Datasheet

AD9835 Data Sheet
Rev. A | Page 10 of 28
70
60
50
40
30
10
20
0.124 0.204
SNR (dB)
0.084 0.164 0.244 0.284 0.324
AVDD = DVDD = +5V
50MHz
30MHz
10MHz
f
OUT
/f
MCLK
0.3640.044
09630-013
Figure 13. SNR vs. f
OUT
/f
MCLK
for Various MCLK Frequencies
RBW 1kHz VBW 3kHz ST 50 SEC
10dB/DIV
0Hz
START
25MHz
STOP
09630-014
Figure 14. f
MCLK
= 50 MHz, f
OUT
= 2.1 MHz. Frequency Word = ACO8312
RBW 1kHz VBW 3kHz ST 50 SEC
0Hz
START
25MHz
STOP
10dB/DIV
09630-015
Figure 15. f
MCLK
= 50 MHz, f
OUT
= 3.1 MHz. Frequency Word = FDF3B64
RBW 1kHz VBW 3kHz ST 50 SEC
0Hz
START
25MHz
STOP
10dB/DIV
09630-016
Figure 16. f
MCLK
= 50 MHz, f
OUT
= 7.1 MHz. Frequency Word = 245AICAC
RBW 1kHz VBW 3kHz ST 50 SEC
10dB/DI
V
0Hz
START
25MHz
STOP
09630-017
Figure 17. f
MCLK
= 50 MHz, f
OUT
= 9.1 MHz. Frequency Word = 2E978D50
10dB/DIV
RBW 1kHz VBW 3kHz ST 50 SEC
0Hz
START
25MHz
STOP
09630-018
Figure 18. f
MCLK
= 50 MHz, f
OUT
= 11.1 MHz. Frequency Word = 38D4FDF4