CS4344 Digital-to-Analog Conversion Technology

^{September 12, 2025, Shenzhen, China — With increasing demands for audio quality in consumer electronics, smart home devices, and professional audio equipment, the need for high-performance digital-to-analog converters (DACs) continues to grow. Shenzhen Anxinruo Technology Co., Ltd. announced today that its distributed CS4344-CZZR high-performance stereo 192kHz/24-bit DAC chip is now fully available on the market. With exceptional audio performance, minimal external circuit design, and outstanding cost-effectiveness, this chip provides audio equipment manufacturers with a new choice.}

^{The CS4344-CZZR utilizes advanced multi-bit Δ-Σ modulation technology to achieve 24-bit audio signal conversion, delivering a high signal-to-noise ratio of 107dB and ultra-low distortion of -90dB. The chip supports a wide sampling rate range from 8kHz to 192kHz, is compatible with standard I²S, left-justified, and right-justified digital audio interface formats, and features a built-in interpolation filter. With a single 3.3V to 5V power supply design and low power consumption of 25mW, combined with digital de-emphasis and soft mute functions, it significantly simplifies external circuit design while ensuring exceptional audio quality.}

^{Key Performance Parameters}

^{This connection diagram illustrates the typical application configuration of the CS4344-CZZR, suitable for most audio application scenarios. In practical applications, external component parameters can be adjusted based on specific requirements.}

Pin Connection Description

^{1.Digital Audio Input}

^{SDIN: Serial audio data input}

^{SCLK: Serial clock input}

^{LRCK: Left/right channel clock}

^{MCLK: Master clock input (optional)}

^{2.Power Management}

^{VD: Digital power supply (3.3V)}

^{VA: Analog power supply (3.3-5V)}

^{Each power pin requires a 1μF decoupling capacitor placed nearby}

^{3.Analog Output}

^{AOUTL: Left channel analog output}

^{AOUTR: Right channel analog output}

^{FILT+: Filter network connection point}

^4.Grounding

^{DGND: Digital ground}

^{AGND: Analog ground}

^{Recommended to connect at a single point near the chip}

^{Design Key Points}

^{Digital and analog power supplies should be powered separately}

^{All power pins require decoupling capacitors placed nearby}

^{Analog and digital grounds should be connected at a single point near the chip}

^{Audio output lines should be kept away from digital signal lines}

^{Shielded cables are recommended for analog output connections}

^{The CS4344-CZZR adopts a highly integrated digital-to-analog conversion architecture, with its main functional modules as follows:}

^{Digital Signal Processing Channel}

^{1.PCM Serial Interface}

^{Receives standard digital audio data streams (I²S, left-justified, right-justified formats)}

^{Automatically recognizes input data formats and sampling rates}

^{2.Digital Interpolation Filter}

^{Employs multi-stage interpolation filtering technology}

^{Increases the input sampling rate to oversampling frequencies}

^{Effectively improves signal-to-noise ratio and dynamic range}

^{3.Power Management}

^{Supports single power supply of 3.3V or 5V}

^{Separate analog and digital power supply design}

^{Low-power management mode}

^{4.Analog Output Buffer}

^{Independent left/right channel outputs}

^{Low output impedance design (typical value 100Ω)}

^{Directly drives subsequent amplification circuits}

^{5.Core Technical Features:}

^{Sampling Rate: 8kHz to 192kHz}

^{Resolution: 24-bit no missing codes}

^{Dynamic Range: 107dB (A-weighted)}

^{THD+N: -90dB}

^{Power Supply: 3.3V/5V single supply}

^{This architecture, through highly integrated design, maintains excellent audio performance while significantly reducing external component requirements, providing a complete digital-to-analog conversion solution for various audio applications.}

^{Key Feature Description}
 

^{1.Power Management}

^{Adopts separate power supply design (VD digital power/VA analog power)}

^{Each power pin requires a 1μF ceramic decoupling capacitor}

^{Digital and analog grounds should be connected at a single point near the chip}

^{2.Digital Interface}

^{Supports standard audio serial interface protocols}

^{All digital input pins are compatible with 3.3V CMOS levels}

^{Automatically recognizes input signal formats}

^{3.Analog Output}

^{Output Voltage Range: 0-2.0Vrms}

^{Output Impedance: 100Ω typical}

^{Can directly drive subsequent amplification circuits}

^{Digital Audio Interface Pins (Left Side)                                                                     Analog Audio Interface Pins (Right Side)}

^{Application Notes}

^{Analog and digital power supplies should use independent LDOs for power delivery}

^{Audio output traces should be kept away from digital signal lines}

^{The FILT+ pin can be connected to an external RC network to enhance filtering}

^{All unused pins should be left floating}

^{This pin configuration adopts a compact 10-pin design, providing complete audio DAC functionality while significantly reducing peripheral circuit complexity. It is particularly suitable for space-constrained portable audio devices.}

^{Key Sequence Points Analysis:}

^{1.Power-Up & Initial State}

^{After power is applied, the digital supply voltage (VD) begins to ramp up.}

^{The analog outputs undergo a gradual voltage ramp-down process as a protective measure to prevent speaker pop noise.}

^{The device eventually enters a stable power-down state where both VD and all analog outputs are at low levels, resulting in extremely low power consumption.}

^{2.Initialization & Normal Operation}

^{The application of a master clock (MCLK) by the user is a key step to wake the device from the power-down state.}

^{Once a valid MCLK is detected, the device immediately enters normal operation and begins generating analog audio output.}

^{The availability of the de-emphasis function depends on the SCLK mode:}

^{Internal SCLK Mode (Default): SCLK is generated internally (= MCLK/64), and de-emphasis is available.}

^{External SCLK Mode: SCLK is provided externally by the user, and de-emphasis is unavailable.}

^{3.Power-Down Sequence}

^{When the user removes the MCLK signal, the device initiates the power-down sequence.}

^{The output voltage gradually ramps down again to avoid generating shutdown noise.}

^{Finally, the device safely returns to the power-down state, awaiting the next wake-up signal.}

^{4.Other Operational Scenarios}

^{Changing MCLK/LRCK Ratio: If the clock ratio is modified during operation, the device will automatically resynchronize and maintain stable output.}

^{Removing LRCK: If LRCK is removed during operation, the device enters a standby mode where the output remains at its last valid level until LRCK is restored.}

^{For procurement or further product information, please contact:86-0775-13434437778,}

^{​Or visit the official website:https://mao.ecer.com/test/icsmodules.com/,Visit the ECER product page for details: [链接]}