Datasheet

AD9776A/AD9778A/AD9779A
Rev. B | Page 8 of 56
AC SPECIFICATIONS
T
MIN
to T
MAX
, AVDD33 = 3.3 V, DVDD33 = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V, I
OUTFs
= 20 mA, maximum sample rate, unless
otherwise noted.
Table 4.
AD9776A AD9778A AD9779A
Parameter Min Typ Max Min Typ Max Min Typ Max Unit
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
DAC
= 100 MSPS, f
OUT
= 20 MHz 82 82 82 dBc
f
DAC
= 200 MSPS, f
OUT
= 50 MHz 81 81 82 dBc
f
DAC
= 400 MSPS, f
OUT
= 70 MHz 80 80 80 dBc
f
DAC
= 800 MSPS, f
OUT
= 70 MHz 85 85 87 dBc
TWO-TONE INTERMODULATION DISTORTION (IMD)
f
DAC
= 200 MSPS, f
OUT
= 50 MHz 87 87 91 dBc
f
DAC
= 400 MSPS, f
OUT
= 60 MHz 80 85 85 dBc
f
DAC
= 400 MSPS, f
OUT
= 80 MHz 75 81 81 dBc
f
DAC
= 800 MSPS, f
OUT
= 100 MHz 75 80 81 dBc
NOISE SPECTRAL DENSITY (NSD), EIGHT-TONE, 500 kHz
TONE SPACING
f
DAC
= 200 MSPS, f
OUT
= 80 MHz −152 −155 −158 dBm/Hz
f
DAC
= 400 MSPS, f
OUT
= 80 MHz −155 −159 −160 dBm/Hz
f
DAC
= 800 MSPS, f
OUT
= 80 MHz −157.5 −160 −161 dBm/Hz
W-CDMA ADJACENT CHANNEL LEAKAGE RATIO (ACLR),
SINGLE CARRIER
f
DAC
= 491.52 MSPS, f
OUT
= 100 MHz 76 78 79 dBc
f
DAC
= 491.52 MSPS, f
OUT
= 200 MHz 69 73 74 dBc
W-CDMA SECOND ADJACENT CHANNEL LEAKAGE RATIO
(ACLR), SINGLE CARRIER
f
DAC
= 491.52 MSPS, f
OUT
= 100 MHz 77.5 80 81 dBc
f
DAC
= 491.52 MSPS, f
OUT
= 200 MHz 76 78 78 dBc