CS445A

Product Overview

Category: Integrated Circuit (IC)

Use: The CS445A is a high-performance audio digital-to-analog converter (DAC) designed for use in various audio applications. It is commonly used in audio equipment such as CD players, DVD players, and home theater systems.

Characteristics: - High-resolution audio conversion - Low distortion and noise levels - Wide dynamic range - Support for multiple audio formats - Compact size

Package: The CS445A is available in a small outline integrated circuit (SOIC) package, which provides ease of integration into electronic devices.

Essence: The essence of the CS445A lies in its ability to convert digital audio signals into analog signals with high precision and fidelity, ensuring accurate reproduction of sound.

Packaging/Quantity: The CS445A is typically sold in reels containing a specified quantity of ICs, usually 1000 units per reel.

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
• Output Voltage Range: 0 to 2.5 Vrms
• Power Supply Voltage: 3.3 V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CS445A features a 16-pin configuration with the following pin assignments:

1. VDD - Power supply voltage input
2. GND - Ground reference
3. SDATA - Serial data input
4. SCLK - Serial clock input
5. LRCLK - Left/right channel clock input
6. MCLK - Master clock input
7. BCK - Bit clock input
8. DVDD - Digital power supply voltage input
9. AGND - Analog ground reference
10. VOUTL - Left channel analog output
11. VOUTR - Right channel analog output
12. AVDD - Analog power supply voltage input
13. MUTE - Mute control input
14. DEEMPH - De-emphasis control input
15. TEST - Test mode control input
16. NC - No connection

Functional Features

• High-quality audio conversion with low distortion and noise levels
• Support for various audio formats, including PCM, DSD, and DoP
• On-chip digital filters for enhanced audio performance
• Built-in oversampling and interpolation algorithms
• Programmable volume control
• Integrated mute and de-emphasis functions
• Flexible clocking options for compatibility with different systems

Advantages and Disadvantages

Advantages: - High-resolution audio conversion for accurate sound reproduction - Low distortion and noise levels ensure excellent audio quality - Wide dynamic range captures subtle details in the audio signal - Compact size allows for easy integration into electronic devices - Support for multiple audio formats enhances versatility

Disadvantages: - Requires external components for complete audio system implementation - Limited output voltage range may require additional amplification for certain applications

Working Principles

The CS445A operates by receiving digital audio data through its serial data (SDATA) and clock inputs. It then processes the data using internal digital filters and oversampling techniques to enhance the audio quality. The converted analog audio signals are then output through the left and right channel analog outputs (VOUTL and VOUTR).

Detailed Application Field Plans

The CS445A is widely used in various audio equipment and systems, including: - CD players - DVD players - Home theater systems - Audio receivers - Soundbars - Portable audio devices

Its high-performance audio conversion capabilities make it suitable for both consumer and professional audio applications.

Detailed and Complete Alternative Models

• CS4398: Similar high-performance audio DAC with 24-bit resolution and support for multiple audio formats.
• PCM1794A: High-end audio DAC with advanced digital filtering and dynamic range control.
• AK4490EQ: Premium audio DAC with low distortion and high signal-to-noise ratio.
• ES9028PRO: Professional-grade audio DAC with exceptional audio performance and extensive feature set.

These alternative models offer similar functionality and can be considered as alternatives to the CS445A based on specific application requirements.

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