PCM1803ADB

Product Overview

Category: Analog-to-Digital Converter (ADC)

Use: The PCM1803ADB is a high-performance stereo audio ADC designed for professional audio applications. It converts analog audio signals into digital format with exceptional accuracy and low distortion.

Characteristics: - High-resolution audio conversion - Low noise and distortion - Wide dynamic range - Sampling rates up to 96 kHz - Integrated digital filters - Flexible power supply options

Package: The PCM1803ADB comes in a small outline package (SOP) with 28 pins, making it suitable for compact audio equipment designs.

Essence: The essence of the PCM1803ADB lies in its ability to accurately convert analog audio signals into digital form while maintaining high fidelity and minimizing noise and distortion.

Packaging/Quantity: The PCM1803ADB is typically sold in reels or tubes containing multiple units. The exact quantity per package may vary depending on the supplier.

Specifications

• Resolution: Up to 24 bits
• Sampling Rates: 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz
• Signal-to-Noise Ratio (SNR): 105 dB
• Total Harmonic Distortion + Noise (THD+N): 0.002%
• Power Supply Voltage: 5 V
• Power Consumption: 50 mW (typical)

Pin Configuration

The PCM1803ADB has a total of 28 pins. Here is a detailed pin configuration:

1. AGND: Analog Ground
2. VREF: Reference Voltage Output
3. DVDD: Digital Power Supply
4. DGND: Digital Ground
5. BICK: Bit Clock Input
6. LRCK: Left/Right Clock Input
7. DIN: Serial Data Input
8. MCLK: Master Clock Input
9. VCC: Analog Power Supply
10. AOUTL: Left Channel Analog Output
11. AOUTR: Right Channel Analog Output 12-28. NC: No Connection

Functional Features

• High-resolution audio conversion with low noise and distortion.
• Integrated digital filters for improved audio quality.
• Flexible power supply options allow for compatibility with various systems.
• Supports multiple sampling rates for versatile applications.
• Easy integration into audio equipment due to its small package size.

Advantages and Disadvantages

Advantages: - High-quality audio conversion with low distortion. - Wide dynamic range for capturing subtle audio details. - Compact package size enables space-efficient designs. - Versatile power supply options enhance compatibility.

Disadvantages: - Limited to stereo audio conversion. - Higher cost compared to lower-end ADCs. - Requires external components for complete audio signal processing.

Working Principles

The PCM1803ADB utilizes a delta-sigma modulation technique to convert analog audio signals into digital form. It employs oversampling and noise shaping to achieve high resolution and minimize quantization noise. The integrated digital filters further enhance the audio quality by removing unwanted frequencies.

Detailed Application Field Plans

The PCM1803ADB is well-suited for various professional audio applications, including: - Audio recording interfaces - Digital mixing consoles - Musical instruments - Home theater systems - Audio measurement equipment

Its high-resolution conversion capabilities make it ideal for capturing and reproducing audio with exceptional fidelity.

Alternative Models

For those seeking alternative options, the following ADC models can be considered: - PCM1802ADB: Similar performance to PCM1803ADB but without integrated digital filters. - PCM1861: Higher-resolution ADC with additional features such as microphone preamplifiers. - CS5368: Competing ADC offering similar specifications and performance.

These alternatives provide flexibility in choosing the most suitable ADC for specific application requirements.

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