ADS822E.B中文资料德州仪器数据手册PDF规格书

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.