高性能 4 通道数模转换器
The CS4304S is a 4-channel, 32-bit resolution audio DAC supporting sample rates of up to 768 kHz. The CS4304S’s proprietary filtering adapts to preserve clarity and tonal accuracy across sample rates of 44.1 kHz to 768 kHz, creating a consistent sound that stays balanced independent to the content users are playing. Compared to alternative solutions that rely on specialized low-noise supplies, the CS4304S achieves 118 dB dynamic range without added BOM cost and complexity. Operating at 13 mW/ch, the CS4304S is optimized for high audio performance without compromising power efficiency or cost.
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技术
特性
- 高性能 4 通道数模转换器 (DAC)
- 差分模拟输出
- 高分辨率 32 位数字架构
- 低延迟数字滤波器和数字音量控制
- PLL 支持各种外部系统时钟参考
- 跨多个设备同步操作
- 音频串行端口 (ASP) 采样率高达 768 kHz
- I2S、左对齐和 TDM 数据格式
- DSD 高达 512xfs
- 硬件和软件控制模式
- 无需主机处理器即可进行硬件控制
- 集成电路 (I2C) 控制端口频率响应高达 1 MHz
- SPI 控制端口频率响应高达 24 MHz
- 3.3 V 单电源供电
- 支持 1.8 V–3.3 V 数字输入/输出
参数规格
| 声道输出 | 4 |
| 分辨率（位） | 32 |
| 动态范围（dB） | 118 |
| 总谐波失真 (THD) + N (dB) | -110 |
| 采样频率（kHz） | 768 |
| 模拟电源 (V) | 3.3 |
| 数字电源 (V) | 3.3 |
| 逻辑电源 (V) | 1.8-3.3 |
| 输出电平 (Vrms) | 2 |
| 封装 | 48 引脚 QFN |
技术文档
CDB-PROAUDIO User Guide
May 1, 2026, DS1352R4 : 4.0 MBCS430xx Output Buffer/Filter Circuits
Aug 1, 2025, AN0679R1 : 297.7 KBDC4304P/4S/8P/8S Schematic and Layout
Aug 1, 2025 : 10.7 MbCS4304S Product Data Sheet
Jul 1, 2025, DS1388F1 : 4.4 MbCDB-DC4304P/4S/8P/8S-DAC User Guide
Jul 1, 2025, DS1393DB5 : 3.3 Mb
选型指南
在以下情况下，应选用 CS4304S：
- Synchronizing multiple audio output channels is required.
- 用于设计音频产品的工程资源有限。
- Low latency (4.5/fs) is required across multiple channels.
- You would like to achieve multiple distinct audio signatures from a single DAC, utilizing selectable digital filters without hardware changes.
在以下情况下，不应选用 CS4304S：
- An integrated headphone or lineout driver is required. In this case the CS43131 should be considered.
- An SPI interface is required for the input audio data.
- A single op-amp stage is required for cost/size reasons. In this case the CS4332S should be considered.
- 若需设计外形尺寸小的电池供电产品（如 TWS 耳机、手机），则应考虑选用 CS43131。
- Greater than 120 dB of dynamic range is required. In this case the CS4304P should be considered.
The primary application for the CS4304S is Digital Mixing Console. The CS4304S is placed directly after a FPGA/DSP or MCU converting digital audio, via the audio serial port (ASP), to analog audio. This analog audio feeds into conditioning circuitry to drive Line/Headphone and speaker outputs.
其他相关应用包括：Digital mixers, USB audio interfaces, musical instruments, audio DACs, networked amplifiers, audio IO peripherals, effects processors, home audio receivers and home video receivers, effects processors, professional loudspeakers, high performance home speakers, portable MP3 players, wired and wireless headsets.
