ak4645ez AKM Semiconductor, Inc., ak4645ez Datasheet

ak4645ez

Manufacturer Part Number

ak4645ez

Description

Stereo Codec With Mic/hp-amp

Manufacturer

AKM Semiconductor, Inc.

Datasheet

1.AK4645EZ.pdf (96 pages)

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The AK4645 is a stereo CODEC with a built-in Microphone-Amplifier and Headphone-Amplifier. The

AK4645 features analog mixing circuits and PLL that allows easy interfacing in mobile phone and portable

A/V player designs. The AK4645 is available in a 32pin QFN (4mm x 4mm), utilizing less board space

than competitive offerings.

MS0605-E-00

1. Recording Function

2. Playback Function

3. Power Management

4. Master Clock:

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

6. Sampling Rate:

(1) PLL Mode

(2) External Clock Mode

4 Stereo Input Selector

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

Stereo Line Input

MIC Amplifier (+32dB/+26dB/+20dB or 0dB)

Digital ALC (Automatic Level Control)

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

Wind-noise Reduction Filter

Stereo Separation Emphasis

Programmable EQ

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

Bass Boost

Soft Mute

Digital Volume (+12dB ( (115.0dB, 0.5dB Step, Mute)

Digital ALC (Automatic Level Control)

Stereo Separation Emphasis

Programmable EQ

Stereo Line Output

Stereo Headphone-Amp

Analog Mixing: 4 Stereo Input

PLL Slave Mode (LRCK pin): 7.35kHz

PLL Slave Mode (BICK pin): 7.35kHz

PLL Slave Mode (MCKI pin):

8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz

Frequencies:

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

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

- Pop Noise Free at Power ON/OFF

- S/(N+D): 70dB@7.5mW, S/N: 90dB

- Output Power: 70mW@16 (HVDD=5V), 62mW@16 (HVDD=3.3V)

- MCKI pin: 11.2896MHz, 12MHz, 12.288MHz, 13MHz, 13.5MHz,

- LRCK pin: 1fs

- BICK pin: 32fs or 64fs

(+36dB

19.2MHz, 24MHz, 26MHz, 27MHz

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

GENERAL DESCRIPTION

54dB, 0.375dB Step, Mute)

FEATURES

Stereo CODEC with MIC/HP-AMP

- 1 -

48kHz

AK4645EZ

[AK4645EZ]

2007/06

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