Temperature Compensated Crystal Oscillators (TCXO, VCTCXO)
Surface Mount Type TCXO (LSI Type) KT3225 Series
3.2×2.5mm
Features
• Miniature SMD type
(3.2×2.5×0.8mm)
• Freq. temp. characteristics.
:
±2.0×10
−
6
/
−30
to
+85°C
:
±0.5×10
−
6
/
−30
to
+85°C
(for GPS)
• 1.68 to 3.63V drive available
• Reflow compatible
• Operating Temp.
−40
to
+105°C
(Option)
• Ultra low supply current 600μA typ.
Conditions of 26MHz and 0.4Vp-p
(Option)
How to Order
KT3225K 26000 A C W 18 T xx
①
②
③ ④ ⑤ ⑥ ⑦ ⑧
①
Series
⑥
Supply Voltage
②
Output Frequency
18
1.8V
28
2.8V
③
Freq. Temp. Chrst.
30
3.0V
33
3.3V
A
B
C
D
C
E
G
W
V
U
±0.5×10
−
6
±1.0×10
−
6
±1.5×10
−
6
±2.0×10
−
6
−30°C
−20°C
−10°C
⑦
Voltage Control Function
T
Other
∗
TCXO
VCTCXO
RoHS Compliant
Applications
• Mobile Communications, W-LAN
• Low power radio communications
• GPS Unit
④
Lower Operating Temp.
⑧
Option Code
∗
Customer Spec.
⑤
Upper Operating Temp.
+85°C
+80°C
+75°C
Packaging (Tape & Reel 12000 pcs./ reel)
Specifications
Item
Output Frequency Range
Frequency Tolerance
Frequency Aging
Storage Temperature Range
Operating Temperature Range
Voltage Control Range
Supply Voltage
Output Level
Current Consumption
Harmonics
Symbol
fo
f
_tol
f
_age
T
_stg
T
_use
f
_cont
V
CC
Vpp
I
CC
—
vs Temperature
vs Load
vs Voltage
Per Year
Conditions
Min.
10
−0.5/ −2
−0.2
−0.2
−1
−40
−30
±8
1.68
0.8
—
—
Max.
52
+0.5/ +2
+0.2
+0.2
+1
+85
+85
±15
3.63
—
2
−5
Units
MHz
×10
−
6
×10
−
6
°C
°C
×10
−
6
V
Vp-p
mA
dBc
Positive
Clipped Sine
∗
, Load: 10k ohm / / 10pF
∗
: A DC-cut capacitor is not embedded in this crystal oscillator. Connect a DC-cut capacitor (
≥
1nF) to the line-out terminal of the oscillator.
∗
Please contact us for other specifications.
Dimensions
3.2±0.15
#4
#3
0.24
(Unit: mm)
Test Circuit
Test circuit 1
TCXO
Recommended Land Pattern
(Unit: mm)
2.5±0.15
Marking Area
A
Co
POWER
SUPPLY
Vcc
Spectrum Analyzer &
Counter, Oscilloscope
FET
PROBE
2.63
#4
#3
4
V
1
TCXO
3
2
#1
#2
0.8 max.
RL
CL
Test circuit 2
VCTCXO
A
Spectrum Analyzer &
Counter, Oscilloscope
FET
PROBE
1.6
#1
#2
Co
#1
0.8
#2
0.9
POWER
SUPPLY
Vcc
4
V
1
Vcon
TCXO
3
2
0.7
RL
CL
#4
0.6
2.0
#3
0.6
#1pin
#2pin
#3pin
#4pin
Pin Configuration
GND/ Vcon
GND
OUTPUT
Vcc
Note: A capacitor of value 0.01μF between V
CC
and GND is recommended.
RL=10kΩ±10% CL=10pF±10%
•
CL include Probe Capacitance
Co: DC Cut Capacitance
0.9
1.2
