7 VCOM Common Mode Voltage
8 VREF Reference Voltage
9 VBUS USB Bus Power
10 D+ USB Data Plus
11 D- USB Data Minus
12 SDA I2C Serial Data
13 SCL I2C Serial Clock
14 MUTE Mute Control
15 BICK Bit Clock Output
16 LRCK Left/Right Clock Output
17 SDIN Serial Data Input
18 SDOUT Serial Data Output
19 XTALI Crystal Oscillator Input
20 XTALO Crystal Oscillator Output
21 NC No Connection
22 NC No Connection
23 NC No Connection
24 NC No Connection
25 NC No Connection
26 NC No Connection
27 NC No Connection
28 NC No Connection
Functional Features
The PCM2705DBG4 offers the following functional features:
USB Audio Interface: It provides a seamless interface between a computer and audio devices, allowing for easy playback of digital audio files.
Digital-to-Analog Conversion: The PCM2705DBG4 converts digital audio signals into analog audio output with high precision and fidelity.
Headphone Amplifier: It includes a built-in headphone amplifier, enabling direct connection to headphones or earphones without the need for an external amplifier.
Low Power Consumption: The device operates on low power, making it suitable for portable and battery-powered applications.
Advantages and Disadvantages
Advantages: - Compact size and low power consumption make it ideal for portable devices. - USB bus-powered operation eliminates the need for an external power supply. - Wide compatibility with different operating systems enhances its versatility. - High-quality audio output ensures an excellent listening experience.
Disadvantages: - Limited sampling rate and resolution compared to higher-end DACs. - Lack of advanced features and customization options found in more expensive models.
Working Principles
The PCM2705DBG4 operates by receiving digital audio data from a computer or other digital sources via the USB interface. It then processes and converts this digital data into analog audio signals using its built-in DAC. The converted analog audio signals are then amplified and output through the left and right channels.
Application Field Plans
The PCM2705DBG4 finds applications in various fields, including:
Consumer Electronics: It can be used in portable media players, smartphones, tablets, and other audio devices to provide high-quality audio output.
Personal Computers: The PCM2705DBG4 enables computers to deliver superior audio performance by serving as an external USB audio interface.
Automotive Audio Systems: It can be integrated into car audio systems to enhance the audio quality and provide USB connectivity for digital audio playback.
Home Theater Systems: The PCM2705DBG4 can be utilized in home theater receivers and amplifiers to enable USB audio playback and improve overall sound reproduction.
Alternative Models
Some alternative models that offer similar functionality to the PCM2705DBG4 include
Seznam 10 běžných otázek a odpovědí souvisejících s aplikací PCM2705DBG4 v technických řešeních
Sure! Here are 10 common questions and answers related to the application of PCM2705DBG4:
Q: What is PCM2705DBG4? A: PCM2705DBG4 is a USB audio codec with an integrated DAC (Digital-to-Analog Converter) and ADC (Analog-to-Digital Converter).
Q: What are the key features of PCM2705DBG4? A: The key features include USB connectivity, stereo audio input/output, support for various audio formats, low power consumption, and built-in headphone amplifier.
Q: How can I connect PCM2705DBG4 to my system? A: PCM2705DBG4 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.
Q: What audio formats does PCM2705DBG4 support? A: PCM2705DBG4 supports various audio formats including PCM, MP3, and WMA.
Q: Can PCM2705DBG4 be used for both audio playback and recording? A: Yes, PCM2705DBG4 can be used for both audio playback and recording. It has both DAC and ADC capabilities.
Q: Does PCM2705DBG4 require external power supply? A: No, PCM2705DBG4 can be powered directly from the USB bus. It does not require an external power supply.
Q: What is the maximum sampling rate supported by PCM2705DBG4? A: PCM2705DBG4 supports a maximum sampling rate of 48 kHz.
Q: Can PCM2705DBG4 be used in portable audio devices? A: Yes, PCM2705DBG4 is suitable for portable audio devices due to its low power consumption and compact form factor.
Q: Does PCM2705DBG4 have any built-in audio processing features? A: No, PCM2705DBG4 does not have built-in audio processing features. It is primarily a USB audio codec.
Q: Are there any evaluation boards or development kits available for PCM2705DBG4? A: Yes, Texas Instruments provides evaluation boards and development kits for PCM2705DBG4 to help with the design and testing process.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.