3.3V Spread-Spectrum EconOscillator
DS1087L
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE WITH OE = 0
DS1087L toc04
DS1087L toc05
SUPPLY CURRENT vs. PRESCALER
6
5
CURRENT (mA)
4
3
-40°C, +25°C, +85°C
2
1
0
1
10
100
1000
PRESCALER (DECIMAL)
V
CC
= 3.3V
OUPUT UNLOADED
4.0
3.5
3.0
CURRENT (mA)
2.5
2.0
1.5
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
1.8
1.6
1.4
CURRENT (µA)
V
CC
= 3.3V
OUTPUT UNLOADED
DS1087L toc06
2.0
V
CC
= 2.7V
OUTPUT UNLOADED
FREQUENCY = 66.6MHz
1.2
1.0
0.8
0.6
0.4
0.2
0
FREQUENCY = 206.4kHz
1.0
0.5
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
FREQUENCY % CHANGE vs.
SUPPLY VOLTAGE
DS1087L toc07
FREQUENCY % CHANGE vs.
TEMPERATURE
DS1087L toc08
ACTIVE SUPPLY CURRENT
vs. SCL FREQUENCY
V
CC
= SDA = 3.3V
FREQUENCY = 66.6MHz
OUTPUT UNLOADED
DS1087L toc09
1.00
FREQUENCY % CHANGE (FROM 3.3V)
0.80
0.60
0.40
0.20
0
-0.20
-0.40
-0.60
-0.80
-1.00
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
FREQUENCY = 66.6MHz
1.50
FREQUENCY % CHANGE (FROM 25°C)
1.00
0.50
0
-0.50
-1.00
-1.50
V
CC
= 3.3V
FREQUENCY = 66.6MHz
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
7
6
SUPPLY CURRENT (mA)
5
4
3
2
1
0
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
TEMPERATURE (°C)
0
100
200
300
400
SCL FREQUENCY (kHz)
DUTY CYCLE vs. VOLTAGE
DS1087L toc10
DUTY CYCLE vs. TEMPERATURE
59
58
DUTY CYCLE (%)
57
56
55
54
53
52
51
50
V
CC
= 3.3V
FREQUENCY = 66.6MHz
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
DS1087L toc11
60
59
58
DUTY CYCLE (%)
57
56
55
54
53
52
51
50
FREQUENCY = 66.6MHz
T
A
= +25°C
OUTPUT LOADED WITH
12pF OSCILLOSCOPE PROBE
60
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
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DALLAS [ DALLAS SEMICONDUCTOR ]
