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參數(shù)資料
| 型號： | AD9742 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 12-Bit, 165 MSPS TxDAC D/A Converter |
| 中文描述： | 12位，165 MSPS的TxDAC系列D / A轉(zhuǎn)換 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 783K |
| 代理商： | AD9742 |
REV. 0
–3–
AD9742
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
–151
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
74
84
85
82
76
85
83
80
75
74
72
60
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
80
dBc
dBc
dBc
dBc
90
90
90
–82
–77
–77
–77
–74
dBc
dBc
dBc
dBc
78
86
73
78
69
71
dB
dB
dB
dB
dB
dB
65
67
65
63
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.
DYNAMIC SPECIFICATIONS
(T
MIN
to T
MAX
, AVDD = 3.3 V, DVDD = 3.3 V, I
OUTFS
= 20 mA, Differential Transformer Coupled
Output, 50 Doubly Terminated, unless otherwise noted.)
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