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Home > Mixed Signal IC's > Audio Converter > CODEC > AK4645EZ
AK4645EZ
Low Power 2ch ADC & 2ch DAC with ALC/Eq and MIC/HP-Amp
| The AK4645 is a stereo CODEC with a built-in Microphone-Amplifier and Headphone-Amplifier. The AK4645 features analog mixing circuits and PLL that allows easy interfacing in mobile phone and portable A/V player designs. The AK4645 is available in a 32pin QFN (4mm x 4mm), utilizing less board space than competitive offerings. |
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- Applications: Mobile Phone, PDA, PMP and Portable Navigation Device
- Recording Function
 · 4 Stereo Input Selector
· Stereo Mic Input (Full-differential or Single-ended)
· Stereo Line Input
· MIC Amplifier (+32dB/+26dB/+20dB or 0dB)
· Digital ALC (Automatic Level Control)
(+36dB ~ -54dB, 0.375dB Step, Mute)
· ADC Performance: S/(N+D): 83dB, DR, S/N: 86dB (MIC-Amp=+20dB)
S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB)
· Wind-noise Reduction Filter
· Stereo Separation Emphasis
· Programmable EQ
- Playback Function
· Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz)
· Bass Boost
· Soft Mute
· Digital Volume (+12dB ~ -115.0dB, 0.5dB Step, Mute)
· Digital ALC (Automatic Level Control)
(+36dB ~ -54dB, 0.375dB Step, Mute)
· Stereo Separation Emphasis
· Programmable EQ
· Stereo Line Output
- Performance: S/(N+D): 88dB, S/N: 92dB
· Stereo Headphone-Amp
- S/(N+D): 70dB@7.5mW, S/N: 90dB
- Output Power: 70mW@16Ω (HVDD=5V), 62mW@16Ω (HVDD=3.3V)
- Pop Noise Free at Power ON/OFF
· Analog Mixing: 4 Stereo Input
- Power Management
- Master Clock:
(1) PLL Mode
· Frequencies:
- MCKI pin: 11.2896MHz, 12MHz, 12.288MHz, 13MHz, 13.5MHz,
19.2MHz, 24MHz, 26MHz, 27MHz
- LRCK pin: 1fs
- BICK pin: 32fs or 64fs
(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): 7.35kHz ~ 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)
- μP I/F: 3-wire serial, I2C Bus (Ver 1.0, 400kHz Fast-mode)
- Master/Slave mode
- Audio Interface Format: MSB First, 2's complement
· ADC : 16bit MSB justified, I2S, DSP Mode
· DAC : 16bit MSB justified, 16bit LSB justified, 16-24bit I2S, DSP Mode
- Ta = -30 ~ 85°C
- Power Supply:
· AVDD, DVDD: 2.6 ~ 3.6V (typ. 3.3V)
· HVDD: 2.6 ~ 5.25V (typ. 3.3V/5.0V)
· TVDD (Digital I/O): 1.6 ~ 3.6V (typ. 3.3V)
- Package: 32pin QFN (4mm x 4mm, 0.4mm pitch)
- Register Compatible with AK4644
- Evaluation Board: AKD4645
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AK4645EZ BLOCK DIAGRAM
Data Sheet PDF
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Data Sheets
Rev. MS0605-E-00 2007/06
PDF : 960KB / 96pages
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