AD9772A
DYNAMIC SPECIFICATIONS
Parameter
DYNAMIC PERFORMANCE
Maximum DAC Output Update Rate (f
DAC
)
Output Settling Time (t
ST
) (to 0.025%)
Output Propagation Delay
1
(t
PD
)
Output Rise Time (10% to 90%)
2
Output Fall Time (10% to 90%)
2
Output Noise (I
OUTFS
= 20 mA)
AC LINEARITY—BASEBAND MODE
Spurious-Free Dynamic Range (SFDR) to Nyquist (f
OUT
= 0 dBFS)
f
DATA
= 65 MSPS; f
OUT
= 1.01 MHz
f
DATA
= 65 MSPS; f
OUT
= 10.01 MHz
f
DATA
= 65 MSPS; f
OUT
= 25.01 MHz
f
DATA
= 160 MSPS; f
OUT
= 5.02 MHz
f
DATA
= 160 MSPS; f
OUT
= 20.02 MHz
f
DATA
= 160 MSPS; f
OUT
= 50.02 MHz
Two-Tone Intermodulation (IMD) to Nyquist (f
OUT1
= f
OUT2
= –6 dBFS)
f
DATA
= 65 MSPS; f
OUT1
= 5.01 MHz; f
OUT2
= 6.01 MHz
f
DATA
= 65 MSPS; f
OUT1
= 15.01 MHz; f
OUT2
= 17.51 MHz
f
DATA
= 65 MSPS; f
OUT1
= 24.1 MHz; f
OUT2
= 26.2 MHz
f
DATA
= 160 MSPS; f
OUT1
= 10.02 MHz; f
OUT2
= 12.02 MHz
f
DATA
= 160 MSPS; f
OUT1
= 30.02 MHz; f
OUT2
= 35.02 MHz
f
DATA
= 160 MSPS; f
OUT1
= 48.2 MHz; f
OUT2
= 52.4 MHz
Total Harmonic Distortion (THD)
f
DATA
= 65 MSPS; f
OUT
= 1.0 MHz; 0 dBFS
f
DATA
= 78 MSPS; f
OUT
= 10.01 MHz; 0 dBFS
Signal-to-Noise Ratio (SNR)
f
DATA
= 65 MSPS; f
OUT
= 16.26 MHz; 0 dBFS
f
DATA
= 100 MSPS; f
OUT
= 25.1 MHz; 0 dBFS
Adjacent Channel Power Ratio (ACPR)
WCDMA with 4.1 MHz BW, 5 MHz Channel Spacing
IF = 16 MHz, f
DATA
= 65.536 MSPS
IF = 32 MHz, f
DATA
= 131.072 MSPS
Four-Tone Intermodulation
15.6 MHz, 15.8 MHz, 16.2 MHz and 16.4 MHz at –12 dBFS
f
DATA
= 65 MSPS, Missing Center
AC LINEARITY—IF MODE
Four-Tone Intermodulation at IF = 70 MHz
68.1 MHz, 69.3 MHz, 71.2 MHz and 72.0 MHz at –20 dBFS
f
DATA
= 52 MSPS, f
DAC
= 208 MHz
NOTES
1
Propagation delay is delay from CLK input to DAC update.
2
Measured single-ended into 50
Ω
load.
Specifications subject to change without notice.
(T
MIN
to T
MAX
, AVDD = 3.3 V, CLKVDD = 3.3 V, DVDD = 3.3 V, PLLVDD = 3.3 V, I
OUTFS
= 20 mA,
differential transformer coupled output, 50 doubly terminated, unless otherwise noted.)
Min
400
11
17
0.8
0.8
50
Typ
Max
Unit
MSPS
ns
ns
ns
ns
pA√Hz
82
75
73
82
75
65
85
75
68
85
70
65
–80
–74
71
71
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dB
dB
dB
dB
78
68
88
dBc
dBc
dBFS
77
dBFS
REV. A
–3–
AD [ ANALOG DEVICES ]
