Low-Frequency Dual EconOscillator
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
Master Oscillator Frequency
Nominal Output Frequency
Output Frequency Tolerance
Voltage Frequency Variation
(Note 3)
Temperature Frequency Variation
Output Duty Cycle
Power-Up Time
Output Rise/Fall Time
t
PU
t
R
, t
F
(Note 5)
C
L
= 15pF (both)
SYMBOL
f
MOSC
f
OUT0,
f
OUT1
∆f
OUT
∆f
OUT
∆f
OUT
T
A
= +25°C, V
CC
= 4.1V
T
A
= +25°C
2.7V to 5.5V, T
A
= +25°C
(Notes 3, 4)
-2.0
-100
45
CONDITIONS
MIN
TYP
1.048
MAX
UNITS
MHz
Hz
%
ppm/V
+2.5
+100
55
10
20
%
ppm/°C
%
ms
ns
DS1099
0.25
-1.0
3300
1,048,000
+1.0
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
All voltages referenced to ground.
Active supply current combines the standby current with the output current. The output current is defined by
I = (C
LOAD
+ 12pF ) x V
CC
x f
OUT
for each output when enabled.
This is the change observed in output frequency due to changes in temperature or voltage.
This parameter is guaranteed by design.
This indicates the time between power-up and the outputs becoming active.
Typical Operating Characteristics
(V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
V
CC
= 15pF, T
A
= +25°C
DS1099 toc01
SUPPLY CURRENT vs. TEMPERATURE
V
CC
= 5.5V, C
L
= 15pF
DS1099 toc02
SUPPLY CURRENT vs. OUTPUT LOAD
(BOTH OUTPUTS LOADED EQUALLY), T
A
= +25°C
DS1099 toc03
700
600
SUPPLY CURRENT (µA)
OUT0 = OUT1 = 1MHz
500
400
300
200
100
0
2.7
3.4
4.1
4.8
OUT0 =1MHz,
OUT1 = 0.25Hz
700
600
SUPPLY CURRENT (µA)
500
400
300
200
100
OUT0 = OUT1 = 0.25Hz
OUT0 =1MHz,
OUT1 = 0.25Hz
OUT0 = OUT1 = 1MHz
1.2
1.0
SUPPLY CURRENT (mA)
V
CC
= 5.5V
0.8
0.6
0.4
0.2
0
0
10
20
C
L
(pF)
30
40
V
CC
= 2.7V
V
CC
= 4.0V
OUT0 = OUT1 = 0.25Hz
0
5.5
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
50
_____________________________________________________________________
3
DALLAS [ DALLAS SEMICONDUCTOR ]
