3.2×2.5A
Temperature Compensated Crystal Oscillators(TCXO)
Surface Mount Type TCXO(LSI Type)
KT21 Series
Features
• Ultra-miniature SMD Type
(3.2x2.5x1.0mm)
• Reflow compatible
• AFC function available
• 2.3 to 3.5V drive available
• Frequency Stability
:
±2.0ppm
at -30°C to +85°C
品
How to Order
q
qSeries
K
E
D
wFrequency
stability
±5ppm
±2.5ppm
±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
Oscilloscope
(100MHz)
KT21 - D C V 30
w er ty
- 19.680M - T
u
i
止
Conditions
0.01µF
4
3
VC-TCXO
1
2
Vcon
10kΩ
±10%
CL=10pF
±10%
0.01µF
4
3
VC-TCXO
1
2
Vcon
10kΩ
±10%
FET
PROBE
CL=10pF
±10%
tSupply
Voltage
28
2.8V
30
3.0V
yOption
Code
uFrequency(MHz)
12.600 19.200 26.000
13.000 19.440 38.400
14.400 19.680
16.800 19.800
iPackaging
T
Tape & Reel
2,000pcs/Reel
Applications
• PDC, GSM, CDMA
Specifications
Item
Output Frequency Range
Frequency Stability
産
Symbol
F
OUT
∆
f/fo
中
vs Temperature
vs Load
vs Voltage
Per Year
Positive
10k ohm // 10pF
@50% V
DD
Pb Free
RoHS Conforming
3.2±0.2
2.5+±0.2
Marking Area
#1 pin marking
sc
on
Dimensions
(Unit : mm)
Test Circuit
Test circuit 1
(Amplitude)
A
0.5
POWER
SUPPLY
Vcc
ue
Pr d
od
uc
t
#4pin
0.87
CL include Probe Capacitance
tin
Storage Temp. Range
Operating Temp. Range
Aging
Voltage control range
Supply Voltage
Output Voltage
Current Consumption
Duty Ratio
Harmonics
T
STG
T
OPR
∆
faging
∆
f/V
V
DD
Vout
I
DD
SYM
--
---
Min.
12.6
−2.0
−0.2
−0.3
−40
−30
−1
+/−8
2.3
0.8
----
-
40
-- -
--
Max.
38.4
+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
生
Recommended Land Pattern
(Unit : mm)
V
#3pin
1.0 max
Di
0.87 (0.50) 0.87
#1pin
#2pin
1.27
Test circuit 2
(Harmonics & Frequency)
A
Spectrum Analyzer
& Counter
0.87
Terminal:W+Ni(2 to 6µm)+Au(0.3 to 0.6µm)
(0.50)
#1pin
0.78
(2.24)
#2pin
0.78
#4pin
#3pin
POWER
SUPPLY
V
#1pin
#2pin
#3pin
#4pin
Pin Configuration
Vcon
GND
OUTPUT
Vcc
Vcc
CL include Probe Capacitance
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