AK4635 参数 Datasheet PDF下载

[AK4635]

= Preliminary =

AK4635

16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP

GENERAL DESCRIPTION

The AK4635 is a 16-bit mono CODEC with Microphone-Amplifier, Speaker-Amplifier and Video-

Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit.

Output circuits include a Speaker-Amplifier and Mono Line Output. Video circuits include a LPF and

Video-Amplifier. The AK4635 suits a moving picture of Digital Still Camera and etc. This

speaker-Amplifier supports a Piezo Speaker. The AK4635 is housed in a space-saving 29-pin Wafer

Level CSP 2.5mm x 3.0mm package.

FEATURE

16-Bit Delta-Sigma Mono CODEC

Recording Function

•

1ch Mono Input

•

MIC Amplifier: (0dB/+3dB/+6dB/+10dB/ +17dB/+20dB/+23dB/+26dB/+29dB/+32dB)

•

Digital ALC (Automatic Level Control)

(+36dB

∼

-54dB, 0.375dB Step, Mute)

•

ADC Performance (MIC-Amp=+20dB)

- S/(N+D): 84dB

- DR, S/N: 86dB

•

Wind-noise Reduction Emphasis

•

5 band notch Filter

Playback Function

•

Digital ALC (Automatic Level Control)

(+36dB

∼

-54dB, 0.375dB Step, Mute)

•

Mono Line Output: S/(N+D) : 85dB, S/N : 93dB

•

Mono Class-D Speaker-Amp

- BTL Output

- Output Power: 400mW @ 8Ω (SVDD=3.3V)

- S/(N+D): 55dB (150mW@8Ω)

•

Beep Generator

Video Function

•

A Composite Video Input

•

Gain Control (-1.0dB

∼

+10.5dB, 0.5dB Step)

•

Low Pass Filter

•

A Video-Amp for Composite Video Signal(+6dB)

•

DC Direct Output or Sag Compensation Output

Power Management

PLL Mode:

•

Frequencies:

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

1fs (FCK pin)

16fs, 32fs or 64fs (BICK pin)

EXT Mode:

•

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

Sampling Rate:

•

PLL Slave Mode (FCK pin): 7.35kHz

~

48kHz

•

PLL Slave Mode (BICK pin): 7.35kHz

~

48kHz

•

PLL Slave Mode (MCKI pin):

2007/10

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Rev. 0.6