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AK4584VQ

24Bit 96kHz Audio CODEC with DIT/DIR

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4584]

AK4584

24Bit 96kHz Audio CODEC with DIT/DIR

GENERAL DESCRIPTION

AK4584 is a high-performance 24-bit CODEC for 96kHz consumer audio and digital recording

applications. The on-board analog-to-digital converter has an impressive dynamic range, thanks in part

to AKM’s Enhanced Dual-Bit architecture. The DAC features the newly developed Advanced Multi-Bit

architecture and achieves low out-of-band noise and high jitter tolerance through the use of Switched

Capacitor Filter (SCF) technology. The AK4584 also has a S/PDIF-AES/EBU digital audio transmitter

(DIT) and a digital audio receiver (DIR) that are compatible with 24-bit, 192kHz formats. The AK4584 can

automatically detect NON-PCM bit streams like AC-3, MPEG and DTS. Either the ADC or the digital

audio input can be routed directly to the digital audio output. The AK4584 has an input Programmable

Gain Amplifier and is well suited for computer DAWs, MiniDisc, DVD-R, hard disk and CD-R

recording/playback systems.

*AC-3 is a trademark of Dolby Laboratories. DTS is a trademark of Digital Theater Systems, Inc.

FEATURES

1. 24bit 2ch ADC

• fs: max 96kHz

• Single-end Input

• S/(N+D): 90dB

• Dynamic Range, S/N: 100dB

• Digital HPF for offset cancellation

• Input PGA with +18dB gain & 0.5dB step

• Input DATT with –72dB ATT

• I/F format: MSB justified or I2S

2. 24bit 2ch DAC

• fs: max 192kHz

• 24bit 8 times Digital Filter

- Ripple: ±0.005dB, Attenuation: 75dB

• Single-end Output

• S/(N+D): 94dB

• Dynamic Range, S/N: 104dB

• De-emphasis for 32kHz, 44.1kHz, 48kHz sampling

• Digital Attenuator with soft-transition

• Soft Mute

• Zero Detect Function

• I/F format: MSB justified, LSB justified or I2S

3. 3 Outputs 24 bit 192kHz DIT

• 3-Channel Transmission Outputs (2 Through outputs & DIT Output)

• 40 bits Channel Status Buffer

MS0118-E-00

-1-

2001/11

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