PCM1742EG4

Product Overview

• Category: Digital-to-Analog Converter (DAC)
• Use: Converts digital audio signals into analog audio signals
• Characteristics:
  • High-resolution audio conversion
  • Low distortion and noise levels
  • Wide dynamic range
  • Supports various audio formats
• Package: SSOP-20
• Essence: Provides high-quality audio conversion for various applications
• Packaging/Quantity: Available in reels of 2500 units

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): >110 dB
• Dynamic Range (DR): >110 dB
• Power Supply Voltage: 3.3 V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PCM1742EG4 has a total of 20 pins, which are configured as follows:

1. VCOM: Common voltage reference
2. AVDD: Analog power supply
3. DVDD: Digital power supply
4. AGND: Analog ground
5. DGND: Digital ground
6. IOUTL: Left channel analog output
7. IOUTR: Right channel analog output
8. FILT: External filter connection
9. BICK: Bit clock input
10. LRCK: Word clock input
11. SDIN: Serial data input
12. MUTE: Mute control input
13. DEEMPH: De-emphasis control input
14. VREF: Reference voltage output
15. VOUTL: Left channel analog output voltage
16. VOUTR: Right channel analog output voltage
17. FS: Frame synchronization input
18. SCLK: Serial clock input
19. RESET: Reset control input
20. NC: No connection

Functional Features

• High-resolution audio conversion for accurate reproduction of digital audio signals
• Low distortion and noise levels ensure high-fidelity sound reproduction
• Wide dynamic range captures subtle details in the audio signal
• Supports various audio formats, including PCM and DSD
• Built-in digital filters for enhanced audio performance
• Mute and de-emphasis control for added flexibility

Advantages and Disadvantages

Advantages

• High-resolution audio conversion for superior sound quality
• Low distortion and noise levels result in clean and accurate audio reproduction
• Wide dynamic range captures the full range of audio signals
• Supports various audio formats, providing compatibility with different systems
• Compact SSOP-20 package allows for space-efficient designs

Disadvantages

• Limited pin configuration may restrict certain applications
• Requires external filters for optimal performance in some cases
• Higher cost compared to lower-end DACs

Working Principles

The PCM1742EG4 utilizes a delta-sigma modulation technique to convert digital audio signals into analog form. It employs oversampling and noise shaping to achieve high-resolution audio conversion. The digital audio data is received through the serial input interface and processed by internal digital filters. The converted analog audio signals are then output through the left and right channel analog outputs.

Detailed Application Field Plans

The PCM1742EG4 is suitable for a wide range of applications, including:

1. Professional audio equipment
2. Consumer audio devices
3. Automotive audio systems
4. Home theater systems
5. Musical instruments
6. Digital audio workstations
7. Audio mixing consoles
8. Sound reinforcement systems

Detailed and Complete Alternative Models

Some alternative models to the PCM1742EG4 include:

1. PCM1794A: Higher-resolution DAC with 32-bit resolution and higher sampling rates
2. PCM5102A: Lower-cost DAC with 16-bit resolution and lower dynamic range
3. AK4490EQ: High-end DAC with exceptional performance and advanced features
4. CS4398: Mid-range DAC with balanced audio outputs and low distortion levels

These alternative models offer different specifications and features to cater to various application requirements.

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