3.2×2.5mm
Temperature Compensated Crystal Oscillators (TCXO, VCTCXO)
Surface Mount Type TCXO (LSI Type) KT3225 Series
RoHS Compliant
Features
• Miniature SMD type
(3.2×2.5×1.0mm)
• AFC function available
• Freq. temp. characteristics.
:
±2.0×10-6/ -30 to +85°C
• 1.68 to 3.6V drive available
• Reflow compatible
• Ultra low supply current 600µA typ.
Conditions of 26MHz and 0.4Vp-p
(Option)
Applications
• 3G (CDMA, W-CDMA, TD-SCDMA),
GPRS, GSM, W-LAN, WiMAX
• Low power radio communications
How to Order
KT3225K 26000 D C W 28 T xx
① ② ③ ④ ⑤ ⑥ ⑦ ⑧
①Series
②Output Frequency
③Freq. Temp. Chrst.
B±1.0×10-6
C±1.5×10-6
D±2.0×10-6
④
Lower Operating Temp.
C-30°C
E-20°C
G-10°C
⑤
Upper Operating Temp.
W+85°C
V+80°C
U+75°C
⑥
Supply Voltage
18 1.8V 28 2.8V
30 3.0V 33 3.3V
⑦
Voltage Control Function
T
TCXO
Other
*VCTCXO
* Customer Spec.
⑧
Option Code
Packaging (Tape & Reel 12000 pcs./ reel)
Specifications
Item Symbol Conditions Min. Max. Units
Output Frequency Range fo Standard Frequency: 13, 19.2, 26, 38.4, 40, 52 10 52 MHz
Frequency Tolerance f_tol
vs Temperature -2+2
×10-6
vs Load -0.1 +0.1
vs Voltage -0.2 +0.2
Frequency Aging f_age Per Year -1+1×10-6
Storage Temperature Range T_stg -40 +85 °C
Operating Temperature Range
T_use -30 +85 °C
Voltage Control Range f_cont Positive ±8±15 ×10-6
Supply Voltage VCC 1.68 3.6 V
Output Level Vpp Clipped Sine*, Load: 10k ohm / / 10pF 0.8 — Vp-p
Current Consumption ICC — 2 mA
Harmonics — — -5 dBc
* : 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.
Test Circuit
Test circuit 1
Non VC Function
Spectrum Analyzer &
Counter, Oscilloscope
A
V
1 2
4 3
TCXO
CL
Co
RL=10kΩ±10% CL=10pF±10%
• CL include Probe Capacitance
Co: DC Cut Capacitance
POWER
SUPPLY
Vcc
FET
PROBE
Test circuit 2
With VC Function
Spectrum Analyzer &
Counter, Oscilloscope
A
V
1 2
4 3
TCXO
CL
Co
POWER
SUPPLY
Vcc
FET
PROBE
Vcon
RL
RL
Recommended Land Pattern
(Unit: mm)
Note: A capacitor of value 0.01µF between VCC
and GND is recommended.
1.6
1.2
0.8
2.63
#4 #3
#1 #2
Dimensions (Unit: mm)
Pin Configuration
#1pin Vcon/ GND
#2pin GND
#3pin OUTPUT
#4pin Vcc
0.24
3.2±0.15
2.5±0.15
0.90.70.9
#1
#4 #3
#4 #3
#2
#1 #2
0.6 2.0 0.6
Marking Area
0.8 max.
