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AK4551 PDF预览

AK4551

更新时间: 2024-11-24 22:47:43
品牌 Logo 应用领域
AKM /
页数 文件大小 规格书
15页 112K
描述
LOW POWER & SMALL PACKAGE 20BIT CODEC

AK4551 数据手册

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ASAHI KASEI  
[AK4551]  
AK4551  
Low Power & Small Package 20bit ∆Σ CODEC  
GENERAL DESCRIPTION  
The AK4551 is a low voltage 20bit A/D & D/A converter for portable digital audio system. In the AK4551,  
the loss of accuracy form clock jitter is also improved by using SCF techniques for on-chip post filter.  
Analog signal input/output of the AK4551 are single-ended, therefore, any external filters are not  
required. The AK4551 is suitable for portable digital audio system, as the AK4551 is lower power  
dissipation and a smaller package than AK4519.  
FEATURES  
o HPF for DC-offset cancel (fc=3.4Hz)  
o Single-ended ADC  
- S/(N+D): 82dB@VDD=2.5V  
- Dynamic Range, S/N: 89dB@VDD=2.5V  
o Single-ended DAC  
- Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling  
- S/(N+D): 85dB@VDD=2.5V  
- Dynamic Range, S/N: 92dB@VDD=2.5V  
o Audio I/F format: MSB First, 2’s Compliment (AK4519 compatible)  
- ADC: 20bit MSB justified  
- DAC: 20bit LSB justified  
o Input/Output Voltage: 0.6 X VDD (=1.5Vpp@VDD=2.5V)  
o High Jitter Tolerance  
o Sampling Rate: 8kHz to 50kHz  
o Master Clock: 256fs or 384fs or 512fs  
o Power Supply: 2.2 to 3.6V  
o Low Power Supply Current: 10mA  
o Ta = -20 to 85°C  
o Very Small Package: 16pin TSSOP  
VDD  
VSS  
Clock  
Divider  
MCLK  
∆Σ  
Decimation  
Filter  
AINL  
AINR  
Modulator  
LRCK  
SCLK  
∆Σ  
Decimation  
Filter  
Modulator  
SDTO  
SDTI  
Serial I/O  
Interface  
VCOM  
Common Voltage  
DEM0  
DEM1  
∆Σ  
8X  
AOUTL  
LPF  
Modulator  
Interpolator  
PWDA  
PWAD  
∆Σ  
8X  
AOUTR  
LPF  
Modulator  
Interpolator  
MS0029-E-00  
2000/5  
- 1 -  

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