PCM1728EG4

Overview

Category: Integrated Circuit (IC)

Use: Digital-to-Analog Converter (DAC)

Characteristics: - High-performance audio DAC - Low power consumption - 24-bit resolution - Supports sampling rates up to 192 kHz - Differential current output - Wide dynamic range and low distortion - Suitable for high-fidelity audio applications

Package: SSOP-20

Essence: PCM1728EG4 is a high-quality audio DAC that converts digital audio signals into analog signals with exceptional accuracy and fidelity.

Packaging/Quantity: The PCM1728EG4 is typically sold in reels of 250 units.

Specifications

• Resolution: 24-bit
• Sampling Rate: Up to 192 kHz
• Output Type: Differential Current Output
• Dynamic Range: >110 dB
• Total Harmonic Distortion + Noise (THD+N): <0.001%
• Power Supply Voltage: 3.3 V
• Power Consumption: 10 mW (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The PCM1728EG4 features a SSOP-20 package with the following pin configuration:

1. VCOM: Common Mode Voltage Reference
2. AVDD: Analog Power Supply
3. AGND: Analog Ground
4. IOUTL: Negative Current Output
5. IOUTR: Positive Current Output
6. FS: Frame Synchronization Input
7. SDIN: Serial Data Input
8. SCLK: Serial Clock Input
9. MUTE: Mute Control Input
10. DEEMPH: De-emphasis Control Input
11. VREF: Reference Voltage Input
12. DVDD: Digital Power Supply
13. DGND: Digital Ground
14. BICK: Bit Clock Input
15. LRCK: Left/Right Clock Input
16. SDOUT: Serial Data Output
17. VCOM: Common Mode Voltage Reference
18. AVDD: Analog Power Supply
19. AGND: Analog Ground
20. IOUTL: Negative Current Output

Functional Features

• High-resolution audio conversion with low distortion and noise
• Supports various digital audio formats (e.g., PCM, DSD)
• Built-in digital filters for enhanced sound quality
• On-chip voltage reference for accurate conversion
• Mute control for seamless audio playback control
• De-emphasis control for compatibility with different audio sources
• Differential current output for improved noise immunity

Advantages and Disadvantages

Advantages: - High-quality audio conversion - Wide dynamic range - Low power consumption - Compact package size - Suitable for high-fidelity audio applications

Disadvantages: - Limited availability of alternative models - Relatively higher cost compared to lower-end DACs

Working Principles

The PCM1728EG4 utilizes advanced digital-to-analog conversion techniques to accurately reproduce digital audio signals as analog waveforms. It employs a combination of oversampling, filtering, and current output stages to achieve high-resolution audio conversion with minimal distortion and noise.

The digital audio data is received through the serial input interface and synchronized with the clock signals. The PCM1728EG4 then processes the data using internal digital filters and converts it into a continuous analog waveform. The resulting analog signal is provided as a differential current output, which can be further amplified and filtered to obtain the desired audio output.

Detailed Application Field Plans

The PCM1728EG4 is widely used in various audio applications that require high-fidelity sound reproduction. Some of the common application fields include:

1. Professional Audio Equipment:

   • Studio monitors
   • Mixing consoles
   • Digital audio workstations

2. Consumer Audio Devices:

   • High-end audio players
   • Home theater systems
   • Soundbars

3. Automotive Audio Systems:

   • Car infotainment systems
   • Amplifiers
   • Head units

4. Telecommunications:

   • VoIP phones
   • Conference room audio systems
   • Audio conferencing equipment

Alternative Models

While the PCM1728EG4 is a highly capable audio DAC, there are alternative models available in the market that offer similar functionality. Some of the notable alternatives include:

1. PCM1794A: 24-bit, 192 kHz, 8-channel audio DAC with differential current output.
2. CS4398: 24-bit, 192 kHz, stereo audio DAC with differential voltage output.
3. AK4490EQ: 32-bit, 768 kHz, stereo audio DAC with differential current output.

These alternative models can be considered based on specific application requirements and design considerations.

In conclusion, the PCM1728EG4 is a high-performance audio DAC that offers exceptional sound quality and versatility for various audio applications. Its advanced features, compact