AD9775EB datasheet(4/48 Pages) AD

4 / 48 page

REV. 0

–4–

AD9775

DYNAMIC SPECIFICATIONS

(TMIN to TMAX, AVDD = 3.3 V, CLKVDD = 3.3 V, DVDD = 3.3 V, PLLVDD = 0 V, IOUTFS = 20 mA,

Interpolation = 2 , Differential Transformer Coupled Output, 50

Doubly Terminated,

unless otherwise noted.)

Parameter

Min

Typ

Max

Unit

DYNAMIC PERFORMANCE

Maximum DAC Output Update Rate (fDAC)

400

MSPS

Output Settling Time (tST) (to 0.025%)

Output Rise Time (10% to 90%)

0.8

Output Fall Time (10% to 90%)

0.8

Output Noise (IOUTFS = 20 mA)

√Hz

AC LINEARITY—–BASEBAND MODE

Spurious-Free Dynamic Range (SFDR) to Nyquist (fOUT = 0 dBFS)

fDATA = 100 MSPS, fOUT = 1 MHz

84.5

dBc

fDATA = 65 MSPS, fOUT = 1 MHz

dBc

fDATA = 65 MSPS, fOUT = 15 MHz

dBc

fDATA = 78 MSPS, fOUT = 1 MHz

dBc

fDATA = 78 MSPS, fOUT = 15 MHz

dBc

fDATA = 160 MSPS, fOUT = 1 MHz

dBc

fDATA = 160 MSPS, fOUT = 15 MHz

dBc

Spurious-Free Dynamic Range within a 1 MHz Window

(fOUT = 0 dBFS, fDATA = 100 MSPS, fOUT = 1 MHz)

91.3

dBc

Two-Tone Intermodulation (IMD) to Nyquist (fOUT1 = fOUT2 = –6 dBFS)

fDATA = 65 MSPS, fOUT1 = 10 MHz; fOUT2 = 11 MHz

dBc

fDATA = 65 MSPS, fOUT1 = 20 MHz; fOUT2 = 21 MHz

dBc

fDATA = 78 MSPS, fOUT1 = 10 MHz; fOUT2 = 11 MHz

dBc

fDATA = 78 MSPS, fOUT1 = 20 MHz; fOUT2 = 21 MHz

dBc

fDATA = 160 MSPS, fOUT1 = 10 MHz; fOUT2 = 11 MHz

dBc

fDATA = 160 MSPS, fOUT1 = 20 MHz; fOUT2 = 21 MHz

dBc

Total Harmonic Distortion (THD)

fDATA = 100 MSPS, fOUT = 1 MHz; 0 dBFS

–71

–82.5

Signal-to-Noise Ratio (SNR)

fDATA = 78 MSPS, fOUT = 5 MHz; 0 dBFS

fDATA = 160 MSPS, fOUT = 5 MHz; 0 dBFS

Adjacent Channel Power Ratio (ACLR)

WCDMA with 3.84 MHz BW, 5 MHz Channel Spacing

IF = Baseband, fDATA = 76.8 MSPS

dBc

IF = 19.2 MHz, fDATA = 76.8 MSPS

dBc

Four-Tone Intermodulation

21 MHz, 22 MHz, 23 MHz, and 24 MHz at –12 dBFS

dBFS

(fDATA = MSPS, Missing Center)

AC LINEARITY—IF MODE

Four-Tone Intermodulation at IF = 200 MHz

MHz, MHz, MHz, and MHz at dBFS

dBFS

(fDATA = MSPS, fDAC = MHz)

*Measured single-ended into 50

Ω load.

Specifications subject to change without notice.

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