Temperature Compensated Crystal Oscillators
(KT18 Series)
Features
• Miniature SMD Type
(5.0×3.2×1.5mm)
• Frequency adjustment free after
reflow soldering process.
• AFC function available
• 2.6 to 5.5V drive available
• Frequency Stability
:
±2ppm
at 30 to
+85°C
How to Order
KT18 - D C V 30
q
qSeries
wFrequency
stability
K
E
D
±5ppm
±2.5ppm
±2.0ppm
- 19.680M - T
u
i
w er t y
tSupply
Voltage
28
2.8V
30
3.0V
yOption
Code
uFrequency(MHz)
12.800 16.800 19.680
13.000 19.200 19.800
14.400 19.440 26.000
iPackaging
T
Tape & Reel
4,000pcs/Reel
Applications
• PDC, GSM, CDMA, TDMA
Dimensions
5.0±0.2
(Unit : mm)
eLower
operating temp
C
−30°C
E
−20°C
G
−10°C
rUpper
operating temp
W
85°C
V
80°C
U
75°C
#1pin Marking
3.2±0.2
MARKING AREA
1.5(MAX)
Test circuit
0.70±0.1
Terminal:W+Ni(1~9µm)+Au(0.3~0.7µm)
2.95±0.15
q
w
Test circuit 1
(Amplitude)
Test circuit 2
(Harmonics & Frequency)
0.7±0.1
A
Synchronized
Scope Counter
(1.6)
POWER
SUPPLY
Vcc
A
Spectrum
Analyzer
POWER
SUPPLY
Vcc
V
0.7±0.1
4 3
OSCILLATOR
1 2
Vcon or N.C.
10kΩ
±5%
100kΩ
C1
V
4 3
OSCILLATOR
1 2
Vcon or N.C.
10kΩ
±5%
100kΩ
10pF
±5%
r
0.95±0.1
e
q
w
e
r
Pin Configuration
N.CorVcon
GND/CASE GND
OUTPUT
+Vcc
Specifications
Items
Supply Voltage
Output Frequency
Operating Temp.
Storage Temp.
Code
Vcc
fo
Topr
Tstg
∆f/fo
Aging
Vout
Icc
∆f/V
—
Specifications
Cellular
2.6 to 5.5
12.800
16.800
19.680
13.000
19.200
19.800
14.400
19.440
26.000
−30
to
+85
−40
to
+85
±2.0max
±2.5max
±0.2max
±0.3max
±1.0max
0.8min
2.0max
±8.0
to
±15
−5.0max
Unit
V
MHz
°C
°C
ppm
ppm
ppm
ppm/year
Vp-p
mA
ppm
dBc
Remarks
———
———
———
———
vs Temp. (After Reflow)
vs Load
vs Voltage
25°C±2°C
Load 10kΩ/10pF
———
———
———
Frequency Stability
Aging Rate
Output Voltage
Supply Current
Voltage Control Range
Harmonics
