ADS822 datasheet(6/19 Pages) TI1

6 / 19 page

ADS822, ADS825

SBAS069B

UNDERSAMPLING

(Differential Input, 2Vp-p)

Frequency (MHz)

–20

–40

–60

–80

–100

S = 40MHz

IN = 75MHz

SNR = 59dBFS

SFDR = 66dBFS

2-TONE INTERMODULATION DISTORTION

Frequency (MHz)

–20

–40

–60

–80

–100

1 = 9.5MHz at –7dBFS

2 = 9.9MHz at –7dBFS

IMD (3) = –67dB

ELECTRICAL CHARACTERISTICS (Cont.)

At TA = full specified temperature range, VS = +5V, single-ended input range = 1.5V to 3.5V, sampling rate = 40MHz, and external reference, unless otherwise noted.

SWEPT POWER SFDR

Input Amplitude (dBFS)

100

–60

–50

–40

–30

–10

–20

dBc

dBFS

DIFFERENTIAL LINEARITY ERROR

Output Code

1.0

0.5

–0.5

–1.0

128

256

512

768

1024

IN = 1MHz

DIFFERENTIAL LINEARITY ERROR

Output Code

1.0

0.5

–0.5

–1.0

128

256

512

768

1024

IN = 10MHz

INTEGRAL LINEARITY ERROR

Output Code

2.0

1.0

–1.0

–2.0

256

512

768

1024

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