AK4537中文資料旭化成微電子數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The AK4537 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 AK4537 is available in a 52-QFN, utilizing less board space than competitive offerings.

FEATURES

1. Resolution : 16bits

2. Recording Function

? Stereo Mic Input

? Stereo Line Input

? 1st MIC Amplifier : +20dB or 0dB

? 2nd Amplifier with ALC

+27.5dB ～ -8dB, 0.5dB Step (MIC input)

+12dB ～ -23.5dB, 0.5dB Step (LINE input)

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

S/(N+D) : 88dB, DR, S/N : 91dB (LINE input)

3. Playback Function

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

? Digital Volume (0dB ～ -127dB, 0.5dB Step, Mute)

? Stereo Headphone-Amp

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

- Output Power : 15mW@16? (HVDD=3.3V)

- Click Noise Free at Power ON/OFF

? Mono Speaker-Amp with ALC

- S/(N+D) : 64dB@150mW, S/N : 90dB

- BTL Output

- Output Power : 400mW@8? (BEEP Input, HVDD=3.3V) 300mW@8? (MIN Input, ALC2=OFF, HVDD=3.3V)

? Mono and Stereo Beep Inputs

? Mono Line Output

- Differential Output

- Performance : S/(N+D) : 89dB, S/N : 95dB

? Stereo Line Output

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

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 / I2C Bus

9. Master/Slave mode