CVXO-018T Model
5X7 mm SMD,
3.3V, HCMOS
Frequency Range:
Frequency Stability:
Temperature Range:
Operating:
(Option M)
(Option X)
Storage:
Input Voltage:
Control Voltage:
Settability At Nominal:
Control Range:
Input Current:
Output:
Load:
Symmetry:
Rise/Fall Time:
Logic:
Linearity:
Aging:
1MHz to 52MHz
±25ppm to ±100ppm
ree
dF S
a
Le oH ant
R pli
m
Co
Voltage Controlled
Crystal Oscillator
0°C to 70°C
-20°C to 70°C
-40°C to 85°C
-55°C to 125°C
3.3V ± 0.3V
1.65V ±1.65V
1.65V ±0.25V
±100ppm Min
40mA Max
HCMOS
15pF
40/60% Max @ 50% Vdd
5ns Max @ 20% to 80% Vdd
"0" = 10% Vdd Max
"1" = 90% Vdd Min
±10% Max
<3ppm 1st/yr, <1ppm every year thereafter
Designed to meet today's
requirements for 3.3V
Voltage Controlled
Crystal Oscillator SMD
Applications. The
CVXO-018T provides a
disable function for ICT
(in-circuit-testing).
Available on 16mm tape
and reel in quantities of
1K.
Dimensions inches (mm)
All dimensions are Max unless otherwise specified.
.283
(7.20)
SUGGESTED PAD LAYOUT
.055 ±.003
(1.40 ±.08)
#1
#2
#5
.200 ±.005
(5.08 ±.13)
#3
#4
.055 ±.003
(1.40 ±.08)
.148
(3.75)
.071 SQ
(1.80)
P/N
Freq DC
Denotes pad 1
.203
(5.15)
.075
(1.80)
#6
.200
(5.08)
0.01uF Bypass Capacitor Recommended
RECOMMENDED REFLOW SOLDERING PROFILE
TEMPERATURE
260°C
217°C
200°C
150°C
Ramp-Up
3°C/Sec Max.
Critical Temperature
Zone
Ramp-Down
6°C/Sec.
Crystek Part Number Guide
CVXO-018T X - 25 - 49.152
#1
#2
#3
#4
#5
#1 Crystek VCXO
#2 Model
#3 Temp. Range: Blank= 0/70°C
M= -20/70°C, X= -40/85°C
#4 Stability: (see Table 1)
#5 Frequency in MHz: 3 or 6 decimal places
Stability Indicator
Blank (std)
25
50
± 100ppm
± 25ppm
± 50ppm
Preheat
180 Secs. Max.
8 Minutes Max.
90 Secs. Max.
Table 1
260°C for
10 Secs. Max.
NOTE: Reflow Profile with 240°C peak also acceptable.
PIN
1
2
3
4
5
6
Connection
Cont. Volt.
Tri-State
GND
O/P
N/C
Vdd
Example:
CVXO-018TX-25-25.000 = 3.3V Tristate, -40/85°C, 40/60, 25ppm, 25.000 MHz
CVXO-018T-50-19.660800 = 3.3V Tristate, 0/70°C, 40/60, 50ppm, 19.660800 MHz
Tri-State Function
Tri-State pin
Open
"1" level 2.7V Min
"0" level 0.3V Max
Output pin
Active
Active
High Z
*Settability is the Control Voltage at which the Output Frequency is equal to the nominal Frequency.
Specifications subject to change without notice.
TD-021004 Rev. D
20
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