AK4534 参数 Datasheet PDF下载

ASAHI KASEI

[AK4534]

AK4534

16Bit

∆Σ

CODEC with MIC/HP/SPK-AMP

GENERAL DESCRIPTION

The AK4534 targeted at PDA and other low-power, small size applications. It features a 16-bit stereo

CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier and Speaker-Amplifier. Input circuits

include a Microphone-Amplifier and an ALC (Auto Level Control) circuit. The AK4534 is available in a

52-QFN, utilizing less board space than competitive offerings.

FEATURES

1. Resolution : 16bits

2. Recording Function

•

1ch Mono Input

•

1

st

MIC Amplifier : +20dB or 0dB

•

2

nd

Amplifier with ALC : +27.5dB

∼

-8dB, 0.5dB Step

•

ADC Performance : S/(N+D) : 79dB, DR, S/N : 83dB

3. Playback Function

•

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

•

Digital Volume (0dB

∼

-127dB, 0.5dB Step, Mute)

•

Headphone-Amp

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

- Output Power : 15mW@16Ω (HVDD=3.3V)

•

Mono Speaker-Amp with ALC

- S/(N+D) : 64dB@250mW, 20dB@300mW, S/N : 90dB

- BTL Output

- Output Power : 300mW@8Ω (THD=10%, HVDD=3.3V)

•

Mono and Stereo Beep Inputs

•

Mono Line Output

4. Power Management

5. Master Clock

(1) PLL Mode

•

Frequencies : 11.2896MHz, 12MHz and 12.288MHz

•

Input Level : CMOS

(2) External Clock Mode

•

Frequencies : 2.048MHz

∼

12.288MHz

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

7. Sampling Rate

(1) PLL Mode

•

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

(2) External Clock Mode

•

8kHz

∼

48kHz

8. Control mode: 4-wire Serial / I

2

C Bus

9. Master/Slave mode

10. Audio Interface Format : MSB First, 2’s compliment

•

ADC : I

2

S, 16bit MSB justified

•

DAC : I

2

S, 16bit MSB justified, 16bit LSB justified

11. Ta = -10

∼

70°C

MS0133-E-03

-1-

2003/5