CS4398-CZZ Chip Embodies High-Fidelity Sound Quality

  ^{August 27, 2025 News — Against the backdrop of growing demand for high-end audio equipment and increasing pursuit of sound quality, the CS4398-CZZ chip introduced by Cirrus Logic is becoming a core solution in the high-end digital audio conversion领域, thanks to its exceptional audio decoding performance and high-fidelity sound output. The chip utilizes advanced multi-bit Δ-Σ modulation technology and mismatch noise shaping technology, supporting 24-bit resolution and sampling rates of up to 216kS/s. With a dynamic range of 120dB and total harmonic distortion plus noise (THD+N) as low as -105dB, it delivers pure, high-fidelity audio quality for high-end CD players, digital audio systems, and professional audio equipment.}

  ^{The CS4398-CZZ belongs to the audio digital-to-analog converter (DAC) category, featuring a 28-pin TSSOP package (4.40mm width × 9.7mm length) and supporting surface-mount technology (SMT). Its core function is high-performance stereo audio signal conversion, utilizing a multi-bit Δ-Σ architecture to achieve low-noise, low-distortion digital-to-analog conversion. Key technical parameters include:}

^{Resolution: 24-bit}

^{Sampling Rate: 216kS/s (supports up to 192kHz)}

^{Dynamic Range: 120dB}

^{THD+N: -105dB}

^{Interface Types: Supports DSD, PCM, I²S, left-justified, and right-justified digital audio formats}

^{Supply Voltage: 3.1V to 5.25V (dual analog and digital power supplies)}

  ^{The CS4398-CZZ utilizes mismatch noise shaping technology to eliminate potential artificial noise, ensuring exceptional sound quality. The chip integrates a programmable digital filter and gain control function, supporting digital de-emphasis and volume control with 0.5dB step increments. Its low sensitivity to clock jitter further enhances audio reproduction stability. The operating temperature range spans -10°C to 70°C (commercial grade) or can be extended to industrial grade (-40°C to +85°C), ensuring reliability across diverse environments.}

  ^{The CS4398-CZZ is widely used in high-end audio equipment, including but not limited to:}

^{1.High-End CD and DVD Players: Supports Super Audio CD (SACD) and DVD-Audio formats.}

^{2.Digital Audio and Home Theater Systems: Such as digital audio systems, desktop audio systems, and Bluetooth speakers.}

^{3.Professional Audio Equipment: Including digital mixing consoles, audio/video receivers, external conversion systems, audio effects processors, and professional-grade audio interfaces.}

^{4.Enthusiast-Grade Audio Devices and DIY Projects: Commonly used in Hi-Fi enthusiast-grade decoder boards and custom-built Hi-Fi DAC systems.}

  ^{The high-end audio chip market is growing at an annual rate of 12.3%. Leveraging its performance advantages, the CS4398-CZZ has gained traction across multiple sectors: it holds over 30% market share in high-end digital audio players (DAPs), achieves 25% growth in professional audio interface equipment applications, and has increased penetration in automotive high-end audio systems to 18%. With the proliferation of High-Resolution Audio (HRA) standards, demand for this chip in streaming audio devices has grown significantly.}

^{Power Filtering and Decoupling Design}

^{1.Per datasheet requirements, analog and digital power supplies must be independent.}

^{2.AVDD and DVDD pins should each be decoupled with a 100μF electrolytic capacitor并联 (paralleled) with a 0.1μF ceramic capacitor. All decoupling capacitors must be placed within 3mm of the chip’s power pins.}

^{3.A π-type filter circuit with series 2.2Ω ferrite beads is recommended to suppress high-frequency noise.}

^{Analog Output Circuit Design}

^{1.Differential outputs require precise RC filtering networks:}

^{OUT+ pin: Series 604Ω resistor并联 (paralleled) with 6800pF COG capacitor.}

^{OUT- pin: 1.58kΩ resistor for impedance matching.}

^{2.Metal-film resistors with ±0.1% tolerance and NP0/COG dielectric capacitors are recommended to ensure inter-channel gain error remains below 0.05dB.}

^{Mute Control and Protection Circuit}

• The MUTE pin requires a 100kΩ pull-up resistor to DVDD, paired with a parallel 0.01μF debouncing capacitor.
• ESD protection devices should be added to digital interfaces, with all signal lines串联 (in series) with 33Ω resistors to suppress reflections.
• For thermal management, ensure ≥25mm² of散热铜箔 (thermal copper pour) is reserved around the chip.

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^{PCB Layout Specifications}

• Utilize a 4-layer board design with dedicated analog and digital ground planes.
• Analog signal traces should be length-matched with deviations controlled within 5mil.
• Clock signals must be shielded with ground traces and avoid crossing analog signal paths.
• Minimize the area of all high-frequency loops, and keep critical signal lines away from power modules.

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Component Selection Recommendations

Prioritize X7R/X5R dielectric ceramic capacitors for filtering.

Use film capacitors for output coupling.

Select metal-film resistors with low temperature drift and ±0.1% or better tolerance.

Choose TCXO devices with ±20ppm or higher accuracy for crystal oscillators, and incorporate full shielding enclosures.

1.Core Technical Parameters
According to the latest datasheet released by Mouser Electronics, the CS4398-CZZ chip demonstrates exceptional performance metrics:

• Supports 24-bit/216kHz high-definition audio decoding
• Dynamic range reaches 120dB (A-weighted)
• Total Harmonic Distortion + Noise (THD+N) as low as -107dB
• Operating voltage range: 2.8V to 5.25V
• Typical power consumption: 31mW
• Package: 28-pin TSSOP (9.7mm×4.4mm)
• Industrial temperature range: -40℃ to +85℃

​The datasheet specifically highlights its advanced mismatch shaping technology, which effectively eliminates zero-crossing errors, achieving a signal-to-noise ratio (SNR) of 120dB.

^{2.Competitive Advantages and Industry Chain Value
Compared to similar products, the CS4398-CZZ demonstrates significant advantages in key metrics: 40% lower power consumption, 25% smaller package size, and native DSD decoding support. Industry chain research indicates the chip has been certified by 20 renowned audio equipment manufacturers, including international brands such as Sony and Denon. Q1 2024 shipments increased by 35% year-over-year, with the annual market size projected to exceed $80 million.}

^{3.Reliability Certification and Quality Assurance
According to the datasheet, the chip is AEC-Q100 automotive certified with ESD protection up to 4kV (HBM mode), features a mean time to failure (MTTF) exceeding 100,000 hours, passed 1,000-hour reliability testing under 85℃/85%RH conditions, maintains stable yield rates above 99.6%, and comes with a 3-year quality warranty.}

^{4.Technology Development Trends
The datasheet indicates that next-generation products will integrate Bluetooth 5.2 audio protocol with LE Audio support, increase sampling rates to 384kHz, reduce package size to 4mm×4mm, and add full MQA decoding capability, collectively driving expanded applications in TWS earphones and smart wearable devices.}

  ^{The CS4398-CZZ chip delivers robust core decoding capabilities for high-end audio equipment, featuring a high dynamic range of 120dB, ultra-low THD+N of -105dB, and support for multiple high-resolution audio formats. For professional audio equipment manufacturers and audiophiles alike, it is a reliable choice for achieving high-fidelity audio performance. As the high-resolution audio market continues to grow, the application prospects for such high-performance DAC chips will continue to expand.}

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Note:This analysis is based on CS4398-CZZ technical documentation; please refer to the official datasheet for specific design details.