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PCM2904DBR
Product Overview
- Category: Integrated Circuit (IC)
- Use: Audio Codec
- Characteristics:
- High-quality audio conversion
- Low power consumption
- Small form factor
- Package: SSOP-28
- Essence: Digital-to-Analog Converter (DAC) and Analog-to-Digital Converter (ADC)
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Resolution: 16-bit
- Sampling Rate: Up to 48 kHz
- Number of Channels: 2 (Stereo)
- Interface: USB 2.0 Full-Speed
- Power Supply: 3.3V
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The PCM2904DBR has a total of 28 pins. The pin configuration is as follows:
- VBUS
- D+
- D-
- GND
- AGND
- AVDD
- DVDD
- LOUT
- ROUT
- MICBIAS
- MICIN
- MICAGC
- MICGND
- LINEINL
- LINEINR
- LINEOUTL
- LINEOUTR
- BCLK
- WCLK
- SDA
- SCL
- MUTE
- RESET
- OSC
- NC
- NC
- NC
- NC
Functional Features
- High-quality audio conversion with low distortion and noise
- USB bus-powered operation, eliminating the need for external power supply
- Built-in microphone bias voltage for direct connection of electret microphones
- Automatic gain control (AGC) for microphone input
- Line-level inputs and outputs for connecting external audio devices
- I2C interface for control and configuration
Advantages and Disadvantages
Advantages
- Compact size and low power consumption make it suitable for portable audio applications
- High-quality audio conversion ensures accurate reproduction of sound
- USB bus-powered operation simplifies the design and reduces component count
- Built-in microphone bias voltage eliminates the need for additional circuitry
Disadvantages
- Limited to 16-bit resolution, which may not be sufficient for some professional audio applications
- Sampling rate limited to 48 kHz, which may not meet the requirements of high-resolution audio formats
Working Principles
The PCM2904DBR is a digital audio codec that converts analog audio signals into digital data and vice versa. It utilizes a digital-to-analog converter (DAC) to convert digital audio data into analog signals for playback and an analog-to-digital converter (ADC) to convert analog audio signals into digital data for recording.
The device is powered by the USB bus, eliminating the need for an external power supply. It communicates with the host system through a USB 2.0 Full-Speed interface, allowing for easy integration into various audio systems.
Detailed Application Field Plans
The PCM2904DBR is commonly used in various audio applications, including:
- USB audio interfaces
- Portable audio players
- USB microphones
- Audio recording devices
- Sound cards
- Home theater systems
- Automotive audio systems
Its small form factor, low power consumption, and high-quality audio conversion make it ideal for these applications.
Detailed and Complete Alternative Models
- PCM2900CDBR: Similar features and specifications, but without microphone input and automatic gain control.
- PCM2902E: Similar features and specifications, but with additional digital audio inputs and outputs.
- PCM2704CDBR: Similar features and specifications, but with a lower sampling rate of 16 kHz.
These alternative models offer different functionalities and can be chosen based on specific application requirements.
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Перечислите 10 распространенных вопросов и ответов, связанных с применением PCM2904DBR в технических решениях.
Sure! Here are 10 common questions and answers related to the application of PCM2904DBR in technical solutions:
Q: What is PCM2904DBR? A: PCM2904DBR is a stereo audio codec with a USB interface, commonly used in audio applications.
Q: What are the key features of PCM2904DBR? A: PCM2904DBR features include 16-bit resolution, 48 kHz sampling rate, USB bus-powered operation, and integrated analog-to-digital and digital-to-analog converters.
Q: How can I connect PCM2904DBR to my system? A: PCM2904DBR can be connected to your system using its USB interface, which provides both data and power.
Q: Can PCM2904DBR be used for recording audio? A: Yes, PCM2904DBR can be used for recording audio as it has built-in analog-to-digital converters.
Q: Is PCM2904DBR compatible with both Windows and Mac operating systems? A: Yes, PCM2904DBR is compatible with both Windows and Mac operating systems as it uses standard USB audio drivers.
Q: Can PCM2904DBR be used in portable audio devices? A: Yes, PCM2904DBR can be used in portable audio devices due to its USB bus-powered operation and compact form factor.
Q: Does PCM2904DBR support headphone output? A: Yes, PCM2904DBR supports headphone output through its integrated digital-to-analog converter.
Q: Can PCM2904DBR be used in automotive audio systems? A: Yes, PCM2904DBR can be used in automotive audio systems as it operates within the automotive temperature range.
Q: Does PCM2904DBR support multiple audio channels? A: No, PCM2904DBR is a stereo audio codec and supports only two audio channels.
Q: Are evaluation boards available for PCM2904DBR? A: Yes, evaluation boards are available for PCM2904DBR, which can help in the development and testing of audio solutions.
Please note that these answers are general and may vary depending on specific application requirements.