Datasheet

DS1087L
3.3V Spread-Spectrum EconOscillator
6 _____________________________________________________________________
FREQUENCY % CHANGE vs.
SUPPLY VOLTAGE
DS1087L toc07
VOLTAGE (V)
FREQUENCY % CHANGE (FROM 3.3V)
3.53.43.2 3.32.9 3.0 3.12.8
-0.80
-0.60
-0.40
-0.20
0
0.20
0.40
0.60
0.80
1.00
-1.00
2.7 3.6
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
FREQUENCY = 66.6MHz
FREQUENCY % CHANGE vs.
TEMPERATURE
DS1087L toc08
TEMPERATURE (°C)
FREQUENCY % CHANGE (FROM 25°C)
80706050403020100-10-20-30
-1.00
-0.50
0
0.50
1.00
1.50
-1.50
-40 90
V
CC
= 3.3V
FREQUENCY = 66.6MHz
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
ACTIVE SUPPLY CURRENT
vs. SCL FREQUENCY
SCL FREQUENCY (kHz)
SUPPLY CURRENT (mA)
300200100
1
2
3
4
5
6
7
0
0 400
DS1087L toc09
V
CC
= SDA = 3.3V
FREQUENCY = 66.6MHz
OUTPUT UNLOADED
DUTY CYCLE vs. VOLTAGE
DS1087L toc10
VOLTAGE (V)
DUTY CYCLE (%)
3.53.43.2 3.32.9 3.0 3.12.8
51
52
53
54
55
56
57
58
59
60
50
2.7 3.6
FREQUENCY = 66.6MHz
T
A
= +25°C
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
TEMPERATURE (°C)
60
5030 402010070
DUTY CYCLE vs. TEMPERATURE
DS1087L toc11
DUTY CYCLE (%)
51
52
53
54
55
56
57
58
59
60
50
V
CC
= 3.3V
FREQUENCY = 66.6MHz
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
1
2
3
4
5
6
0
SUPPLY CURRENT vs. PRESCALER
DS1087L toc04
PRESCALER (DECIMAL)
100101 1000
CURRENT (mA)
V
CC
= 3.3V
OUPUT UNLOADED
-40°C, +25°C, +85°C
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
SUPPLY CURRENT
vs. TEMPERATURE WITH OE = 0
DS1087L toc05
TEMPERATURE (°C)
CURRENT (mA)
80706050403020100-10-20-30-40 90
FREQUENCY = 66.6MHz
V
CC
= 2.7V
OUTPUT UNLOADED
FREQUENCY = 206.4kHz
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
DS1087L toc06
TEMPERATURE (°C)
CURRENT (µA)
807050 60-10 0 10 20 30 40-30 -20
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
-40 90
V
CC
= 3.3V
OUTPUT UNLOADED