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PCM1795DBR
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PCM1795DBR

Product Overview

Category: Digital-to-Analog Converter (DAC)

Use: The PCM1795DBR is a high-performance audio DAC designed for professional audio applications. It is commonly used in audio equipment such as digital audio players, home theater systems, and studio recording equipment.

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

Package: The PCM1795DBR is available in a small outline package (SOIC) with 28 pins.

Essence: The essence of the PCM1795DBR lies in its ability to convert digital audio signals into high-quality analog audio signals with exceptional accuracy and fidelity.

Packaging/Quantity: The PCM1795DBR is typically sold in reels containing 250 units per reel.

Specifications

  • Resolution: Up to 32-bit
  • Sampling Rate: Up to 192 kHz
  • Total Harmonic Distortion + Noise (THD+N): <0.0004%
  • Signal-to-Noise Ratio (SNR): >123 dB
  • Dynamic Range (DNR): >123 dB
  • Output Voltage: 2.1 Vrms (RMS)
  • Power Supply Voltage: 3.3 V
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PCM1795DBR has a total of 28 pins. Here is a detailed pin configuration:

  1. VCOM
  2. AVDD
  3. DVDD
  4. AGND
  5. DGND
  6. I2C_SCL
  7. I2C_SDA
  8. MUTE
  9. DEEMPH
  10. OSF
  11. BCK
  12. LRCK
  13. DATA
  14. SCLK
  15. SDOUT
  16. VOUTL
  17. VOUTR
  18. AGND
  19. DGND
  20. AVDD
  21. DVDD
  22. VCOM
  23. VREF
  24. AGND
  25. DGND
  26. AVDD
  27. DVDD
  28. VCOM

Functional Features

  • High-resolution audio playback: The PCM1795DBR supports up to 32-bit resolution, allowing for the reproduction of detailed and accurate audio.
  • Low distortion and noise levels: With a THD+N of less than 0.0004%, the PCM1795DBR ensures minimal distortion and noise interference in the audio signal.
  • Wide dynamic range: The DAC offers a dynamic range of over 123 dB, enabling the faithful reproduction of both soft and loud audio passages.
  • Support for various audio formats: The PCM1795DBR is compatible with a wide range of audio formats, including PCM, DSD, and DXD.
  • Flexible interface options: It provides multiple input interfaces such as I2S, left-justified, right-justified, and TDM, making it versatile for different audio systems.

Advantages and Disadvantages

Advantages: - High-resolution audio playback capability - Low distortion and noise levels - Wide dynamic range for accurate audio reproduction - Versatile interface options for compatibility with various systems

Disadvantages: - Requires external components for complete audio system integration - Higher cost compared to lower-end DACs

Working Principles

The PCM1795DBR operates by receiving digital audio data and converting it into analog signals using advanced digital-to-analog conversion techniques. It utilizes a combination of oversampling, filtering, and voltage output stages to ensure accurate and high-fidelity audio reproduction.

Detailed Application Field Plans

The PCM1795DBR finds applications in various professional audio systems, including: - High-end digital audio players - Home theater systems - Studio recording equipment - Professional audio mixing consoles - Broadcast and production equipment

Detailed and Complete Alternative Models

  1. PCM1796DBR: Similar to PCM1795DBR but with enhanced specifications.
  2. PCM1794DBR: Lower-cost alternative with slightly reduced performance.
  3. PCM1798DBR: Higher-performance DAC with improved dynamic range.

These alternative models offer different trade-offs in terms of cost, performance, and specific features, allowing users to choose the most suitable option for their requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av PCM1795DBR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of PCM1795DBR in technical solutions:

  1. Q: What is PCM1795DBR? A: PCM1795DBR is a high-performance audio digital-to-analog converter (DAC) chip manufactured by Texas Instruments.

  2. Q: What are the key features of PCM1795DBR? A: The key features of PCM1795DBR include 32-bit resolution, support for sampling rates up to 192kHz, dynamic range of 123dB, and low total harmonic distortion.

  3. Q: What applications can PCM1795DBR be used for? A: PCM1795DBR is commonly used in professional audio equipment, high-end consumer audio systems, digital mixing consoles, and audio interfaces.

  4. Q: How does PCM1795DBR connect to other components in an audio system? A: PCM1795DBR typically connects to a microcontroller or digital signal processor (DSP) through an I2S or SPI interface. It also requires external analog circuitry for output filtering and amplification.

  5. Q: Can PCM1795DBR handle multiple audio channels? A: Yes, PCM1795DBR supports up to 8 audio channels, making it suitable for multi-channel audio applications such as surround sound systems.

  6. Q: Does PCM1795DBR support different digital audio formats? A: Yes, PCM1795DBR supports various digital audio formats including PCM, DSD, and DoP (DSD over PCM).

  7. Q: What power supply requirements does PCM1795DBR have? A: PCM1795DBR requires a single power supply voltage ranging from 3.3V to 5V, making it compatible with standard digital logic levels.

  8. Q: Can PCM1795DBR be used in battery-powered devices? A: Yes, PCM1795DBR can be used in battery-powered devices as long as the power supply voltage requirements are met.

  9. Q: Are there any evaluation boards or development kits available for PCM1795DBR? A: Yes, Texas Instruments provides evaluation boards and development kits that include PCM1795DBR for easier prototyping and testing.

  10. Q: Where can I find more technical information about PCM1795DBR? A: You can refer to the datasheet and application notes provided by Texas Instruments for detailed technical information about PCM1795DBR.