AK4372ECB 参数 Datasheet PDF下载

[AK4372]

AK4372

DAC with built-in PLL & HP-AMP

GENERAL DESCRIPTION

The AK4372 is a 24-bit DAC with an integrated PLL and headphone amplifier. The PLL input frequency is

synchronized to typical mobile phone clock frequencies. The AK4372 features an analog mixing circuit

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

headphone amplifier features “pop-noise free” power-on/off, a mute control, and it delivers 40mW of

power into 16Ω. The AK4372 is packaged in a 24-pin CSP (2.5mm×2.5mm) package, ideal for portable

applications.

FEATURE

Multi-bit

ΔΣ

DAC

Sampling Rate

- 8kHz ~ 48kHz

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

- PLL Mode (MCKI): 27MHz, 26MHz, 19.8MHz, 19.68MHz, 19.2MHz, 15.36MHz,

14.4MHz, 13MHz, 12MHz and 11.2896MHz

- PLL Mode (BICK or LRCK): 64fs, 32fs or fs

- EXT Mode: 256fs/384fs/512fs/768fs/1024fs

- Input Level: AC Couple Input Available

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

- I

2

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

- Master/Slave Mode

Digital Mixing: LR, LL, RR, (L+R)/2

Bass Boost Function

Digital ATT

Analog Mixing Circuit: 3 Inputs (Single-ended or Full-differential)

Stereo Lineout

- S/N: 90dB@3.3V

- Output Volume: +6 to –24dB (or 0 to –30dB), 2dB step

Headphone Amplifier

- Output Power: 40mW x 2ch @16Ω, 3.3V

- S/N: 92dB@3.3V

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

- Output Volume: 0 ~ –63dB & +12/+6/0 dB Gain

1.5dB step (0 ~ –30dB), 3dB step (–30 ~ –63dB)

μ

P Interface: 3-wire/I

2

C

Power Supply: 1.6V

∼

3.6V

Power Supply Current: 3.8mA @1.8V (6.8mW, DAC+HP, No output)

AK4372ECB: Ta=

−

30

∼

85°C

AK4372VCB: Ta=

−

40

∼

85°C

Small Package: 24pin CSP (2.5mm x 2.5mm, 0.4mm pitch)

Register Compatible with AK4368

MS0684-E-02

-1-

2008/12