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ADS7884

更新时间： 2024-11-07 04:48:51
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
17页 645K
描述
12-BIT, 3-MSPS, MICROPOWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTER

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ADS7884 数据手册

 浏览型号ADS7884的Datasheet PDF文件第2页浏览型号ADS7884的Datasheet PDF文件第3页浏览型号ADS7884的Datasheet PDF文件第4页浏览型号ADS7884的Datasheet PDF文件第5页浏览型号ADS7884的Datasheet PDF文件第6页浏览型号ADS7884的Datasheet PDF文件第7页 
ADS7883  
www.ti.com ....................................................................................................................................................................................................... SLAS594–JULY 2008  
12-BIT, 3-MSPS, MICROPOWER, MINIATURE  
SAR ANALOG-TO-DIGITAL CONVERTER  
1
FEATURES  
APPLICATIONS  
•
•
•
Base Band Converters in Radio  
Communication  
Motor Current/Bus Voltage Sensors in Digital  
Drives  
Optical Networking (DWDM, MEMS Based  
Switching)  
Optical Sensors  
Battery Powered Systems  
Medical Instrumentations  
High-Speed Data Acquisition Systems  
High-Speed Closed-Loop Systems  
•
•
•
•
•
•
3-MHz Sample Rate Serial Device  
12-Bit Resolution  
Zero Latency  
48-MHz Serial Interface  
Supply Range: 2.7 V to 5.5 V  
Low Power Dissipation:  
•
•
•
•
•
–
–
6.45 mW at 3-V VDD, 2 MSPS  
13.5 mw at 5-V VDD, 3 MSPS  
•
•
•
•
•
•
±0.6 LSB INL, ±0.5 LSB DNL  
72 dB SINAD, –84 dB THD  
Unipolar Input Range: 0 V to VDD  
Power-Down Current: 1 µA  
Wide Input Bandwidth: 30 MHz at 3 dB  
6-Pin SOT23 Package  
DESCRIPTION  
The ADS7883 is a 12-bit, 3-MSPS analog-to-digital converter (ADC). The device includes a capacitor based SAR  
A/D converter with inherent sample and hold. The serial interface in the device is controlled by the CS and SCLK  
signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling  
edge of CS, and SCLK is used for conversion and serial data output.  
The device operates from a wide supply range from 2.7 V to 5.5 V. The low power consumption of the device  
makes it suitable for battery-powered applications. The device also includes a power saving power-down feature  
for when the device is operated at lower conversion speeds.  
The high level of the digital input to the device is not limited to device VDD. Therefore the digital input can go as  
high as 5.5 V when the device supply is 2.7 V. This feature is useful when digital signals are received from  
another circuit with different supply levels. This also reduces restrictions on power-up sequencing.  
The ADS7883 is available in a 6-pin SOT23 package and is specified for operation from –40°C to 125°C.  
MicroPower Miniature SAR Converter Family  
BIT  
< 300 KSPS  
300 KSPS – 1.25 MSPS  
3 MSPS  
3 MSPS for 4.5 VDD to 5.5 VDD  
2 MSPS for 2.7 VDD to 4.5 VDD  
12-Bit  
ADS7866 (1.2 VDD to 3.6 VDD  
)
ADS7886 (2.35 VDD to 5.25 VDD  
)
ADS7883  
10-Bit  
8-Bit  
ADS7867 (1.2 VDD to 3.6 VDD  
)
)
ADS7887 (2.35 VDD to 5.25 VDD  
)
)
ADS7884 (2.7 VDD to 5.5 VDD  
)
)
ADS7868 (1.2 VDD to 3.6 VDD  
ADS7888 (2.35 VDD to 5.25 VDD  
ADS7885 (2.7 VDD to 5.5 VDD  
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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