Voltage Controlled Crystal Oscillators (VCXO’s)
V-Type
Description:
The V-Type is a High Volume, High
Reliability CMOS VCXO. It is ASIC based and
available in a SMD ceramic package.
Features:
• Output Frequencies to 77.760 MHz
• 5.0 or 3.3 volt operation
• Tri-State Output
• Jitter Performance <6 ps rms (output freq >12MHz)
• VCXO with Switchable TTL/CMOS Output
• Robust 6 contact Leadless Ceramic Chip Carrier
• Absolute Pull Range Performance to 100 ppm
• Commercial and Industrial Temperature Range
• EIA Compatible Tape and Reel Packaging
• Linearity available to + 10%
Performance Characteristics
Parameter
Frequency
Supply Voltage (+3.3 V)
(+5.0 V)
Supply Current
Output Logic Levels (V
DD
=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)
Gain Transfer
Control Voltage Leakage Current
Control Voltage Bandwidth (-3dB)
Package Size
Symbol Minimum
f
o
V
DD
I
DD
V
OH
V
OL
t
R
t
F
SYM
V
C
V
C
APR
0.8*V
DD
--
1.024
2.97
4.5
Typical
3.3
5.0
Maximum Units
77.76
3.63
5.5
65
--
MHz
V
mA
V
V
ns
ns
%
°C
V
V
ppm
0.1* V
DD
5
5
55
4.5
3.0
45
0.5
0.3
+/-50
+/- 80
+/-100
50
0/70 or –40/85
Positive
I
VCXO
BW
±1
10
5.0 x 7.5 x 2.1
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)
Outline Drawing
Pad Layout
VCXO
Pin Out Information
Pin #
1
2
2
Vc
Standard Frequencies* (MHz)
1.024
3.686
6.144
8.448
14.318
19.44
27.000
38.880
52.000
1.544
4.000
6.176
10.000
15.360
20.000
30.000
40.000
65.536
2.000
4.032
6.312
12.000
15.440
20.480
32.000
40.960
77.760
2.048
4.096
6.400
12.288
16.000
24.000
32.768
44.736
3.088
4.434
8.000
12.352
16.384
24.576
34.368
50.000
3.580
5.000
8.192
13.000
18.432
24.704
35.328
51.840
Symbol
Name/Function
Control Voltage.
TTL/CMOS
1
TTL logic low for CMOS optimized symmetry
TTL logic high or no connection for TTL optimized
symmetry.
3
4
5
2
GND
Output
Tri-state
Case/circuit ground.
Output waveform.
TTL logic low disables output.
TTL logic high or no connection enables output
waveform.
*Other frequencies available upon request.
6
VDD
Supply Voltage, 5 V ±10%, or 3.3V ±10%
1. This silicon oscillator is fabricated in CMOS technology and its output waveform will swing between ground and V
DD
for all but the highest fre-
quency applications. To account for the difference in switching thresholds between TTL logic (1.40 V) and CMOS logic (V
DD
/2), the TTL/CMOS lead
modifies the “on time” of the oscillator for maximum symmetry about the TTL or CMOS logic threshold. TTL logic low provides waveform symmetry
for CMOS. TTL logic high or no connection provides waveform symmetry for TTL. At output frequencies less than 12 MHz, this option is not provided
as the waveform transition times are small compared to the period. Hence, for fo <12 MHz this pin should be grounded for electrical isolation.
2. Alternate Pin Configuration for Tri-state Control on Pin 2 and TTL/CMOS on pin 5. Alternate Configuration is indicated by last letter of part code “D”
for TriState Pin 2 and TTL/CMOS on pin 5.
Ordering Information
V
Package Size
V
= 6 Pin ceramic LCC
Supply Voltage
C
= 5.0V +10%
D
= 3.3V +10%
Input
U
= VCXO
L =
Linear VCXO
D
U
G
L
A
35.328
MHz
Frequency
Symmetry (TTL/CMOS)
A =
50 +5% Tri-state on Pin #5
B =
50 +10% Tri-state on Pin #5
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
1. Not all combinations are possible. Other specifications may be available upon request.
2. Frequency: In MHz with decimal point, in Hz if no decimal is present.
3. 10% linearity available at certain frequencies. Consult factory.
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
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DIY/Open Source Hardware
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