PCM1748EG4

Product Overview

• Category: Digital-to-Analog Converter (DAC)
• Use: Converts digital audio signals into analog audio signals
• Characteristics: High-resolution audio conversion, low distortion, wide dynamic range
• Package: 20-pin SSOP package
• Essence: Provides high-quality audio conversion for various applications
• 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
• Total Harmonic Distortion + Noise (THD+N): <0.002%
• Signal-to-Noise Ratio (SNR): >100 dB
• Output Voltage Range: 0 to 2.1 Vrms
• Power Supply Voltage: 3.3 V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The PCM1748EG4 has a total of 20 pins. The pin configuration is as follows:

1. VCC: Power supply voltage
2. GND: Ground
3. BCK: Bit clock input
4. DIN: Serial data input
5. LRCK: Left/right clock input
6. MUTE: Mute control input
7. DEEMPH: De-emphasis control input
8. VOUTL: Analog output - left channel
9. VCOM: Common voltage for analog outputs
10. VOUTR: Analog output - right channel
11. AVDD: Analog power supply voltage
12. AGND: Analog ground
13. DVDD: Digital power supply voltage
14. DGND: Digital ground 15-20: Reserved

Functional Features

• High-resolution audio conversion for accurate reproduction of digital audio signals
• Low distortion and noise for improved audio quality
• Wide dynamic range for capturing subtle details in audio
• Mute control for convenient audio playback control
• De-emphasis control for compatibility with different audio sources

Advantages and Disadvantages

Advantages: - High-resolution audio conversion ensures accurate reproduction of digital audio signals - Low distortion and noise contribute to improved audio quality - Wide dynamic range captures subtle details in audio recordings - Mute and de-emphasis controls provide flexibility in audio playback

Disadvantages: - Limited pin configuration may restrict certain applications - Requires external components for complete audio system integration

Working Principles

The PCM1748EG4 operates by receiving digital audio data through the DIN pin. The bit clock (BCK) and left/right clock (LRCK) signals synchronize the conversion process. The digital audio data is converted into analog signals using a high-resolution DAC. The resulting analog audio signals are then available at the VOUTL and VOUTR pins.

Detailed Application Field Plans

The PCM1748EG4 is suitable for various audio applications, including:

1. Professional audio equipment
2. Home theater systems
3. Digital audio players
4. Automotive audio systems
5. Musical instruments

Detailed and Complete Alternative Models

1. PCM1794A: Higher resolution (32-bit), lower THD+N (<0.001%), wider voltage range (0 to 4.2 Vrms)
2. PCM5102A: Lower cost, lower power consumption, smaller package size (16-pin TSSOP)
3. CS4398: Similar specifications, different manufacturer (Cirrus Logic)

Please note that the above alternative models are provided as examples and there are other alternatives available in the market.

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