Datasheet

DS1090
Low-Frequency, Spread-Spectrum
EconOscillator
_____________________________________________________________________ 5
OUTPUT FREQUENCY
vs. TEMPERATURE
DS1090 toc07
TEMPERATURE (
°
C)
FREQUENCY (MHz)
603510-15
5
6
7
8
9
10
4
-40 85
V
CC
= 3.3V
60kΩ
80kΩ
40kΩ
DUTY CYCLE
vs. TEMPERATURE
DS1090 toc08
TEMPERATURE (
°
C)
DUTY CYCLE (%)
603510-15
49
50
51
52
48
-40 85
R
SET
= 40kΩ
V
CC
= 3.3V
V
CC
= 5V
DS1090U-1
RESISTOR CURRENT
vs. RESISTOR VALUE
DS1090 toc09
R
SET
(k
Ω
)
RESISTOR CURRENT (μA)
706050
10
12
14
16
18
8
40 80
V
CC
= 3.3V, T
A
= +25°C
FREQUENCY ERROR
vs. SUPPLY VOLTAGE (FROM 3.3V)
DS1090 toc10
SUPPLY VOLTAGE (V)
FREQUENCY ERROR (%)
5.04.54.03.5
-2.5
0
2.5
5.0
-5.0
3.0 5.5
T
A
= +25°C
40kΩ
60kΩ
80kΩ
FREQUENCY ERROR
vs. TEMPERATURE (FROM +25°C)
DS1090 toc11
TEMPERATURE (
°
C)
FREQUENCY ERROR (%)
603510-15
-1.0
0
1.0
2.0
-2.0
-40 85
V
CC
= 3.3V
40kΩ
60kΩ
80kΩ
POWER SPECTRUM vs. SPREAD
DS1090 toc12
FREQUENCY (MHz)
POWER (dBm)
5.35
-70
-60
-50
-40
-30
-20
-10
0
-80
4.80 5.90
V
CC
= 3.3V,
T
A
= +25°C,
JC0 = JC1 = 1
OFF
±2%
±4%
±8%
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)