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AD1849 PDF预览

AD1849

更新时间: 2024-01-21 04:36:43
品牌 Logo 应用领域
亚德诺 - ADI 解码器编解码器
页数 文件大小 规格书
28页 323K
描述
Parallel-Port 16-Bit SoundPort Stereo Codec

AD1849 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:QFP包装说明:TQFP-44
针数:44Reach Compliance Code:not_compliant
HTS代码:8542.39.00.01风险等级:5.9
商用集成电路类型:CONSUMER CIRCUITJESD-30 代码:S-PQFP-G44
JESD-609代码:e0长度:10 mm
功能数量:1端子数量:44
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:LQFP
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:1.6 mm最大压摆率:130 mA
最大供电电压 (Vsup):5.25 V最小供电电压 (Vsup):4.75 V
表面贴装:YES温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)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
Base Number Matches:1

AD1849 数据手册

 浏览型号AD1849的Datasheet PDF文件第2页浏览型号AD1849的Datasheet PDF文件第3页浏览型号AD1849的Datasheet PDF文件第4页浏览型号AD1849的Datasheet PDF文件第5页浏览型号AD1849的Datasheet PDF文件第6页浏览型号AD1849的Datasheet PDF文件第7页 
Parallel-Port 16-Bit  
SoundPort Stereo Codec  
a
AD1848K  
supply. It provides a direct, byte-wide interface to both ISA  
(“AT ”) and EISA computer buses for simplified implementa-  
tion on a computer motherboard or add-in card. T he AD1848K  
generates enable and direction controls for IC buffers such as  
74_245.  
FEATURES  
Single-Chip Integrated ∑∆ Digital Audio Stereo Codec  
Supports the Microsoft Window s Sound System ®  
Multiple Channels of Stereo Input  
Analog and Digital Signal Mixing  
Program m able Gain and Attenuation  
On-Chip Signal Filters  
T he AD1848K SoundPort Stereo Codec supports a DMA re-  
quest/grant architecture for transferring data with the host com-  
puter bus. One or two DMA channels can be supported.  
Programmed I/O (PIO) mode is also supported for control  
register accesses and for applications lacking DMA control. T wo  
input control lines support mixed direct and indirect addressing  
of twenty-one internal control registers over this asynchronous  
interface.  
Digital Interpolation  
Analog Output Low -Pass  
Sam ple Rates from 5.5 kHz to 48 kHz  
68-Lead PLCC and 68-Lead TQFP Packages  
Operation from +5 V Supplies  
Byte-Wide Parallel Interface to ISA and EISA Buses  
Supports One or Tw o DMA Channels and  
Program m ed I/ O  
External circuit requirements are limited to a minimal number  
of low cost support components. Anti-imaging DAC output fil-  
ters are incorporated on-chip. Dynamic range exceeds 80 dB  
over the 20 kHz audio band. Sample rates from 5.5 kHz to  
48 kHz are supported from external crystals.  
P RO D UCT O VERVIEW  
T he Parallel-Port AD1848K SoundPort® Stereo Codec inte-  
grates the key audio data conversion and control functions into  
a single integrated circuit. T he AD1848K is intended to provide  
a complete, single-chip audio solution for business audio and  
multimedia applications requiring operation from a single +5 V  
T he Codec includes a stereo pair of ∑∆ analog-to-digital  
converters and a stereo pair of ∑∆ digital-to-analog converters.  
Inputs to the ADC can be selected from four stereo pairs of  
SoundPort is a registered trademark of Analog Devices, Inc.  
(Continued on page 9)  
FUNCTIO NAL BLO CK D IAGRAM  
DIGITAL  
SUPPLY  
ANALOG  
SUPPLY  
CRYSTALS  
POWER DOWN  
2
2
ANALOG  
DIGITAL  
L_LINE  
R_LINE  
OSCILLATORS  
L
PLAYBACK REQ  
PLAYBACK ACK  
CAPTURE REQ  
16  
16  
∑∆ A/D  
µ/  
A
L
A
W
GAIN  
GAIN  
CONVERTER  
20  
dB  
L_MIC  
R_MIC  
P
A
R
A
L
L
E
L
MUX  
R
∑∆ A/D  
CONVERTER  
L_AUX1  
R_AUX1  
CAPTURE ACK  
2
ADR1:0  
DATA7:0  
CS  
DIGITAL  
MIX  
8
GAIN/ATTEN/MUTE  
L
P
∑∆ D/A  
CONVERTER  
O
R
T
ATTEN/  
ANALOG  
FILTER  
µ/  
A
L
L_OUT  
R_OUT  
INTERPOL  
ATTENUATE  
ATTENUATE  
WR  
RD  
MUTE  
R
A
W
BUS DRIVER  
CONTROL  
2
∑∆ D/A  
CONVERTER  
ATTEN/  
MUTE  
ANALOG  
FILTER  
INTERPOL  
HOST DMA  
INTERRUPT  
L_AUX2  
R_AUX2  
CONTROL  
REGS  
REFERENCE  
2.25V  
GAIN/ATTEN/MUTE  
2
EXTERNAL  
CONTROL  
REV. 0  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 617/ 329-4700 Fax: 617/ 326-8703  

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