参数资料
型号: AD9854/PCBZ
厂商: Analog Devices Inc
文件页数: 6/52页
文件大小: 0K
描述: BOARD EVAL FOR AD9854
产品培训模块: Direct Digital Synthesis Tutorial Series (1 of 7): Introduction
Direct Digital Synthesizer Tutorial Series (7 of 7): DDS in Action
Direct Digital Synthesis Tutorial Series (3 of 7): Angle to Amplitude Converter
Direct Digital Synthesis Tutorial Series (6 of 7): SINC Envelope Correction
Direct Digital Synthesis Tutorial Series (4 of 7): Digital-to-Analog Converter
Direct Digital Synthesis Tutorial Series (2 of 7): The Accumulator
设计资源: AD9854 Eval Brd Schematic
AD9854 Eval Brd BOM
标准包装: 1
系列: AgileRF™
主要目的: 计时,直接数字合成(DDS)
已用 IC / 零件: AD9854
已供物品:
相关产品: AD9854ASTZ-ND - IC DDS QUADRATURE CMOS 80-LQFP
AD9854
Rev. E | Page 14 of 52
Figure 16 and Figure 17 show the narrow-band performance of the AD9854 when operating with a 200 MHz reference clock with the
REFCLK multiplier bypassed vs. a 20 MHz reference clock and the REFCLK multiplier enabled at 10×.
0
CENTER 39.1MHz
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
5kHz/
SPAN 50kHz
00
63
6-
01
6
Figure 16. Narrow-Band SFDR, 39.1 MHz, 50 kHz BW,
200 MHz REFCLK with REFCLK Multiplier Bypassed
0
CENTER 39.1MHz
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
5kHz/
SPAN 50kHz
00
63
6-
01
7
Figure 17. Narrow-Band SFDR, 39.1 MHz, 50 kHz BW,
20 MHz REFCLK with REFCLK Multiplier = 10×
–100
–110
–150
–120
–130
–140
–160
–170
P
HAS
E
NO
IS
E
(
d
B
c/
Hz
)
AOUT = 80MHz
AOUT =5MHz
FREQUENCY (Hz)
10
1M
100
100k
10k
1k
00
63
6-
0
18
Figure 18. Residual Phase Noise,
300 MHz REFCLK with REFCLK Multiplier Bypassed
FREQUENCY (Hz)
–90
–100
–140
–110
–120
–130
–150
–160
10
1M
100
100k
10k
1k
PH
A
SE
N
O
IS
E
(d
B
c/
H
z)
AOUT =80MHz
AOUT =5MHz
00
63
6-
01
9
Figure 19. Residual Phase Noise,
30 MHz REFCLK with REFCLK Multiplier = 10×
DAC CURRENT (mA)
55
0
5
10
15
20
25
S
F
DR
(
d
Bc)
54
53
52
51
50
49
48
00
63
6-
0
20
Figure 20. SFDR vs. DAC Current, 59.1 AOUT,
300 MHz REFCLK with REFCLK Multiplier Bypassed
FREQUENCY (MHz)
620
0
S
UP
P
LY
C
URRE
NT
(m
A)
615
610
605
600
595
590
20
40
60
80
100
120
140
00
63
6-
021
Figure 21. Supply Current vs. Output Frequency (Variation Is Minimal,
Expressed as a Percentage, and Heavily Dependent on Tuning Word)
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