Datasheet

AD9726
Rev. B | Page 4 of 24
AC SPECIFICATIONS
DBVDD = AVDD1 = AVDD2 = 3.3 V, DVDD = CLKVDD = ADVDD = ACVDD = 2.5 V, I
OUT-FS
= 20 mA, internal reference,
T
MIN
to T
MAX
, unless otherwise specified.
Table 2.
Parameter Min Typ Max Unit
DYNAMIC PERFORMANCE
Output Settling Time (t
ST
) to 0.1% 10.5 ns
Output Rise Time (10% to 90%) 500 ns
Output Fall Time (90% to 10%) 500 ns
Output Noise (I
OUTFS
= 20 mA) 45 pA/√Hz
TOTAL HARMONIC DISTORTION (THD)
f
DAC
= 400 MHz, f
OUT
= 1 MHz, 0 dBFS −95 dB
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
DAC
= 400 MHz, 0 dBFS
f
OUT
= 20 MHz 78 dBc
f
OUT
= 70 MHz 68 dBc
f
OUT
= 140 MHz 62 dBc
f
DAC
= 400 MHz, –3 dBFS
f
OUT
= 20 MHz 80 dBc
f
OUT
= 70 MHz 70 dBc
f
OUT
= 140 MHz 62 dBc
f
DAC
= 200 MHz, 0 dBFS
f
OUT
= 20 MHz 84 dBc
f
OUT
= 70 MHz 62 dBc
f
DAC
= 200 MHz, –3 dBFS
f
OUT
= 20 MHz 82 dBc
f
OUT
= 70 MHz 68 dBc
TWO-TONE INTERMODULATION DISTORTION (IMD)
f
DAC
= 400 MHz, 0 dBFS
f
OUT1
= 20 MHz, f
OUT2
= 21 MHz 86 dBc
f
OUT1
= 70 MHz, f
OUT2
= 71 MHz 82 dBc
f
OUT1
= 140 MHz, f
OUT2
= 141 MHz 74 dBc
ADJACENT CHANNEL LEAKAGE RATIO (ACLR)
f
DATA
= 245.76 MSPS, f
CARRIER
= 70 MHz, One-Carrier WCDMA 76 dBc
f
DATA
= 245.76 MSPS, f
CARRIER
= 70 MHz, Two-Carrier WCDMA 70 dBc
f
DATA
= 245.76 MSPS, f
CARRIER1
= 70 MHz, Four-Carrier WCDMA 66 dBc
f
DATA
= 245.76 MSPS, f
CARRIER1
= 70 MHz, Eight-Carrier WCDMA 62 dBc
NOISE SPECTRAL DENSITY (NSD)
f
DAC
= 400 MHz, f
OUT
= 70 MHz, 0 dBFS −160 dBm/Hz
f
DAC
= 400 MHz, f
OUT
= 70 MHz, –3 dBFS −163 dBm/Hz
f
DAC
= 400 MHz, f
OUT
= 70 MHz, –6 dBFS −165 dBm/Hz
UPDATE RATE 0 400 MSPS