Datasheet

AD5932 Data Sheet
Rev. A | Page 10 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
MCLK FREQUENCY (MHz)
9
8
7
6
4
3
5
2
1
0
0 5045403530252015105
05416-008
I
DD
(mA)
T
A
= 25°C
AVDD = 5V
MSBOUT, SYNCOUT ENABLED
DVDD = 5V
DVDD = 5V, F
OUT
= MCLK/7
DVDD = 3V, F
OUT
= MCLK/7
DVDD = 3V
Figure 8. Current Consumption (I
DD
) vs. MCLK Frequency
F
OUT
(Hz)
7
6
4
3
5
2
1
0
25MHz
20MHz
15MHz
10MHz
5MHz
2MHz
1MHz
500kHz
100kHz
10kHz
1kHz
500kHz
05416-009
I
DD
(mA)
T
A
= 25°C
MCLK = 50MHz
MSBOUT ON,
SYNCOUT ON
MSBOUT OFF,
SYNCOUT OFF
MSBOUT ON,
SYNCOUT OFF
MSBOUT OFF,
SYNCOUT ON
Figure 9. I
DD
vs. F
OUT
for Various Digital Output Conditions
LEGEND
1. SINE WAVE OUTPUT, INTERNALLY CONTROLLED SWEEP
2. TRIANGULAR OUTPUT, INTERNALLY CONTROLLED SWEEP
3. SINE WAVE OUTPUT, EXTERNAL
LY CONTROLLED SWEEP
4. TRIANGULAR OUTPUT, EXTERNALLY CONTROLLED SWEEP
CONTROL OPTION (See Legend)
3.5
3.0
2.0
1.5
2.5
1.0
0.5
0
3 421
05416-010
I
DD
(mA)
AIDD
DIDD
Figure 10. I
DD
vs. Output Waveform Type and Control
MCLK FREQUENCY (MHz)
–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
0 5045403530252015105
05416-011
SFDR (dBc)
AVDD = DVDD = 3V/5V
MCLK = 50MHz
C
REG
= 0111 1111
1111
T
A
= 25°C
F
OUT
= MCLK/7
F
OUT
= MCLK/50
F
OUT
= MCLK/3
Figure 11. Wide-Band SFDR vs. MCLK Frequency
MCLK FREQUENCY (MHz)
–60
–65
–70
–75
–80
–85
–90
0 50454035
30252015105
05416-012
SFDR (dBc)
AVDD = DVDD = 3V/5V
MCLK = 50MHz
C
REG
= 0111 1111 1111
T
A
= 25°C
F
OUT
= MCLK/7
F
OUT
= MCLK/50
F
OUT
= MCLK/3
Figure 12. Narrow-Band SFDR vs. MCLK Frequency
F
OUT
(MHz)
–30
–40
–50
–60
–70
–80
–90
0.001 1001010.10.01
05416-013
SFDR (dBc)
AVDD = DVDD = 3V/5V
C
REG
= 0111 1111 1111
T
A
= 25°C
MCLK = 1MHz
MCLK = 10MHz
MCLK = 30MHz
MCLK = 50MHz
Figure 13. Wideband SFDR vs. F
OUT
for Various MCLK Frequencies