PCM1791ADBR

Product Overview

Category: Digital-to-Analog Converter (DAC)

Use: The PCM1791ADBR is a high-performance stereo audio DAC designed for professional audio applications. It converts digital audio signals into analog signals with exceptional accuracy and fidelity.

Characteristics: - High-resolution audio playback - Low distortion and noise levels - Wide dynamic range - Support for various audio formats - Flexible interface options

Package: The PCM1791ADBR is available in a small outline package (SOIC) with 28 pins.

Essence: The essence of the PCM1791ADBR lies in its ability to faithfully reproduce digital audio signals with high precision, ensuring an immersive and accurate audio experience.

Packaging/Quantity: The PCM1791ADBR is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Resolution: Up to 24-bit
• Sampling Rate: Up to 192 kHz
• Total Harmonic Distortion + Noise (THD+N): <0.001%
• Signal-to-Noise Ratio (SNR): >120 dB
• Dynamic Range (DNR): >120 dB
• Output Voltage: 2 Vrms (RMS)
• Power Supply Voltage: 5 V
• Power Consumption: 100 mW (typical)

Detailed Pin Configuration

The PCM1791ADBR features the following pin configuration:

1. VCOM: Common voltage reference
2. DGND: Digital ground
3. DVDD: Digital power supply
4. BCK: Bit clock input
5. DOUT: Serial data output
6. LRCK: Left/right channel clock input
7. MUTE: Mute control input
8. AVDD: Analog power supply
9. AGND: Analog ground
10. VOUTR: Right channel analog output
11. VOUTL: Left channel analog output 12-28. Reserved/Not connected

Functional Features

• High-resolution audio playback: The PCM1791ADBR supports up to 24-bit resolution, ensuring accurate reproduction of even the most intricate audio details.
• Low distortion and noise levels: With a THD+N of less than 0.001% and an SNR and DNR exceeding 120 dB, the PCM1791ADBR delivers pristine audio quality.
• Flexible interface options: The DAC offers multiple input formats, including I2S, left-justified, right-justified, and DSP modes, making it compatible with various audio sources.

Advantages and Disadvantages

Advantages: - High-resolution audio playback capability - Low distortion and noise levels for superior audio quality - Wide dynamic range for capturing subtle nuances in music - Versatile interface options for compatibility with different systems

Disadvantages: - Requires external components for complete audio system integration - Relatively higher power consumption compared to some other DACs

Working Principles

The PCM1791ADBR operates on the principle of converting digital audio signals into analog form using a combination of advanced digital signal processing techniques and high-quality analog circuitry. It utilizes a multi-bit delta-sigma architecture to achieve high-resolution audio playback.

Detailed Application Field Plans

The PCM1791ADBR finds applications in various professional audio fields, including: - Studio recording and mixing consoles - Digital audio workstations (DAWs) - High-end consumer audio systems - Professional audio interfaces - Musical instruments and synthesizers

Detailed and Complete Alternative Models

• PCM1792A: Similar to PCM1791ADBR but with enhanced specifications and features.
• PCM1794A: Higher-performance DAC with improved dynamic range and lower distortion levels.
• PCM1795: Multi-channel DAC suitable for surround sound applications.
• PCM1796: Lower-cost alternative with slightly reduced specifications.

These alternative models offer varying levels of performance and features to cater to different audio requirements and budgets.

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