ADS822E Datasheet

Data Acquisition - Analog to Digital Converters (ADC)


The ADS822E and ADS825 are pipeline, CMOS analog-to-digital converters that operate from a single +5V power supply. These converters provide excellent performance with a single-ended input and can be operated with a differential input for added spurious performance. These high-performance converters include a 10-bit quantizer, high-bandwidth track-and-hold, and a high-accuracy internal reference. They also allow for the user to disable the internal reference and utilize external references. This external reference option provides excellent gain and offset matching when used in multi-channel applications or in applications where full-scale range adjustment is required.The ADS822E and ADS825 employ digital error correction techniques to provide excellent differential linearity for demanding imaging applications. Its low distortion and high SNR give the extra margin needed for medical imaging, communications,video, and test instrumentation. The ADS822E and ADS825 offer power dissipation of 190mW and also provide a power-down mode, thus reducing power dissipation to only 20mW. The ADS825 is +3V or +5V Logic I/O compatible.The ADS822 and ADS825 are specified at a maximum sampling frequency of 40MHz and a single-ended input range of 1.5V to 3.5V. The ADS822E and ADS825 are available in a 28-lead SSOP package and are pin-for-pin compatible with the 10-bit, 60MHz ADS823 and ADS826, and the 10-bit, 70MHz ADS824, providing an upgrade path to higher sampling frequencies. ADS822E Features • HIGH SNR: 60dB• HIGH SFDR: 72dBFS• LOW POWER: 190mW• INTERNAL/EXTERNAL REFERENCE OPTION• SINGLE-ENDED OR FULLY DIFFERENTIAL ANALOG INPUT• PROGRAMMABLE INPUT RANGE• LOW DNL: 0.5LSB• SINGLE +5V SUPPLY OPERATION• +3V OR +5V LOGIC I/O COMPATIBLE (ADS825)• POWER DOWN: 20mW• 28-LEAD SSOP PACKAGE ADS822E Applications • MEDICAL IMAGING• TEST EQUIPMENT• COMPUTER SCANNERS• COMMUNICATIONS• VIDEO DIGITIZING


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