5.0×3.2A
Temperature Compensated Crystal Oscillators(TCXO)
Surface Mount Type TCXO (LSI Type)
KT18B Series
Features
• Ultra-miniature SMD Type
(5.0x3.2x1.5mm)
• Reflow compatible
• AFC function available
• 2.3 to 3.5V drive available
• Frequency Stability
:
±2.0ppm
at -30°C to +85°C
How to Order
KT18B - D C V 30
q
qType
wFrequency
stability
K
±5ppm
E
±2.5ppm
D
±2.0ppm
eLower
operating temp
C
−30°C
E
−20°C
G
−10°C
rUpper
operating temp
W
85°C
V
80°C
U
75°C
- 19.680M - T
u
i
w er t y
tSupply
Voltage
28
2.8V
30
3.0V
yOption
Code
uFrequency(MHz)
13.000 19.200 19.800
14.400 19.440 26.000
16.800 19.680
iPackaging
T
Tape & Reel
4,000pcs/Reel
Applications
• PDC, GSM, CDMA
Pb Free
RoHS Conforming
Specifications
Item
Output Frequency Range
Frequency Stability
Storage Temp. Range
Operating Temp. Range
Aging
Voltage control range
Supply Voltage
Output Voltage
Current Consumption
Duty Ratio
Harmonics
Symbol
F
OUT
∆
f/fo
Conditions
vs Temperature
vs Load
vs Voltage
T
STG
T
OPR
∆
faging
∆
f/V
V
DD
Vout
I
DD
SYM
--
---
Per Year
Positive
10k ohm // 10pF
@50% V
DD
Min.
13
−2.0
−0.2
−0.3
−40
−30
−1
+/−8
2.3
0.8
-- -
--
40
- --
--
Max.
26
+2.0
+0.2
+0.3
+85
+85
1
+/−15
3.5
---
--
2.0
60
-5
Units
MHz
ppm
°C
°C
ppm
ppm
Volt
Vp-p
mA
%
dBc
Dimensions
5.0±0.2
(Unit : mm)
Test Circuit
Test circuit 1
(Amplitude)
Recommended Land Pattern
(Unit : mm)
3.2±0.2
MARKING AREA
A
Oscilloscope
(100MHz)
V
4
3
VC-TCXO
1
2
Vcon
10kΩ
±10%
#4pin
CL=10pF
±10%
1.0
2.95±0.15
#3pin
#1pin Marking
POWER
SUPPLY
Vcc
1.5(MAX)
0.70±0.1
CL include Probe Capacitance
1.0
2.95±0.15
0.7±0.1
q
w
(1.6)
Test circuit 2
(Harmonics & Frequency)
A
Spectrum Analyzer
& Counter
Pin Configuration
Vcon
GND
OUTPUT
+Vcc
#1pin
1.3
#2pin
1.3
0.7±0.1
r
0.95±0.1
e
q
w
e
r
POWER
SUPPLY
Vcc
V
4
3
VC-TCXO
1
2
Vcon
10kΩ
±10%
FET
PROBE
CL=10pF
±10%
Dimension:(mm)
CL include Probe Capacitance
