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Home > Mixed Signal IC's > Audio Converter > CODEC > AK4691
AK4691
Low Power 2ch ADC & 4ch DAC with MIC/HP/SPK-Amp
| The AK4691 is a 16bit, 4ch ADC and 2ch DAC with Microphone-Amplifier, Headphone-Amplifier, and Speaker-Amplifier. The recording block corresponds to supports 4-channel inputs, and also has 3-input selector for Internal/External MIC and LINE, output power for Microphone, Pre-Amp, and ALC (Automatic Level Control) circuit. The playback bock has Lineout-Amplifier, Headphone-Amplifier, and Speaker-Amplifier. The AK4691 is suitable for portable applications such as built-in LCD. The AK4691 is available in a 57pin BGA, utilizing less board space than competitive offerings. |
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- Applications: Digital video cameras, Digital still cameras and Array microphones
- Recording Function
- 4-channel Single-ended Pre-Amp
(Pre-Amp Gain: 0dB, +18dB, +20dB, +24dB or +28dB)
- 2-channel Line Input
- 3-input Selector (Internal MIC, External MIC or LINE)
- 4-channel Digital ALC (Automatic Level Control)
- ADC Performance: S/(N+D): 82dB, DR, S/N: 90dB (Pre-Amp=+24dB)
 S/(N+D): 85dB, DR, S/N: 90dB (LINE)
- Wind-noise Reduction Filter
- Stereo Separation Emphasis
- Fade-in/out Function
- Playback Function
- Digital De-emphasis Filter (tc=50/15 μs, fs=32kHz, 44.1kHz, 48kHz)
- Digital Volume (+12dB ~ - 115.0dB, 0.5dB Step, Mute)
- Digital ALC (Automatic Level Control)
- Stereo Separation Emphasis
- Stereo Line Output
- Performance : S/(N+D): 85dB, S/N: 90dB
- Output Level: -3.9dBV @ AVDD=LVDD=3.0V, LVOL=0dB
+2dBV @ AVDD=3.0V, LVDD=4.5V,
LVOL=+5.9dB
- Stereo Headphone-Amp
- S/(N+D): 70dB, S/N: 90dB
- Output Power : 58mW @ 16Ω (LVDD=3.3V)
- Pop Noise Free at Power ON/OFF
- Mono Speaker-Amp
- S/(N+D): 50dB@240mW, S/N: 90dB
- BTL Output
- Output Power: 400mW @ 8Ω (SVDD=3.3V)
- Analog Mixing
- Power Management
- Master Clock :
(1) PLL Mode
- Frequencies :
11.2896MHz, 12MHz, 12.288MHz, 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)
- Output Master Clock Frequencies : 32fs/64fs/128fs/256fs
- Sampling Rate:
- PLL Slave Mode (LRCK pin): 7.35 kHz ~ 48k Hz
- PLL Slave Mode (BICK pin): 7.35 kHz ~ 48k Hz
- 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 Slave Mode:
7.35 kHz ~ 48kHz (256fs), 7.35 kHz ~ 48kHz (512fs),
7.35kHz ~ 13kHz (1024fs)
- μP I/F: 3 -wire Serial , I2 C Bus (Ver 1.0, 400kHz Fast-Mode)
- Master/Slave mode
- Audio Interface Format: MSB First, 2's complement
- ADC: 16bit MSB justified , I2S, TDM Mode
- DAC: 16bit MSB justified, 16bit LSB justified , 16-24bit I2S, TDM Mode
- Ta = - 30 ~ 85 ° C
- Power Supply Voltage:
- Analog (AVDD), Digital (DVDD): 2.6 ~ 3.6V
- MIC ( MVDD): 2.6 ~ 5.5V
- Lineout & Headphone ( LVDD): 2.6 ~ 5.5V
- Speaker (SVDD): 2.6 ~ 3.6V
- Digital I/F ( TVDD1, TVDD2): 1.6 ~ 3.6V
- Package: 57pin BGA (5mm x 5mm, 0.5mm pitch, height: 1.0mm)
- Evaluation Board: AKD4691
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AK4691 BLOCK DIAGRAM
Data Sheet PDF
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Data Sheets
Rev. MS0672-E-00 2007/11
PDF : 1011KB / 80pages
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Evalution Board Manual
Rev. KM089100 2007/06
PDF : 1983KB / 68pages |
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