AD9726 datasheet(4/24 Pages) AD

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AD9726

Rev. A | Page 4 of 24

AC SPECIFICATIONS

DBVDD = AVDD1 = AVDD2 = 3.3 V, DVDD = CLKVDD = ADVDD = ACVDD = 2.5 V, IOUT-FS = 20 mA, internal reference,

TMIN to TMAX, unless otherwise specified.

Table 2.

Parameter

Min

Typ

Max

Unit

TOTAL HARMONIC DISTORTION (THD)

fDAC = 400 MHz, fOUT = 1 MHz, 0 dBFS

–95

SPURIOUS-FREE DYNAMIC RANGE (SFDR)

fDAC = 400 MHz, 0 dBFS

fOUT = 20 MHz

dBc

fOUT = 70 MHz

dBc

fOUT = 140 MHz

dBc

fDAC = 400 MHz, –3 dBFS

fOUT = 20 MHz

dBc

fOUT = 70 MHz

dBc

fOUT = 140 MHz

dBc

fDAC = 200 MHz, 0 dBFS

fOUT = 20 MHz

dBc

fOUT = 70 MHz

dBc

fDAC = 200 MHz, –3 dBFS

fOUT = 20 MHz

dBc

fOUT = 70 MHz

dBc

TWO-TONE INTERMODULATION DISTORTION (IMD)

fDAC = 400 MHz, 0 dBFS

fOUT1 = 20 MHz, fOUT2 = 21 MHz

dBc

fOUT1 = 70 MHz, fOUT2 = 71 MHz

dBc

fOUT1 = 140 MHz, fOUT2 = 141 MHz

dBc

ADJACENT CHANNEL LEAKAGE RATIO (ACLR)

fDATA = 245.76 MSPS, fCARRIER = 70 MHz, 1-Carrier WCDMA

dBc

fDATA = 245.76 MSPS, fCARRIER = 70 MHz, 2-Carrier WCDMA

dBc

fDATA = 245.76 MSPS, fCARRIER1 = 70 MHz, 4-Carrier WCDMA

dBc

fDATA = 245.76 MSPS, fCARRIER1 = 70 MHz, 8-Carrier WCDMA

dBc

NOISE SPECTRAL DENSITY (NSD)

fDAC = 400 MHz, fOUT = 70 MHz, 0 dBFS

–160

dBm/Hz

fDAC = 400 MHz, fOUT = 70 MHz, –3 dBFS

–163

dBm/Hz

fDAC = 400 MHz, fOUT = 70 MHz, –6 dBFS

–165

dBm/Hz

UPDATE RATE

400

MSPS

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