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AK4367VN

Low Power 24-Bit 2ch DAC with HP-AMP & Output Mixer

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4367]

AK4367

Low Power 24-Bit 2ch DAC with HP-AMP & Output Mixer

GENERAL DESCRIPTION

The AK4367 is 24bit DAC with built-in Headphone Amplifier. The AK4367 features an analog mixing

circuit that allows easy interfacing in mobile phone and portable communication designs. The integrated

headphone amplifier features “pop-free” power-on/off, a mute control and delivers 50mW of power at

16Ω. The AK4367 is housed in a 20pin QFN package, making it suitable for portable applications.

FEATURE

† Multi-bit ∆Σ DAC

† Sampling Rate: 8kHz∼48kHz

† 64x Oversampling

† On chip perfect filtering 8 times FIR interpolator

- Passband: 20kHz

- Passband Ripple: ±0.02dB

- Stopband Attenuation: 54dB

† Digital De-emphasis Filter: 32kHz, 44.1kHz and 48kHz

† System Clock: 256fs/384fs/512fs

- AC Couple Input Available

† Audio I/F Format: MSB First, 2’s Compliment

- I2S, 24bit MSB justified, 24bit/20bit/16bit LSB justified

† Digital ATT

† Analog Mixing Circuit

† Mono Lineout

† µP Interface: 3-wire/I2C

† Bass Boost Function

† Headphone Amplifier

- Output Power: 50mW x 2ch @16Ω, 3.3V

- S/N: 92dB@2.4V

- Pop Noise Free at Power-ON/OFF and Mute

† Power Supply: 2.2V ∼ 3.6V

† Power Supply Current: 2.8mA@2.4V (@HP-AMP no-output)

† Ta: −40 ∼ 85°C

† Small Package: 20pin QFN

MS0247-E-02

-1-

2005/10

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