參數(shù)資料
型號(hào)： AD9744AR
廠(chǎng)商： ANALOG DEVICES INC
元件分類(lèi)： DAC
英文描述： 14-Bit, 165 MSPS TxDAC D/A Converter
中文描述： PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PDSO28
封裝： 0.300 INCH, MS-013AE, SOIC-28
文件頁(yè)數(shù)： 3/28頁(yè)
文件大小： 1142K
代理商： AD9744AR
REV. A
AD9744
–3–
DYNAMIC SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
Maximum Output Update Rate (f
CL1
)
Output Settling Time (t
ST
) (to 0.1%)
Output Propagation Delay (t
PD
)
Glitch Impulse
Output Rise Time (10% to 90%)
1
Output Fall Time (10% to 90%)
1
Output Noise (I
OUTFS
= 20 mA)
2
Output Noise (I
OUTFS
= 2 mA)
2
Noise Spectral Density
3
165
MSPS
ns
ns
pV-s
ns
ns
pA/
÷
Hz
pA/
÷
Hz
dBm/Hz
11
1
5
2.5
2.5
50
30
–155
AC LINEARITY
Spurious-Free Dynamic Range to Nyquist
f
CLOCK
= 25 MSPS; f
OUT
= 1.00 MHz
0 dBFS Output
–6 dBFS Output
–12 dBFS Output
–18 dBFS Output
f
CLOCK
= 65 MSPS; f
OUT
= 1.00 MHz
f
CLOCK
= 65 MSPS; f
OUT
= 2.51 MHz
f
CLOCK
= 65 MSPS; f
OUT
= 10 MHz
f
CLOCK
= 65 MSPS; f
OUT
= 15 MHz
f
CLOCK
= 65 MSPS; f
OUT
= 25 MHz
f
CLOCK
= 165 MSPS; f
OUT
= 21 MHz
f
CLOCK
= 165 MSPS; f
OUT
= 41 MHz
Spurious-Free Dynamic Range within a Window
f
CLOCK
= 25 MSPS; f
OUT
= 1.00 MHz; 2 MHz Span
f
CLOCK
= 50 MSPS; f
OUT
= 5.02 MHz; 2 MHz Span
f
CLOCK
= 65 MSPS; f
OUT
= 5.03 MHz; 2.5 MHz Span
f
CLOCK
= 125 MSPS; f
OUT
= 5.04 MHz; 4 MHz Span
Total Harmonic Distortion
f
CLOCK
= 25 MSPS; f
OUT
= 1.00 MHz
f
CLOCK
= 50 MSPS; f
OUT
= 2.00 MHz
f
CLOCK
= 65 MSPS; f
OUT
= 2.00 MHz
f
CLOCK
= 125 MSPS; f
OUT
= 2.00 MHz
Signal-to-Noise Ratio
f
CLOCK
= 65 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA
f
CLOCK
= 65 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA
f
CLOCK
= 125 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA
f
CLOCK
= 125 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA
f
CLOCK
= 165 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA
f
CLOCK
= 165 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA
Multitone Power Ratio (8 Tones at 400 kHz Spacing)
f
CLOCK
= 78 MSPS; f
OUT
= 15.0 MHz to 18.2 MHz
0 dBFS Output
–6 dBFS Output
–12 dBFS Output
–18 dBFS Output
77
90
87
82
82
85
84
80
75
74
73
60
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
84
90
90
87
87
dBc
dBc
dBc
dBc
–86
–77
–77
–77
–77
dBc
dBc
dBc
dBc
82
88
77
78
70
70
dB
dB
dB
dB
dB
dB
66
68
62
61
dBc
dBc
dBc
dBc
NOTES
1
Measured single-ended into 50
W
load.
2
Output noise is measured with a full-scale output set to 20 mA with no conversion activity. It is a measure of the thermal noise only.
3
Noise spectral density is the average noise power normalized to a 1 Hz bandwidth, with the DAC converting and producing an output tone.
Specifications subject to change without notice.
(T
MIN
to T
MAX
, AVDD = 3.3 V, DVDD = 3.3 V, CLKVDD = 3.3 V, I
OUTFS
= 20 mA, differential
transformer coupled output, 50 doubly terminated, unless otherwise noted.)
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