Japan - Asahi Kasei Microsystems (AKM), a leading supplier of audio ICs for professional and consumer markets, recently introduced the AK4113 - a 192 kHz digital audio interface receiver (DIR) with a wide sampling rate. The six-channel input AK4113 supersedes the four-channel AK4112B, which has been widely used in AV amplifiers as a cost-saving version of the AK4114 without transmission functions. It supports wide sampling rates from 8kHz to 216kHz.The AK4113 is fully compatible with AES3, IEC60958, S/PDIF and EIAJ-CP1201 standards for AV amplifiers, DVD receivers and DTVs. It also supports 24-bit 192 kHz PCM data and Non-PCM data streaming like Dolby Digital/MPEG etc.

Like the AK4114, it features a Q-subcode buffer for audio CD, built-in 40-bit channel status buffer and incorporates a non-PCM detection function for identifying DTS-CD data. Compared with the AK4112B, the AK4113 increases the number of sampling rates that can be detected from seven to ten and the microcontroller interface supports 400 kHz I2S as well as the four-wire type.

The AK4113 package has the same dimensions as the AK4112B and is pin-compatible. Registers have been increased to conform to the AK4114, giving the AK4113 wide system versatility. Because it meets both consumer and professional standards, the AK4113 has plenty of functions for interfacing with studio equipment.

The AK4113 comes in a 30-pin VSOP package. Evaluation boards and samples are available now.

(Sarah Rushton-Read)


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