AK4649VN

Low Power 24-Bit 2ch ADC & 2ch DAC with ALC/Eq and MIC/SPK-Amp

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Description

The AK4649VN features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4649VN is available in 32pin QFN (5x5mm 0.5mm pitch) utilizing less board space than competitive offerings.

Key Features

1.   Applications: Digital Still Camera(DSC), Digital Video Camera(DVC), Security Camera

2.   Recording Function

· Stereo Single-ended input with two Selectors

· MIC Amplifier

(+29dB/+26dB/+23dB/+20dB/+16dB/+12dB/+9dB/+6dB/+3dB/0dB)

· Digital ALC (Automatic Level Control)

- Setting Range: +36dB ~ -54dB, 0.375dB Step

- Noise Suppression

· ADC Performance: S/(N+D): 80dB, DR, S/N: 89dB (MIC-Amp=+20dB, AVDD=3.3V)

S/(N+D): 80dB, DR, S/N: 100dB (MIC-Amp=0dB, AVDD=3.3V)

· Wind-noise Reduction Filter

· 5 Band Notch Filter

· Stereo Separation Emphasis

· Digital MIC Interface

3.   Playback Function

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

· Digital ALC (Automatic Level Control)

- Setting Range: +36dB ~ -54dB, 0.375dB Step

- Noise Suppression

· Digital Volume Control:

- 0dB ~ -18dB, 6dB Step & 256 Linear Step (+0dB ~ - 48.13dB & Mute)

· Stereo Separation Emphasis

· Stereo Line Output

- S/(N+D): 87dB, S/N: 97dB

· Mono Speaker-Amp

- SPK-AMP Performance: S/(N+D): 60dB@150mW, S/N: 98dB

- BTL Output

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

· Analog Mixing: Mono Input

4.    Power Management

5.   Master Clock:

(1) PLL Mode

· Frequencies: 11.2896MHz, 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)

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

· PLL Slave Mode (LRCK pin): 7.35kHz ~ 48kHz

· PLL Slave Mode (BICK pin): 7.35kHz ~ 48kHz

· PLL Slave Mode (MCKI pin):

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

· PLL Master Mode:

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

· EXT Master/Slave Mode:

7.35kHz ~ 48kHz (256fs), 7.35kHz ~ 26kHz (512fs), 7.35kHz ~ 13kHz (1024fs)

7.   mP I/F: 3-wire Serial, I2C Bus (Ver 1.0, 400kHz Fast-Mode)

8.   Master/Slave mode

9.       Audio Interface Format: MSB First, 2’s complement

· ADC: 24bit MSB justified, 16/24bit I2S

· DAC: 24bit MSB justified, 16bit LSB justified, 24bit LSB justified, 16/24bit I2S

10.   Ta = -40 ~ 85°C

11.   Power Supply:

· Analog Power Supply (AVDD): 3.0 ~ 3.6V

· Digital Power Supply (DVDD): 3.0 ~ 3.6V

· Speaker Power Supply (SVDD):  3.0 ~ 3.6V

12.   Package : 32pin QFN (5 x 5mm, 0.5mm pitch)

13.   Register Compatible with the AK4646

14.   Evaluation Board: AKD4649

 

 

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