AD9852ASQ Analog Devices Inc, AD9852ASQ Datasheet - Page 15

• Manufacturer Part Number: AD9852ASQ
• Manufacturer: Analog Devices Inc

Specifications of AD9852ASQ

• Lead Free Status / RoHS Status: Not Compliant

Figure 18 and Figure 19 shows the narrow-band performance of the AD9852 when operating with a 30 MHz reference clock with the
REFCLK multiplier enabled at 10× vs. a 300 MHz reference clock with the REFCLK multiplier bypassed.
Figure 16. A Slight Change in Tuning Word Yields Dramatically Better Results;
Figure 17. Narrow-band SFDR, 39.1 MHz, 50 kHz BW, 200 MHz REFCLK
112.469 MHz with All Spurs Shifted Out-of-Band, RECLK is 300 MHz
–100
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
0
0
CENTER 112.469MHz
CENTER 39.1MHz
10
Figure 18. Residual Phase Noise, 300 MHz REFCLK
A
100
with REFCLK Multiplier Bypassed
with REFCLK Multiplier Bypassed
OUT
= 5MHz
FREQUENCY (Hz)
1k
50kHz/
5kHz/
A
OUT
= 80MHz
10k
SPAN 500kHz
100k
SPAN 50kHz
1M
Rev. D | Page 15 of 52
Figure 21. Supply Current vs. Output Frequency; Variation Is Minimal,
Expressed as a Percentage, and Heavily Dependent on Tuning Word
–100
–120
–130
–140
–150
–160
–110
620
615
610
605
600
595
590
–90
55
54
53
52
51
50
49
48
Figure 20. SFDR vs. DAC Current, 59.1 A
0
0
10
Figure 19. Residual Phase Noise, 30 MHz REFCLK
A
OUT
20
= 5MHz
5
100
with REFCLK Multiplier Bypassed
with REFCLK Multiplier = 10×
40
A
DAC CURRENT (mA)
FREQUENCY (MHz)
OUT
FREQUENCY (Hz)
10
1k
60
= 80MHz
80
15
10k
OUT
100
, 300 MHz REFCLK
20
100k
120
AD9852
140
25
1M