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AD9747-EBZ датащи(PDF) 26 Page - Analog Devices

номер детали AD9747-EBZ
подробное описание детали  Dual 8-/10-/12-/14-/16-Bit 250 MSPS Digital-to-Analog Converters
PDF  28 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD9747-EBZ датащи(HTML) 26 Page - Analog Devices

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AD9741/AD9743/AD9745/AD9746/AD9747
Rev. 0 | Page 26 of 28
30
24
18
12
6
0
0
50
100
150
200
250
fDAC (MHz)
25
75
125
175
225
AD9747
AD9741
Figure 43 shows the power consumption for each power supply
domain as well as the total power consumption. Individual bars
within each group display the power in full active mode (blue)
vs. power for five increasing levels of power-down.
0
50
100
150
200
250
300
350
AVDD33
DVDD18
CVDD18
DVDD33
TOT PWR
FULL ACTIVE
DCO OFF
AUX OFF
DAC OFF
CLK OFF
BIAS OFF
Figure 41. DVDD18 Current vs. fDAC
15
13
11
9
7
5
0
50
100
150
200
250
fDAC (MHz)
25
75
125
175
225
Figure 43. Power Dissipation vs. Power-Down Mode
The overall power consumption is dominated by AVDD33 and
significant power savings can be achieved simply by disabling
the DAC outputs. Also, disabling the DAC outputs is a signifi-
cant way to conserve power and still maintain a fast wake-up
time. Full power-down disables all circuitry for minimum
power consumption. Note, however, that even in full power-
down, there is a small power draw (25 mW) due to incoming
data activity. To lower power consumption to near zero, all
incoming data activity must be halted.
Figure 42. CVDD18 Current vs. fDAC



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