Hig h -Fre q u e n c y Wa ve fo rm Ge n e ra t o r
__________________________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s
(Circuit of Figure 1, V+ = DV+ = 5V, V- = -5V, V
= V
= V
= V
= 0V, R = 1kΩ, C = 20pF, T = +25°C, unless
PDO L L
A
DADJ
FADJ
PDI
otherwise noted.)
NORMALIZED OUTPUT FREQUENCY
vs. FADJ VOLTAGE
OUTPUT FREQUENCY
vs. IIN CURRENT
2.0
1.8
100M
10M
MAX038
I
= 100µA, COSC = 1000pF
IN
33pF
1.6
1.4
100pF
330pF
1.2
1.0
0.8
0.6
0.4
0.2
1M
3.3nF
100k
33nF
10k
1k
100nF
0
-3
-2
-1
0
1
2
3
1µF
V
(V)
FADJ
3.3µF
DUTY CYCLE vs. DADJ VOLTAGE
100
10
10µF
100
90
47µF
100µF
80
70
60
50
40
30
20
10
0
1
0.1
1
10
100
1000
IIN CURRENT (µA)
I
= 200µA
IN
-3
-2
-1
0
1
2
3
DADJ (V)
NORMALIZED OUTPUT FREQUENCY
vs. DADJ VOLTAGE
DUTY-CYCLE LINEARITY
vs. DADJ VOLTAGE
2.0
1.10
1.05
1.00
0.95
0.90
I
= 500µA
IN
I
= 10µA
IN
1.5
1.0
0.5
0
I
IN
= 25µA
I
IN
= 50µA
I
IN
= 250µA
I
IN
= 100µA
-0.5
-1.0
-1.5
-2.0
-2.5
I
IN
= 100µA
I
IN
= 250µA
I
= 50µA
IN
I
= 500µA
I
= 25µA
IN
IN
I
= 10µA
IN
0.85
-2.0
-1.0
0
1.0
1.5
2.5
DADJ (V)
DADJ (V)
4
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
