AK4367 Datasheet, PDF (1/38 Pages) Asahi Kasei Microsystems – OUTPUT MIXER & HP - AMP 24 BIT 2 CH DAC

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 AK4365 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-01
-1-
2004/11