AKD4367 参数 Datasheet PDF下载

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

- I

2

S, 24bit MSB justified, 24bit/20bit/16bit LSB justified

Digital ATT

Analog Mixing Circuit

Mono Lineout

µP Interface: 3-wire/I

2

C

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