DS1099 Datasheet, PDF (3/6 Pages) Dallas Semiconductor – Low-Frequency Dual EconOscillator

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
SYMBOL
f_MOSC
f_OUT0,
f_OUT1
∆f_OUT
∆f_OUT
∆f_OUT
CONDITIONS
T_A = +25°C, V_CC = 4.1V
T_A = +25°C
2.7V to 5.5V, T_A = +25°C
(Notes 3, 4)
t_PU
t_R, t_F
(Note 5)
C_L = 15pF (both)
MIN
0.25
-1.0
-2.0
-100
45
TYP
1.048
MAX
UNITS
MHz
1,048,000 Hz
3300
+1.0
+2.5
+100
55
10
20
%
ppm/V
%
ppm/°C
%
ms
ns
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.
(V_CC = +5.0V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
SUPPLY CURRENT vs. SUPPLY VOLTAGE
V_CC = 15pF, T_A = +25°C
700
600
OUT0 = OUT1 = 1MHz
500
400
300
OUT0 =1MHz,
200
OUT1 = 0.25Hz
100
0
2.7
OUT0 = OUT1 = 0.25Hz
3.4
4.1
4.8
5.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
V_CC = 5.5V, C_L = 15pF
700
600
OUT0 = OUT1 = 1MHz
500
400
OUT0 =1MHz,
300
OUT1 = 0.25Hz
200
100
OUT0 = OUT1 = 0.25Hz
0
-40 -15
10
35
60
85
TEMPERATURE (°C)
SUPPLY CURRENT vs. OUTPUT LOAD
(BOTH OUTPUTS LOADED EQUALLY), T_A = +25°C
1.2
1.0
V_CC = 5.5V
0.8
0.6
V_CC = 4.0V
0.4
0.2
0
0
V_CC = 2.7V
10
20
30
40
50
C_L (pF)
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