3.3V Spread-Spectrum EconOscillator
Typical Operating Characteristics
(VCC = 3.3V, T = +25°C, unless otherwise noted.)
A
SUPPLY CURRENT
vs. TEMPERATURE WITH OE = 0
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY CURRENT vs. PRESCALER
6
5
4
3
2
1
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
= 3.3V
CC
V
= 2.7V
V
= 3.3V
CC
CC
OUPUT UNLOADED
OUTPUT UNLOADED
OUTPUT UNLOADED
FREQUENCY = 66.6MHz
-40°C, +25°C, +85°C
FREQUENCY = 206.4kHz
1
10
100
1000
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
PRESCALER (DECIMAL)
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQUENCY % CHANGE vs.
SUPPLY VOLTAGE
FREQUENCY % CHANGE vs.
TEMPERATURE
ACTIVE SUPPLY CURRENT
vs. SCL FREQUENCY
1.00
0.80
0.60
0.40
0.20
0
1.50
1.00
0.50
0
7
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
FREQUENCY = 66.6MHz
V
= 3.3V
V
= SDA = 3.3V
CC
FREQUENCY = 66.6MHz
OUTPUT UNLOADED
CC
6
5
4
3
2
1
0
FREQUENCY = 66.6MHz
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
-0.20
-0.40
-0.60
-0.80
-1.00
-0.50
-1.00
-1.50
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VOLTAGE (V)
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
0
100
200
300
400
TEMPERATURE (°C)
SCL FREQUENCY (kHz)
DUTY CYCLE vs. VOLTAGE
DUTY CYCLE vs. TEMPERATURE
60
59
58
57
56
55
54
53
52
51
50
60
59
58
57
56
55
54
53
52
51
50
FREQUENCY = 66.6MHz
V
= 3.3V
CC
T = +25°C
FREQUENCY = 66.6MHz
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
A
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VOLTAGE (V)
0
10
20
30
40
50
60
70
TEMPERATURE (°C)
6
_____________________________________________________________________