PCM2903CDB

Product Overview

Category: Integrated Circuit (IC)

Use: The PCM2903CDB is a USB audio codec with a built-in USB interface. It provides a simple and cost-effective solution for adding USB audio functionality to various electronic devices.

Characteristics: - Compact size - Low power consumption - High-quality audio performance - Plug-and-play functionality - Supports multiple audio formats - Compatible with various operating systems

Package: PCM2903CDB is available in a small-sized, 28-pin SSOP (Shrink Small Outline Package) package.

Essence: The PCM2903CDB is designed to convert analog audio signals into digital format and vice versa, enabling seamless audio communication between electronic devices and computers via USB.

Packaging/Quantity: The PCM2903CDB is typically sold in reels containing a quantity of 250 units.

Specifications

• ADC (Analog-to-Digital Converter):

  • Resolution: 16-bit
  • Sampling Rate: Up to 48 kHz
  • Signal-to-Noise Ratio (SNR): >90 dB
  • Total Harmonic Distortion (THD): <0.01%

• DAC (Digital-to-Analog Converter):

  • Resolution: 16-bit
  • Sampling Rate: Up to 48 kHz
  • Signal-to-Noise Ratio (SNR): >90 dB
  • Total Harmonic Distortion (THD): <0.01%

• USB Interface:

  • USB Version: 2.0 Full-Speed
  • Audio Formats: Stereo, Mono
  • Operating Systems Compatibility: Windows, Mac OS, Linux

Pin Configuration

The PCM2903CDB has a total of 28 pins. Here is the detailed pin configuration:

1. VDD: Power Supply Voltage
2. VDD: Power Supply Voltage
3. AGND: Analog Ground
4. VREF: Reference Voltage Output
5. VCOM: Common Mode Voltage Output
6. MICBIAS: Microphone Bias Voltage
7. MICIN: Microphone Input
8. LINEINL: Left Channel Line Input
9. LINEINR: Right Channel Line Input
10. GND: Ground
11. BIAS: Bias Voltage Output
12. NC: No Connection
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. NC: No Connection
17. NC: No Connection
18. NC: No Connection
19. NC: No Connection
20. NC: No Connection
21. NC: No Connection
22. NC: No Connection
23. NC: No Connection
24. NC: No Connection
25. USBP: USB Positive Data Line
26. USBN: USB Negative Data Line
27. GND: Ground
28. VBUS: USB Bus Power

Functional Features

• USB Audio Streaming: The PCM2903CDB enables seamless audio streaming between electronic devices and computers via USB.
• Plug-and-Play Functionality: It supports plug-and-play functionality, allowing easy integration into various systems without the need for additional drivers.
• Multiple Audio Formats: The codec supports stereo and mono audio formats, providing flexibility in audio applications.
• Low Power Consumption: The PCM2903CDB is designed to operate with low power consumption, making it suitable for portable and battery-powered devices.

Advantages and Disadvantages

Advantages: - Compact size allows for easy integration into small-sized devices. - High-quality audio performance ensures clear and accurate sound reproduction. - Plug-and-play functionality simplifies the installation process. - Compatibility with multiple operating systems enhances versatility.

Disadvantages: - Limited to USB audio applications, not suitable for other types of data transfer. - Requires external components for complete audio system integration.

Working Principles

The PCM2903CDB operates by converting analog audio signals into digital format using the built-in ADC. It then transmits the digital audio data to a computer via the USB interface. On the receiving end, it converts digital audio data from the computer back into analog format using the DAC. This allows for seamless audio communication between electronic devices and computers.

Detailed Application Field Plans

The PCM2903CDB finds application in various fields, including but not limited to: - USB audio interfaces - USB microphones - USB speakers - USB sound cards - Portable audio devices

Alternative Models

Here are some alternative models that offer similar functionality to the PCM2903CDB: - PCM2704: USB audio codec with integrated DAC and headphone amplifier. - PCM2900: USB audio codec with integrated ADC and DAC. - CS4344: Stereo audio DAC with USB interface.

These alternative models can be considered based on specific requirements and application needs.

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