AD9707 Analog Devices, AD9707 Datasheet - Page 37

• Manufacturer Part Number: AD9707
• Manufacturer: Analog Devices

Specifications of AD9707

• Resolution (bits): 14bit
• Dac Update Rate: 175MSPS
• Dac Settling Time: 11ns
• Max Pos Supply (v): +3.6V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

Data Sheet
POWER DISSIPATION
The power dissipation, P
AD9707
•
•
•
•
Power dissipation is directly proportional to the analog supply
current, I
a fixed current plus I
to f
Figure 82 shows I
ratios (f
I
clock operation than for single-ended operation, as shown in
Figure 84. This difference in clock current is due primarily to the
differential clock receiver, which is disabled in single-ended
clock mode.
CLKVDD
CLOCK
The power supply voltages (AVDD, CLKVDD, and DVDD)
The full-scale current output, I
The update rate, f
The reconstructed digital input waveform
is directly proportional to f
OUT
6
5
4
3
2
1
0
and increases with increasing analog output frequencies.
10
1.00
is dependent on several factors that include
AVDD
9
8
7
6
5
4
3
2
1
0
1
/f
CLOCK
, and the digital supply current, I
Figure 80. I
Figure 81. I
DVDD
) for various update rates with DVDD = 3.3 V.
OUTFS
1.25
as a function of full-scale sine wave output
2
CLOCK
, as shown in Figure 80. I
AVDD
AVDD
D
, of the AD9704/AD9705/AD9706/
vs. I
vs. I
I
OUTFS
I
OUTFS
OUTFS
OUTFS
1.50
CLOCK
3
(mA)
at AVDD = 3.3 V
at AVDD = 1.8 V
(mA)
OUTFS
and is higher for differential
DVDD
1.75
4
DVDD
. I
AVDD
is proportional
is equal to
2.00
5
Rev. B | Page 37 of 44
2.5
2.5
2.0
1.5
1.0
0.5
10
9
8
7
6
5
4
3
2
1
0
0
0.01
0.01
5
4
3
2
1
0
0
Figure 82. I
Figure 83. I
AD9704/AD9705/AD9706/AD9707
Figure 84. I
DVDD
DVDD
50
CLKVDD
vs. f
vs. f
OUT
OUT
vs. f
f
f
f
f
f
f
f
f
CLOCK
CLOCK
CLOCK
OUT
/f
OUT
/f
CLOCK
CLOCK
CLOCK
CLOCK
CLOCK
CLOCK
f
f
f
f
CLOCK
CLOCK
CLOCK
CLOCK
/
/f
0.1
0.1
100
f
CLOCK
CLOCK
(MSPS)
= 175MSPS
= 125MSPS
Ratio at DVDD = 3.3 V
Ratio at DVDD = 1.8 V
= 75MSPS
= 25MSPS
= 10MSPS
at CLKVDD = 3.3 V
= 80MSPS
= 50MSPS
= 25MSPS
= 10MSPS
DIFF
SE
150
200
1
1