PCM1802 24Bit Stereo Audio ADC Module with Fidelity Capture and LowNoise Delta Sigma Converter Board

PCM1802 24Bit, 96kHz Stereo A/D Converter Module Overview The PCM1802 module is a singlechip, singleended stereo analogtodigital converter that delivers resolution 24bit conversion up to 96 kHz. It integrates a deltasigma modulator, antialiasing filter, oversampling decimation filter, and an onchip pass filter to remove DC components, enabling clean, reliable digital audio capture for consumer and prosumer applications. Key benefits Accurate 24bit conversion at sampling rates up to 96 kHz for fidelity audio capture. Integrated antialiasing and decimation filters reduce external component count and simplify system design. Low distortion and dynamic range improve audio clarity and headroom in recording and playback chains. Flexible serial interface and clocking options make the module compatible with a wide range of digital audio processors and microcontrollers. Dual supply operation with 5 V analog and 3.3 V digital rails supports common system power architectures. Main features and performance Architecture: 24bit deltasigma stereo A/D converter with singleended analog input. Input level: singleended voltage input, 3 V peaktopeak. Sampling range: 16 kHz to 96 kHz. Oversampling: 64 times or 128 times oversampling modes. System clock ratios: 256 fS, 384 fS, 512 fS, 768 fS. Filters: builtin antialiasing filter and oversampling decimation filter. Onchip pass filter: 0.84 Hz at 44.1 kHz sampling. Passband ripple: plus or minus 0.05 dB. Stopband attenuation: 65 dB. Typical performance: SNR 105 dB; dynamic range 105 dB; THD plus noise 96 dB (typical). Serial audio interface: selectable master or slave mode and support for multiple data formats including 24bit leftjustified, I2S, and 20 or 24bit rightjustified. Power: dual supplies, 5 V analog and 3.3 V digital. Package: DB 20pin SSOP. Compatibility and integration Designed for straightforward integration with digital signal processors, audio codecs, microcontrollers, and dedicated audio receivers. Supports common serial audio formats for direct connection to I2Scompatible equipment and audio processing ICs. Dual supply logic and standard 20pin package simplify board layout and power sequencing in multiboard systems. Practical application scenarios 1) AV receiver or home audio system input stage: convert analog linelevel sources to 24bit stereo digital for further DSP processing, recording, or digital distribution. 2) CD recorder or MD player front end: capture analog playback or instrument signals with low distortion and dynamic range for accurate digitization. 3) Electronic musical instrument or multitrack recorder: provide resolution stereo conversion for keyboards, mixers, and multitrack systems where low noise and consistent timing are required. What is included 1 x PCM1802 module (DB 20pin SSOP based stereo ADC module) Why choose this module The PCM1802 module combines resolution conversion, integrated filtering, and flexible digital interfacing in a compact 20pin package, reducing external component needs and simplifying design. Its wide sampling range and selectable clock and data formats make it suitable for audio capture tasks across consumer and prosumer equipment without adding unnecessary complexity. Note Follow recommended power sequencing and grounding practices for performance. Ensure the system clock and selected data format match the host processor or audio interface for reliable operation.