The AK4646 is a stereo CODEC with microphone-amplifiers and speaker-amplifiers. The AK4646 features analog mixing circuits and PLL that allows easy interfacing in mobile phone and portable A/V player designs. The AK4646 is available in a 32pin QFN, utilizing less board space than competitive offerings.
Features
- Recording Path
· Stereo Microphone Input (Full-differential or Single-ended)
· Stereo Line Input
· MIC Amplifier (+32dB/+29dB/+26dB/+23dB/+20dB/+17dB/+10dB/0dB)
· ADC Performance:
S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB)
· Sound Processing:
Wind-noise Reduction Filter, Stereo Separation Emphasis
5 Band Notch Filte
Digital ALC (+36dB ~ -54dB, 0.375dB Step, Mute)
- Playback Path
· Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz)
· Sound Processing:
Stereo Separation Emphasis,
Digital ALC (+36dB ~ -54dB, 0.375dB Step, Mute)
· Stereo Line Output
- Performance:
S/(N+D): 88dB, S/N: 92dB
· Mono Speaker-Amp
S/(N+D): 60dB@150mW, S/N: 90dB
BTL Output
Output Power: 400mW@8Ω (SVDD=3.3V)
- Available for both Dynamic and Piezo Speaker
- Analog Mixing: Mono Input
- Master Clock
· PLL Mode or External Clock Mode
- Acceptable Frequencies in PLL mode:
11.2896MHz, 12MHz, 12.288MHz, 13MHz, 13.5MHz,19.2MHz,
24MHz, 26MHz, 27MHz
- Acceptable Frequencies in External Clock mode:
256fs, 512fs or 1024fs
· Sampling rate: 7.35kHz ~ 48kHz
- µController I/F:
3-wire serial or I2C Bus (Ver 1.0, 400kHz High Speed Mode)
- Audio I/F:
 - Master/Slave mode
- Format: MSB First, 2's complement
· ADC : 16bit MSB justified, I2S or DSP Mode
· DAC : 16bit MSB justified, 16bit LSB justified, 16-24bit I2S,
or DSP Mode
- Operation Temperature:
Ta = -30 ~ 85°C
- Power Supply:
· AVDD: 2.2 ~ 3.6V (typ. 3.3V)
· DVDD: 1.6 ~ 3.6V (typ. 3.3V)
· SVDD : 2.2 ~ 4.0V (typ. 3.3V)
· Power save control available by section
- Package:
AK4646: 32pin QFN (5mm x 5mm, 0.5mm pitch)
AK4646EZ: 32pin QFN (4mm x 4mm, 0.4mm pitch)
- Register Configuration: Backward Compatible with AK4642EN/4643EN
Applications
- Digital Still Cameras (DSC), Digital Video Cameras (DVC)
- Personal Data Assistances (PDA)
- Personal Media Players (PMP)
- Portable Navigation Devices (PND)
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