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AK4390

Ultra Low Latency 32-Bit ΔΣ DAC

Asahi Kasei Microdevices 

[AK4390]

AK4390

Ultra Low Latency 32-Bit ΔΣ DAC

GENERAL DESCRIPTION

The AK4390 is a high performance stereo DAC capable of sampling up to 216kHz including a 32-bit digital

filter. The modulator uses AKM's multi-bit architecture, delivering wide dynamic range while preserving

linearity for improved THD+N performance. The AK4390 has fully differential switched-cap filter outputs,

removing the need for AC coupling capacitors and increasing performance for systems with excessive

clock jitter. The AK4390 accepts 192kHz PCM data, ideal for a wide range of applications including

DVD-Audio, high end sound cards, digital audio Firewire and USB interface boxes, and digital mixers.

FEATURES

• 128-times Oversampling

• Sampling Rate: 30kHz ∼ 216kHz

• 32Bit 8x Digital Filter

Ripple: ±0.005dB, Attenuation: 100dB

Low latency option: 7/fs

• High Tolerance to Clock Jitter

• Low Distortion Differential Output

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

• Soft Mute

• Digital Attenuator (255 levels and 0.5dB step)

• THD+N: −103dB

• DR, S/N: 120dB

• Audio Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I2S

• Master Clock:

30kHz ~ 32kHz: 1152fs

30kHz ~ 54kHz: 512fs or 768fs

30kHz ~ 108kHz: 256fs or 384fs

108kHz ~ 216kHz: 128fs or 192fs

• Power Supply: 5V ± 5%

• TTL Level Digital I/F

• Package: 30pin VSOP

MS1046-E-00

-1-

2009/01

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