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AD1954

更新时间: 2024-01-08 23:10:05
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
36页 1445K
描述
SigmaDSP⑩ 3-Channel, 26-Bit Signal Processing DAC

AD1954 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:QFP
包装说明:QFP,针数:44
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.31.00.01风险等级:5.47
商用集成电路类型:CONSUMER CIRCUITJESD-30 代码:S-PQFP-G44
JESD-609代码:e3长度:10 mm
湿度敏感等级:3功能数量:1
端子数量:44最高工作温度:105 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:QFP封装形状:SQUARE
封装形式:FLATPACK峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:2.45 mm
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.8 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:10 mm

AD1954 数据手册

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SigmaDSP
3-Channel, 26-Bit  
Signal Processing DAC  
AD1954  
FE
A
T
URES  
Graphical Custom ProgrammingTools  
5V 3-Channel Audio DAC System  
44-Lead MQFP or 48-Lead LQFP Plastic Package  
Accepts Sample Rates up to 48 kHz  
7 Biquad Filter Sections per Channel  
Dual Dynamic Processor with Arbitrary Input/Output Curve  
and AdjustableTime Constants  
0 ms to 6 msVariable Delay/Channel for Speaker Alignment  
Stereo Spreading Algorithm for Phat Stereo™ Effect  
Program RAM Allows Complete New Program Download  
via SPI Port  
APPLIC
A
T
IONS  
2.0/2.1 Channel Audio Systems (Two Main Channels plus  
Subwoofer)  
Multimedia Audio  
Automotive Sound Systems  
Minicomponent Stereo  
HomeTheater Systems (AC-3 Postprocessor)  
Musical Instruments  
In-Seat Sound Systems (Aircraft, Motor Coaches)  
Parameter RAM Allows Complete Control of MoreThan  
200 Parameters via SPI Port  
SPI Port Features Safe-Upload Mode forTransparent Filter  
Updates  
2 Control Registers Allow Complete Control of Modes and  
MemoryTransfers  
Differential Output for Optimum Performance  
112 dB Signal-to-Noise (Not Muted) at 48 kHz Sample Rate  
(A-Weighted Stereo)  
GENERAL DESCRIPTION  
The AD1954 is a complete 26-bit single-chip 3-channel digital  
audio playback system with built-in DSP functionality for speaker  
equalization, dual-band compression/limiting, delay compensa-  
tion, and image enhancement.These algorithms can be used to  
compensate for real-world limitations of speakers, amplifiers, and  
listening environments, resulting in a dramatic improvement of  
perceived audio quality.  
70 dB Stop-Band Attenuation  
On-Chip ClicklessVolume Control  
The signal processing used in the AD1954 is comparable to that  
found in high-end studio equipment. Most of the processing is  
done in full 48-bit double-precision mode, resulting in very good  
low-level signal performance and the absence of limit cycles or  
idle tones.The compressor/limiter uses a sophisticated two-band  
algorithm often found in high-end broadcast compressors.  
Hardware and Software Controllable Clickless Mute  
Digital De-emphasis Processing for 32 kHz, 44.1 kHz, and  
48 kHz Sample Rates  
Flexible Serial Data Port with Right-Justified, Left-Justified,  
I
2S Compatible, and DSP Serial Port Modes  
Auxiliary Digital Input  
(
Continued on 9
)  
FUNCTIONAL BLOCK DIAGRAM  
SERIAL DATA  
OUTPUT  
3
3
AD1954  
26 22  
DSP CORE  
3
3
AUDIO DATA  
MUX  
SERIAL DATA  
INPUTS  
DAC – L  
DAC – R  
DATA FORMAT:  
3.23 (SINGLE PRECISION)  
3.45 (DOUBLE PRECISION)  
MASTER CLOCK  
OUTPUT  
ANALOG  
OUTPUTS  
MCLK  
GENERATOR  
MASTER  
CLOCK INPUTS  
MCLK  
MUX  
DAC – SW  
(256f /512f )  
S
S
AUX SERIAL  
DATA INPUT  
DATA CAPTURE  
OUT  
DIGITAL  
OUTPUT  
SPI DATA  
OUTPUT  
SERIAL CONTROL  
INTERFACE  
3
SPI INPUT  
RAM  
ROM  
REV. A  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed byAnalog Devices for its  
use, nor for any infringements of patents or other rights of third parties  
that may result from its use. No license is granted by implication or other-  
wise under any patent or patent rights ofAnalog Devices.Trademarks and  
registered trademarks are the property of their respective companies.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  

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