ADS822E屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由美國德州儀器公司制造生產(chǎn)的ADS822E模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對模擬信號進行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號。一般來說，數(shù)字輸出是二進制補碼二進制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進行選擇。

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

SSOP-28 PACKAGE

APPLICATIONS

MEDICAL IMAGING

TEST EQUIPMENT

COMPUTER SCANNERS

COMMUNICATIONS

VIDEO DIGITIZING

DESCRIPTION

The ADS822 and ADS825 are pipeline, CMOS Analog-to-Digital

Converters (ADC) 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

multichannel applications, or in applications where full-scale range

adjustment is required.

The ADS822 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 ADS822 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 40MSPS and a single-ended input range of 1.5V to 3.5V.

The ADS822 and ADS825 are available in an SSOP-28 package and

are pin-for-pin compatible with the 10-bit, 60MSPS ADS823 and

ADS826, and the 10-bit, 75MSPS ADS828, providing an upgrade

path to higher sampling frequencies.