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DS1090U-32+T

P1-P3P4-P6P7-P8
DS1090
Low-Frequency, Spread-Spectrum
EconOscillator
4 _____________________________________________________________________
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS1090 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.04.54.03.5
0.95
1.20
1.45
1.70
0.70
3.0 5.5
NO LOAD, T
A
= +25°C
40kΩ
60kΩ
80kΩ
SUPPLY CURRENT
vs. TEMPERATURE
DS1090 toc02
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
603510-15
0.70
0.90
1.10
1.30
1.50
0.50
-40 85
NO LOAD, V
CC
= 3.3V
40kΩ
60kΩ
80kΩ
SUPPLY CURRENT
vs. OUTPUT LOADING
DS1090 toc03
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
353025201510
1
2
3
4
0
540
T
A
= +25°C, R
SET
= 40kΩ
4V
3V
5V
OUTPUT VOLTAGE HIGH
vs. OUTPUT CURRENT
DS1090 toc04
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
-1-2-3-4
2.8
2.9
3.0
3.1
2.7
-5 0
V
CC
= 3.0V
OUTPUT VOLTAGE LOW
vs. OUTPUT CURRENT
DS1090 toc05
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
4321
0.1
0.2
0.3
0.4
0
05
V
CC
= 3.0V
OUTPUT FREQUENCY
vs. SUPPLY VOLTAGE
DS1090 toc06
SUPPLY VOLTAGE (V)
FREQUENCY (MHz)
5.04.54.03.5
5
6
7
8
9
10
4
3.0 5.5
T
A
= +25°C
60kΩ
80kΩ
40kΩ
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.)
DS1090
Low-Frequency, Spread-Spectrum
EconOscillator
6 _____________________________________________________________________
Pin Description
Block Diagram
PIN NAME FUNCTION
1 OUT Oscillator Output
2R
SET
Frequency Control Resistor Input
3V
CC
Positive-Supply Terminal
4 GND Ground
5J0
6J1
Dither Amplitude (Percentage) Inputs
(see Table 2)
7 JC0
8 JC1
Dither Rate Divisor Inputs (see Table 1)
DS1090
GND
MASTER
OSCILLATOR
(VCO)
4MHz–8MHz
FACTORY
PROGRAMMED
PRESCALER
(÷ 1, 2, 4, 8, 16, OR 32)
TRIANGLE
GENERATOR
V
CC
V
CC
R
SET
VOLTAGE-
BIAS CIRCUIT
OUT
f
MOSC
f
OSC
f
MOD
f
OUT
J0
J1
JC0
JC1
BUFFER
+
+
DITHER
AMPLITUDE
(0, 2, 4, OR 8%)
DITHER RATE
(÷ 4, 8, 16, OR 32)
+
-
(÷ 128)
DITHER GENERATOR
∑
P1-P3P4-P6P7-P8

DS1090U-32+T

Mfr. #:
Buy DS1090U-32+T
Manufacturer:
Maxim Integrated
Description:
Programmable Oscillators Low-Frequency Spread Spctrm EconOscillat
Lifecycle:
New from this manufacturer.
Delivery:
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