- Recording Function
· 3 Stereo Inputs 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 - Playback Function
· Digital De-emphasis Filter (tc=50/15ms, fs=32kHz, 44.1kHz, 48kHz)
· Digital Volume (+12dB ~ -115.0dB, 0.5dB Step, Mute)
· Digital ALC (Automatic Level Control)
![]() (+36dB ~ -54dB, 0.375dB Step, Mute)
· Stereo Separation Emphasis
· Programmble EQ
· Stereo Line Output
![]() - Performance: S/(N+D): 88dB, S/N: 92dB
· Mono Receiver-Amp
![]() - BTL Output
![]() - Output Power: 30mW@32WΩ (AVDD=3.3V)
· 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: 3 Stereo Inputs - 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): 7.35kHz ~ 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 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 High Speed Mode)
- Master/Slave mode
- Audio Interface Format: MSB First, 2’s compliment
· 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) - Package: 32pin QFN (5mm x 5mm, 0.5mm pitch)
- Pin/Register Compatible with AK4642EN
- Evaluation Board: AKD4644
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