PCM2902CDB

Product Overview

• Category: Integrated Circuit
• Use: Audio Codec
• Characteristics: High-quality audio conversion, USB interface
• Package: DIP (Dual In-line Package)
• Essence: Digital-to-Analog Converter (DAC) and Analog-to-Digital Converter (ADC)
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Resolution: 16-bit
• Sampling Rate: Up to 48 kHz
• Interface: USB 1.1
• Power Supply: 5V
• Operating Temperature: -40°C to +85°C

Pin Configuration

The PCM2902CDB has a total of 28 pins. The pin configuration is as follows:

1. VCC
2. GND
3. AGND
4. MICBIAS
5. LINE_INL
6. LINE_INR
7. MIC_IN
8. MIC_BIAS
9. BIAS
10. VREF
11. VBUS
12. DP
13. DM
14. XTI
15. XTO
16. NC
17. NC
18. NC
19. NC
20. NC
21. NC
22. NC
23. NC
24. NC
25. NC
26. NC
27. NC
28. NC

Functional Features

• High-quality audio conversion between digital and analog signals
• USB interface for easy connection to computers and other devices
• Supports 16-bit resolution for accurate audio reproduction
• Sampling rate of up to 48 kHz for high-fidelity sound
• Built-in microphone bias voltage for direct microphone connection

Advantages and Disadvantages

Advantages

• Compact and easy to integrate into audio systems
• USB interface eliminates the need for additional audio connectors
• High-quality audio conversion ensures accurate sound reproduction
• Supports various applications requiring digital-to-analog or analog-to-digital conversion

Disadvantages

• Limited to 16-bit resolution, may not be suitable for professional audio applications requiring higher resolution
• USB 1.1 interface may have limitations in terms of data transfer speed compared to newer USB standards

Working Principles

The PCM2902CDB is a digital audio codec that converts digital audio signals to analog and vice versa. It utilizes a USB interface to connect to a host device such as a computer. The digital audio data is received through the USB interface and processed by the internal DAC or ADC to convert it into an analog signal or digital data, respectively. The converted audio can then be outputted or inputted through the appropriate pins.

Detailed Application Field Plans

The PCM2902CDB is commonly used in various audio-related applications, including:

1. USB audio interfaces
2. USB microphones
3. USB sound cards
4. Audio recording and playback devices
5. Home theater systems
6. Portable audio players

Alternative Models

If the PCM2902CDB does not meet specific requirements, alternative models with similar functionality include:

1. PCM2704 - USB audio codec with 16-bit resolution and 48 kHz sampling rate.
2. PCM2904 - USB audio codec with 24-bit resolution and 96 kHz sampling rate.
3. CS4344 - Stereo audio codec with 24-bit resolution and 192 kHz sampling rate.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific application needs.

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