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Home > Mixed Signal IC's > Audio Converter > CODEC > AK4675
AK4675
Integrated stereo audio CODEC with dual PCM interface
The AK4675 is a highly integrated Audio CODEC with dual PCM interface, enabling to manage audio and voice source from an application processor, a baseband chip, and a Bluetooth module by one chip.
The AK4675 has a mono 1.6W drivability SPK amp and a stereo cap-less GND-ref output HP amp, offering space-saving and high sound quality. The device is available in a small 83-pin BGA and ideal for audio feature rich portable applications such as Smartphones, PDAs and PNDs.
Features
- Analog Inputs and Routings
Four Stereo Input and Selectors
Acceptable Single-ended mode or Full-differential mode
MIC Bias Amp and MIC Amplifier: +30 ~ - 12dB, 3dB step
Mixing and Routing to Analog outputs directly
Stereo A/D Converter with HPF and sound processing
- Analog Outputs and Routings
Two Stereo Line Outputs
One Stereo Line-Out/Mono 32Ω-30mW SPK Driver
Stereo D/A Converter with:
Digital Volume, 5-Band EQ, Stereo/Mono Mixing
- Dual PCM I/F Source
Mixing to digital audio source and Routing to Audio I/F or Analog Out
- Sound Processor
Digital ALC: +36dB ~ - 54dB, 0.375dB Step and Mute
Wind-noise Reduction Filter
Stereo Separation Enhancement
5-Band Programmable Notch Filter
- Mono Loudness SPK Amp
Class-D Filter-less BTL Output
Output Power: 1.6W at 8Ω, 5.0V; 0.8W at 8Ω, 3.6V
THD+N: -65dB at Po=0.25W, SVDDA=3.6V
ALC
Pop Noise Free at Power-ON/OFF and Mute
Supporting Thermal shutdown / Short protection
- Stereo Cap-less Headphone Amplifier
Ground -Ref Output by internally generated negative rail
Output Power: 64mW x 2ch at 16Ω, SVDDA=3.3V, THD+N =1%
THD+N: -58dB at 16Ω, Po= 30mW, SVDDA=3.3V
Outputs Volume: +12dB to -50dB, 2dB Step
Stereo/Mono Mix Selector
Pop Noise Free at Power-ON/OFF and Mute
- Audio Interface Format:
16bit MSB justified, 16bit LSB justified, 16-24bit I2S, DSP Mode
Sampling Frequency: 8 kHz ~ 48k Hz
Master/Slave Mode
Master Clock Input: 256fs, 384fs, 512fs, 768fs or 1024fs
Master Clock Output: 32fs, 64fs,128fs, or 256fs
- Dual PCM Interface Portion
Connecting to the baseband chip and the Bluetooth module
Sample Rate: 8 kHz
Digital Volume
Sample Rate Converter between Audio-I/F and PCM I/F
Up sample: up to x6, Down sample: down to x1/6
Audio/Voice Interface Format:
16bit Linear, 8bit A-law, 8bit μ-law, Short/Long Frame, I2S, MSB justified
- 10bit SAR ADC with 3 Input Selector
- Power Save Mode
- Microcomputer Control I/F:
I2C Bus (Ver 1.0, 400kHz High Speed Mode )
- Operating Temperature: -30 ~ 85℃
- Power Supply:
Analog 1: 2.2 ~ 3.6V, Analog2: 2.6 ~ 3.6V, Digital I/F: 1.6 ~ 3.6V
Speaker Amp: 3.0 ~ 5.5V
- Package:
83pin BGA (5.5mm x 5.5mm, 0.5mm pitch)
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Applications
- Smartphones
- PDAs
- Personal Navigation Devices
- Personal Multimedia Players
AK4675 BLOCK DIAGRAM
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Data Sheet
Rev. MS0963-E-00 2008/05
PDF : 2127KB / 178pages
Evaluation Board Manual
Rev. KM095500 2008/06
PDF : 2792KB / 56pages
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