AD9481 datasheet(6/29 Pages) AD

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AD9481

Rev. 0 | Page 5 of 28

AC SPECIFICATIONS

AVDD = 3.3 V, DRVDD = 3.3 V; TMIN = −40°C, TMAX = +85°C, AIN = −1 dBFS, full scale = 1.0 V, internal reference, differential analog and

clock inputs, unless otherwise noted.

Table 3.

AD9481-250

Parameter

Temp

Test Level

Min

Typ

Max

Unit

SIGNAL-TO-NOISE RATIO (SNR)

fIN = 19.7 MHz

25°C

fIN = 70.1 MHz

25°C

44.5

45.7

SIGNAL-TO-NOISE AND DISTORTION (SINAD)

fIN = 19.7 MHz

25°C

45.9

fIN = 70.1 MHz

25°C

44.4

45.7

EFFECTIVE NUMBER OF BITS (ENOB)

fIN = 19.7 MHz

25°C

7.5

Bits

fIN = 70.1 MHz

25°C

7.2

7.5

Bits

WORST SECOND OR THIRD HARMONIC DISTORTION

fIN = 19.7 MHz

25°C

−64.8

dBc

fIN = 70.1 MHz

25°C

−64.8

−54

dBc

WORST OTHER

fIN = 19.7 MHz

25°C

−68

dBc

fIN = 70.1 MHz

25°C

−65.8

−56

dBc

SPURIOUS-FREE DYNAMIC RANGE (SFDR)1

fIN = 19.7 MHz

25°C

−64.8

dBc

fIN = 70.1 MHz

25°C

−64.8

−54

dBc

TWO-TONE INTERMODULATION DISTORTION (IMD)

fIN1 = 69.3 MHz, fIN2 = 70.3 MHz

25°C

−64.9

dBc

1 DC and Nyquist bin energy ignored.

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