DS1087L Datasheet, PDF (6/12 Pages) Dallas Semiconductor – 3.3V Spread-Spectrum EconOscillator

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