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ADS7882 PDF预览

ADS7882

更新时间: 2024-11-07 06:36:27
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
29页 652K
描述
12-BIT, 3-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER

ADS7882 数据手册

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ADS7882  
www.ti.com ........................................................................................................................................................................................... SLAS630DECEMBER 2008  
12-BIT, 3-MSPS  
LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER  
1
FEATURES  
DESCRIPTION  
3-MHz Sample Rate, 12-Bit Resolution  
Zero Latency  
The ADS7882 is a 12-bit 3-MSPS A-to-D converter  
with 2.5-V internal reference. The device includes a  
capacitor based SAR A/D converter with inherent  
sample and hold. The device offers a 12-bit parallel  
interface with an additional byte mode that provides  
easy interface with 8-bit processors. The device has  
a pseudo-differential input stage.  
Unipolar, Pseudo Differential Input, Range:  
0 V to 2.5 V  
High-Speed Parallel Interface  
69.5 dB SNR at 100 kHz I/P  
Power Dissipation 85 mW at 3 MSPS  
Nap Mode (10 mW Power Dissipation)  
Power Down (10 µW)  
The –IN swing of ±200 mV is useful to compensate  
for ground voltage mismatch between the ADC and  
sensor and also to cancel common-mode noise. With  
nap mode enabled, the device operates at lower  
power when used at lower conversion rates. The  
device is available in 48-pin TQFP package.  
Internal Reference  
Internal Reference Buffer  
48-Pin TQFP Package  
APPLICATIONS  
BYTE  
SAR  
Output  
Latches  
and  
3-State  
Drivers  
Optical Networking (DWDM, MEMS Based  
Switching)  
+
_
+IN  
−IN  
CDAC  
12/8-Bit Parallel  
Data Output Bus  
Spectrum Analyzers  
Comparator  
CLOCK  
REFIN  
High Speed Data Acquisition Systems  
High Speed Close-Loop Systems  
Telecommunication  
CONVST  
Conversion  
and  
Control Logic  
BUSY  
CS  
2.5 V  
RD  
REFOUT  
Internal  
Reference  
Ultra-Sound Detection  
PWD/RST  
A_PWD  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  

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