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Cirrus Logic has introduced the CS8422, a 24-bit, 192kHz digital audio receiver with a low-jitter PLL and an integrated asynchronous sample-rate converter. The IC gives designers of consumer and professional audio applications a solution for receiving a variety of incoming digital audio sources, such as from set-top boxes, Blu-ray disc players and game consoles. The receiver utilises a high-performance PLL that does not require any external loop-filter components, for low-jitter clock recovery and high-jitter rejection from incoming audio streams. The IC integrates an input multiplexer that supports up to four S/PDIF or two differential AES3 audio inputs; receiver-to-transmitter pass-through; and a TDM mode for automotive applications. Digital audio can be routed from the receiver output or a standard serial audio port into the stereo asynchronous sample-rate converter. The sample-rate converter removes the requirement for designs to vary system clocking to support digital audio sources of different sample rates. Supporting input/output rations from 6:1 and 1:6, the IC provides transparent conversion with 140dB dynamic range and -120dB THD+N performance. The CS8422 is offered in a 32-lead QFN package and operates from a single, 3.3V supply with on-chip level shifters to support a direct interface to logic levels from 1.8 to 5V. Audio data is input through the digital-interface receiver or a three-wire serial audio-input port, with audio output through one of two three-wire serial output ports.