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The CS5396 and CS5397 are complete stereo A/D converters for digital audio systems. They perform sampling, analog-to-digital conversion and anti-alias filtering, generating 24-bit values for both left and right inputs in serial form at sample rates up to 100 kHz per channel. The CS5396/97 use a patented 7th-order, tri-level, Delta-Sigma modulator followed by digital filtering and decimation, which removes the need for an external anti-alias filter. The A/D converters use a differential architecture which provides excellent noise rejection. The CS5396 has a linear phase filter optimized for audio applications with ±0.005 dB passband ripple and >117 dB stopband rejection. The CS5397 has a non-aliasing filter response with ±0.005 passband ripple and >117 dB stopband attenuation. Other features available in both the CS5396 and CS5397 are an optional low group, delay filter and a unique psychoacoustic, noise shaping filter which subjectively truncates the output to 16, 18, or 20 bits while 24-bit sound quality is preserved. The CS5396/97 are targeted for high-performance professional audio systems requiring wide dynamic range, negligible distortion, and low noise.
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