| DIGITAL
AUDIO and MULTIMEDIA SOUND CODECs |
| AK4687 |
| 2ch ADC & 2ch DAC with Input Selector and Cap-less 2Vrms I/O |
| The AK4687 is a stereo audio CODEC with 2-channel input selector and a line driver. The interfaces of ADC/DAC can accept up to 24bit input data and support asynchronous operation. The input range of the pre-amplifier, that supports 3ch stereo inputs, is selectable by external resistors. Both the input stereo selector and output drivers support ground reference 2Vrms In/Output, making it possible to remove AC-coupling capacitors and reducing external parts. The AK4687 has a dynamic range of 99dB for ADC, 105dB for DAC. It is well suitable for digital recording systems, digital TVs, Blu-ray recorders and Home theater systems. |
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- Applications: Blu-ray Recorders, Digital TVs, AV Receivers
- Asynchronous ADC/DAC Operation
- 3:1 Capless Stereo Line Input Selector
- 24bit Stereo ADC
- 64x Oversampling
- Sampling Rate up to 48kHz
- Linear Phase Digital Anti-Alias Filter
- S/(N+D): 83dB
- Dynamic Range, S/N: 99dB
- Digital HPF for Offset Cancellation
- 24bit Two Stereo DAC
- 128x Oversampling
- Sampling Rate up to 192kHz
- 24bit 8 times Digital Filter
- S/(N+D): 95dB
- Dynamic Range, S/N: 105dB
- De-emphasis Filter
- High Jitter Tolerance
- External Master Clock Input:
 256fs, 384fs, 512fs 768fs (fs=32kHz ~ 48kHz)
128fs, 192fs, 256fs 384fs (fs=64kHz ~ 96kHz)
128fs, 192fs (fs=128kHz ~ 192kHz)
- 2 Audio Serial I/F (PORT1, PORT2)
- Master/Slave mode (PORT1)
- I/F format
PORT2: MSB, LSB justified (16/24 bit), I2S
PORT1: MSB, LSB justified (16/24 bit), I2S
- Hardware / I2C-bus Control
- Operating Voltage:
- Digital I/O and Charge Pump: 3.0V ~ 3.6V
- ADC Analog: 3.0V ~ 3.6V
- DAC Analog: 3.0V ~ 3.6V
- Package: 48pinLQFP
- Evaluation Board: AKD4687
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PDF
Download |
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Data Sheets
Rev. MS1307-E-00 2011/05
PDF : 485KB / 38pages |
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Evaluation Board Manual
Rev. KM104603 2011/06
PDF : 1887KB / 52pages |
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| AK4687 BLOCK DIAGRAM |
