AK4646EZ 参数 Datasheet PDF下载

[AK4646]

AK4646

Stereo CODEC with MIC/SPK-AMP

GENERAL DESCRIPTION

The AK4646 features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input

circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit, and Output circuits

include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback

function. The AK4646 is available in a small 32pin QFN (5mmx5mm: AK4646EN, 4mmx4mm:

AK4646EZ), utilizing less board space than competitive offerings.

FEATURES

1. Recording Function

•

Stereo Mic Input (Full-differential or Single-ended)

•

Stereo Line Input

•

MIC Amplifier (+32dB/+29dB/+26dB/+23dB/+20dB/+17dB/+10dB/0dB)

•

Digital ALC (Automatic Level Control)

(+36dB

∼ −54dB,

0.375dB Step, Mute)

•

ADC Performance: S/(N+D): 83dB, DR, S/N: 86dB (MIC-Amp=+20dB)

S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB)

•

Wind-noise Reduction Filter

•

5 Band Notch Filter

•

Stereo Separation Emphasis

2. Playback Function

•

Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz)

•

Digital ALC (Automatic Level Control)

(+36dB

∼ −54dB,

0.375dB Step, Mute)

•

Stereo Separation Emphasis

•

Stereo Line Output

- Performance: S/(N+D): 88dB, S/N: 92dB

•

Mono Speaker-Amp

- S/(N+D): 60dB@150mW, S/N: 90dB

- BTL Output

- Available for both Dynamic and Piezo Speaker

- Output Power: 400mW@8Ω (SVDD=3.3V)

•

Analog Mixing: Mono Input

3. Power Management

4. Master Clock:

(1) PLL Mode

•

Frequencies:

12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)

1fs (LRCK pin)

32fs or 64fs (BICK pin)

(2) External Clock Mode

•

Frequencies: 256fs, 512fs or 1024fs (MCKI pin)

5. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs

MS0557-E-05

-1-

2011/01