AKM AK4629高性能多路音频CODEC解决方案
原标题:AKM AK4629高性能多路音频CODEC解决方案
akm公司的AK4629是高性能多路音频CODEC, 包括四路24位ADC和八路24位DAC通路,ADC采用增强双比特架构,DAC采用先进的多比特架构,具有非常低的噪音性能.ADC的取样速率高达 96kHz,DAC的取样频率高达192kHz,ADC的S/(N+D)为92dB,动态范围S/N为102dB(单端输入),DAC的S/(N+D)为 90dB,动态范围S/N为102dB,主要用在家庭影院,pro audio音响和汽车音响设备.本文介绍了AK4629主要特性, 方框图, 典型应用电路图以及电源连接案例,AKD4629-A评估板主要功能,框图,电路图和元件布局图.
AK4629: High Performance Multi-channel Audio CODEC
The AK4629 is a single chip audio CODEC that includes four ADC channels and eight DAC channels.
The converters are designed with Enhanced Dual Bit architecture for the ADC’s, and Advanced Multi-Bit architecture for the DAC, enabling very low noise performance. The AK4629 ADC supports both single-ended and differential inputs and outputs. A wide range of applications can be realized, including home theater, pro audio and car audio. The AK4629 is available in a 48-pin LQFP package.
AK4629主要特性:
4ch 24bit ADC
- 64x Oversampling
- Sampling Rate up to 96kHz
- Linear Phase Digital Anti-Alias Filter
- Single-ended / Differential Input
- S/(N+D): 92dB (Single-ended, Differential)
- Dynamic Range, S/N: 102dB (Single-ended), 103dB (Differential)
- Digital HPF for offset cancellation
- I/F format: MSB justified, I2S or TDM
8ch 24bit DAC
- 128x Oversampling
- Sampling Rate up to 192kHz
- 24bit 8 times Digital Filter
- Single-ended Outputs
- On-chip Switched-Capacitor Filter
- S/(N+D): 90dB
- Dynamic Range, S/N: 106dB
- I/F format: MSB justified, LSB justified(20bit,24bit), I2S or TDM
- Individual channel digital volume with 128 levels and 0.5dB step
- Soft mute
- De-emphasis for 32kHz, 44.1kHz and 48kHz
- Zero Detect Function
High Jitter Tolerance
TTL Level Digital I/F
3-wire Serial and I2C Bus μP I/F for mode setting
Master clock: 256fs, 384fs or 512fs for fs=32kHz to 48kHz
128fs, 192fs or 256fs for fs=64kHz to 96kHz
128fs for fs=120kHz to 192kHz
Power Supply: 4.5 to 5.5V
Power Supply for output buffer: 2.7 to 5.5V
Small 48pin LQFP
图1. AK4629方框图
图2. AK4629典型应用电路图
图3. AK4629电源连接案例
AKD4629-A评估板
The AKD4629-A is an evaluation board for the AK4629, a single chip CODEC that includes four channels of ADC and six channels of DAC. The AKD4629-A also has the digital audio interface and can achieve the interface with digital audio systems via opt-connector or BNC connector.
AKD4629-A评估板功能:
• On-board analog output buffer circuit
• Compatible with 2 types of interface
- AK4118 (DIT&DIR) with optical output/input and BNC output/input
- Direct interface with AC3 decoder by 10pin header
• 10pin header for serial control interface
图4.AKD4629-A评估板方框图
责任编辑:HanFeng
【免责声明】
1、本文内容、数据、图表等来源于网络引用或其他公开资料,版权归属原作者、原发表出处。若版权所有方对本文的引用持有异议,请联系拍明芯城(marketing@iczoom.com),本方将及时处理。
2、本文的引用仅供读者交流学习使用,不涉及商业目的。
3、本文内容仅代表作者观点,拍明芯城不对内容的准确性、可靠性或完整性提供明示或暗示的保证。读者阅读本文后做出的决定或行为,是基于自主意愿和独立判断做出的,请读者明确相关结果。
4、如需转载本方拥有版权的文章,请联系拍明芯城(marketing@iczoom.com)注明“转载原因”。未经允许私自转载拍明芯城将保留追究其法律责任的权利。
拍明芯城拥有对此声明的最终解释权。