Datasheet

AD9775
Rev. E | Page 6 of 56
DYNAMIC SPECIFICATIONS
T
MIN
to T
MAX
, AVDD = 3.3 V, CLKVDD = 3.3 V, DVDD = 3.3 V, PLLVDD = 0 V, I
OUTFS
= 20 mA, interpolation = 2×, differential
transformer-coupled output, 50 Ω doubly terminated, unless otherwise noted.
Table 2.
Parameter Min Typ Max Unit
DYNAMIC PERFORMANCE
Maximum DAC Output Update Rate (f
DAC
) 400 MSPS
Output Settling Time (t
ST
) to 0.025% 11 ns
Output Rise Time 10% to 90%
1
0.8 ns
Output Fall Time 10% to 90%
1
0.8 ns
Output Noise, I
OUTFS
= 20 mA 50 pA/√Hz
AC LINEARITY—BASEBAND MODE
Spurious-Free Dynamic Range (SFDR) to Nyquist (f
OUT
= 0 dBFS)
f
DATA
= 100 MSPS, f
OUT
= 1 MHz 71 84.5 dBc
f
DATA
= 65 MSPS, f
OUT
= 1 MHz 84 dBc
f
DATA
= 65 MSPS, f
OUT
= 15 MHz 80 dBc
f
DATA
= 78 MSPS, f
OUT
= 1 MHz 84 dBc
f
DATA
= 78 MSPS, f
OUT
= 15 MHz 80 dBc
f
DATA
= 160 MSPS, f
OUT
= 1 MHz 82 dBc
f
DATA
= 160 MSPS, f
OUT
= 15 MHz 80 dBc
Spurious-Free Dynamic Range Within a 1 MHz Window
f
OUT
= 0 dBFS, f
DATA
= 100 MSPS, f
OUT
= 1 MHz 73 91.3 dBc
Two-Tone Intermodulation (IMD) to Nyquist (f
OUT1
= f
OUT2
= −6 dBFS)
f
DATA
= 65 MSPS, f
OUT1
= 10 MHz; f
OUT2
= 11 MHz 81 dBc
f
DATA
= 65 MSPS, f
OUT1
= 20 MHz; f
OUT2
= 21 MHz 76 dBc
f
DATA
= 78 MSPS, f
OUT1
= 10 MHz; f
OUT2
= 11 MHz 81 dBc
f
DATA
= 78 MSPS, f
OUT1
= 20 MHz; f
OUT2
= 21 MHz 76 dBc
f
DATA
= 160 MSPS, f
OUT1
= 10 MHz; f
OUT2
= 11 MHz 81 dBc
f
DATA
= 160 MSPS, f
OUT1
= 20 MHz; f
OUT2
= 21 MHz 76 dBc
Total Harmonic Distortion (THD)
f
DATA
= 100 MSPS, f
OUT
= 1 MHz; 0 dBFS −71 −82.5 dB
Signal-to-Noise Ratio (SNR)
f
DATA
= 78 MSPS, f
OUT
= 5 MHz; 0 dBFS 76 dB
f
DATA
= 160 MSPS, f
OUT
= 5 MHz; 0 dBFS 74 dB
Adjacent Channel Power Ratio (ACPR)
W-CDMA with 3.84 MHz BW, 5 MHz Channel Spacing
IF = Baseband, f
DATA
= 76.8 MSPS 71 dBc
IF = 19.2 MHz, f
DATA
= 76.8 MSPS 71 dBc
Four-Tone Intermodulation
21 MHz, 22 MHz, 23 MHz, and 24 MHz at −12 dBFS (f
DATA
= MSPS, Missing Center) 75 dBFS
AC LINEARITY—IF MODE
Four-Tone Intermodulation at IF = 200 MHz
201 MHz, 202 MHz, 203 MHz, and 204 MHz at −12 dBFS (f
DATA
= 160 MSPS, f
DAC
= 320 MHz) 72 dBFS
1
Measured single-ended into 50 Ω load.