Voltage Controlled Crystal Oscillators (VCXO’s)
S-Type
Description:
The S-Type is a high volume, high reliability
CMOS VCXO. It is ASIC based and available in a
through-hole or SMD industry standard footprint
ceramic package.
Features:
• Frequencies to 65.536 MHz
• 5 or 3.3 volt operation
• <6 ps rms jitter (output frequencies >12 MHz)
• Advanced custom ASIC technology
• Surface mountable
• TTL or CMOS selectable
• Tri-state output
• 0/70°C or -40/85°C Operating Temp. Range
Performance Characteristics
Parameter
Frequency:
Supply Voltage:
(+3.3 V)
(+5.0 V)
Symbol
f
O
V
DD
I
DD
V
OH
V
OL
t
R
t
F
SYM
V
C
V
C
APR
45
0/70 or –40/85
0.5
0.3
+/-50
+/- 80
+/-100
Positive
I
VCXO
BW
10
7.8 x 8.5 x 3.3
±1
4.5
3.0
Minimum
1.024
2.97
4.5
3.3
5.0
Typical
Maximum
65.536
3.63
5.5
Units
MHz
V
mA
--
Supply Current:
Output Logic Levels (VDD =4.5V):
Output Logic High:
Output Logic Low:
Transition Times:
Rise Time
Fall Time
Symmetry or Duty Cycle:
Operating temperature (ordering
option):
Test Conditions for APR (+5V option):
Test Conditions for APR (+3.3V option):
Absolute Pull Range (ordering
option):
10mA +0.25mA/MHz
0.8*V
DD
--
0.1* V
DD
5
5
55
V
V
ns
ns
%
°C
V
V
ppm
Gain Transfer:
Control Voltage Leakage Current:
Control Voltage Bandwidth (-3dB):
Package Size:
ppm/V
uA
kHz
mm
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
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Voltage Controlled Crystal Oscillators (VCXO’s)
S-Type
Thru-Hole
Gull-Wing
VCXO
Pin Out Information
Pin #
1
2
3
4
5
Symbol
V
C
Tri-state
GND
Output
TTL/CMOS
Name/Function
VCXO: Control Voltage to modulate frequency.
TTL logic low disables output. TTL logic high
or no connection enables output frequency.
Circuit and case ground
Output waveform
TTL logic low provides waveform symmetry
for CMOS. TTL logic high or no connection
provides waveform symmetry for TTL.
Supply Voltage, 5 V ±10% or 3.3V ±10%
Standard Frequencies (MHz)
1.024
4.000
6.176
10.000
12.900
16.123
20.480
32.768
50.000
1.544
4.032
6.312
11.000
13.000
16.384
24.000
34.368
51.840
2.000
4.096
6.400
11.2896
13.500
17.734
24.576
35.328
52.000
2.048
4.434
8.000
11.290
14.318
18.432
24.704
38.880
3.088
5.000
8.192
12.000
15.360
19.440
27.000
40.000
3.580
5.760
8.448
12.288
15.440
19.985
30.000
40.960
3.686
6.144
9.192
12.352
16.000
20.000
32.000
44.736
6
V
DD
Ordering Information
S
G
U
G
L
A
44.736
MHz
Package Size
S-Type
Frequency
Configuration
T
= Thru hole
G
= Gull wing
Output, Symmetry
U
= VCXO, +5V, standard linearity
L
= VCXO, +5V, ±10% linearity
D
= VCXO, +3.3V, standard linearity
K
= VCXO, +3.3V, ±10% linearity
Symmetry
A
= 45/55%
Temperature Range
C
= 0
o
C to +70
o
C
L
= -40
o
C to +85
o
C
Absolute Pull Range
G
= +50 ppm
N
= +80 ppm
H
= +100 ppm
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
25
嵌入式系统
