PCM1791ADBG4

Product Overview

• Category: Digital-to-Analog Converter (DAC)
• Use: Converts digital audio signals into analog signals for high-quality audio playback
• Characteristics: High-resolution audio, low distortion, wide dynamic range
• Package: DBG package
• Essence: Provides accurate and precise conversion of digital audio signals
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Resolution: Up to 24-bit
• Sampling Rate: Up to 192 kHz
• Signal-to-Noise Ratio: >120 dB
• Total Harmonic Distortion: <0.001%
• Output Voltage: 2 Vrms (RMS)
• Power Supply: 3.3 V or 5 V

Pin Configuration

The PCM1791ADBG4 has the following pin configuration:

1. VCC: Power supply voltage
2. GND: Ground reference
3. SDATA: Serial data input
4. LRCK: Left/right channel clock
5. BCK: Bit clock
6. MUTE: Mute control
7. OSF: Oversampling filter selection
8. DEM: De-emphasis control
9. AVCC: Analog power supply voltage
10. AGND: Analog ground reference
11. VOUTL: Left channel analog output
12. VOUTR: Right channel analog output

Functional Features

• High-resolution audio playback with up to 24-bit resolution
• Low distortion and wide dynamic range for accurate sound reproduction
• Supports multiple sampling rates up to 192 kHz
• Integrated oversampling filter for improved audio quality
• De-emphasis control for handling pre-emphasized audio sources
• Mute control for convenient audio playback management

Advantages and Disadvantages

Advantages: - High-resolution audio playback for enhanced audio quality - Low distortion and wide dynamic range for accurate sound reproduction - Supports multiple sampling rates for versatile audio applications - Integrated oversampling filter improves audio quality - De-emphasis control allows handling of pre-emphasized audio sources - Mute control provides convenient audio playback management

Disadvantages: - Requires external power supply for operation - Limited output voltage range may not be suitable for all audio systems

Working Principles

The PCM1791ADBG4 operates by receiving digital audio signals through the SDATA pin. It then converts these signals into analog form using a high-resolution DAC. The oversampling filter helps improve the audio quality by reducing noise and distortion. The de-emphasis control allows the DAC to handle pre-emphasized audio sources, ensuring accurate playback. The resulting analog audio signals are then available at the left and right channel outputs (VOUTL and VOUTR).

Detailed Application Field Plans

The PCM1791ADBG4 is commonly used in various audio applications, including:

1. High-end audio systems
2. Professional audio equipment
3. Home theater systems
4. Digital audio workstations
5. Automotive audio systems

Alternative Models

• PCM1792A: Similar specifications with improved performance
• PCM1794A: Higher resolution and lower distortion
• PCM1796: Lower cost option with good performance

Note: This is not an exhaustive list, and there are other alternative models available in the market.

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