DS1090 Datasheet, PDF (3/8 Pages) Maxim Integrated Products – Low-Frequency, Spread-Spectrum EconOscillator

Low-Frequency, Spread-Spectrum
EconOscillator
AC ELECTRICAL CHARACTERISTICS
(V_CC = +3.0V to +5.5V, T_A = -40°C to +85°C, unless otherwise noted.)
PARAMETER
Internal Master Oscillator
Frequency
SYMBOL
f_MOSC
CONDITIONS
Output Frequency Tolerance
∆f_OUT
V_CC = 3.3V,
T_A = +25°C
Voltage Frequency Variation
∆f_OUT
T_A = +25°C, R_SET = 60kΩ,
V_CC = 3.0V to 3.6V (Notes 2, 3)
T_A = +25°C, R_SET = 60kΩ,
V_CC = 4.5V to 5.5V (Notes 2, 3)
Temperature Frequency Variation
∆f_OUT
V_CC = 3.3V
(Notes 2, 3, 4)
Peak-to-Peak Dither (3σ)
(Note 5)
Power-Up Time
Load Capacitance
Output Duty Cycle
Output Rise/Fall Time
t_POR +
t_STAB
C_L
t_R, t_F
J0 = GND, J1 = GND
J0 = V_CC, J1 = GND
J0 = GND, J1 = V_CC
J0 = V_CC, J1 = V_CC
(Note 6)
(Note 7)
4MHz to 8MHz, T_A = +25°C (Note 3)
<4MHz (Note 4)
C_L = 15pF
MIN TYP MAX UNITS
4.0
8.0
MHz
-11.5
+11.5
%
-0.3
-1.25
+0.3
%
+1.25
-2.5
+2.5
%
0
2
%
4
8
0.1
0.5
ms
30
pF
45
55
%
50
20
ns
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
All voltages referenced to ground.
This is the change observed in output frequency due to changes in temperature or voltage.
See the Typical Operating Characteristics section.
Parameter is guaranteed by design and is not production tested.
This is a percentage of the output period. Parameter is characterized but not production tested. This can be varied from
0% to 8%.
This indicates the time between power-up and the outputs becoming active. An on-chip delay is intentionally introduced to
allow the oscillator to stabilize. t_STAB is equivalent to ~500 clock cycles and is dependent upon the programmed
output frequency.
Output voltage swings can be impaired at high frequencies combined with high output loading.
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