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