T
emperature Compensated Crystal Oscillators(TCXO)
Surface Mount T
ype TCXO(Analog T
ype)
KT20A Series
Dimensions
Test Circuit
Recommended Land Pattern
(Unit : mm)
(Unit : mm)
Features
• Miniature SMD Type
(5.0x3.2x1.5mm)
• Reflow compatible
• AFC function available
• 2.7V/2.8V/3.0V drive available
• Frequency Stability
:
±
2ppm at -30
°
C to +80
°
C
• Phase Noise -140dBc/Hz
@1kHz offset(max)
How to Order
Applications
• GSM, CDMA
Specifications
KT20A - D C V 30 - 19.680M - T
w
qe
r
t
y
u
i
q
Series
t
Supply Voltage
w
Frequency stability
y
Option Code
u
Frequency(MHz)
K
±
5ppm
E
±
2.5ppm
D
±
2.0ppm
e
Lower operating temp
C
−
30
°
C
E
−
20
°
C
G
−
10
°
C
r
Upper operating temp
V
80
°
C
T
70
°
C
R
60
°
C
28
2.8V
30
3.0V
19.200
19.680
26.000
19.440
19.800
i
Packaging
T
Tape & Reel
4,000pcs/Reel
Item
Symbol
Conditions
Min.
Max.
Units
Output Frequency Range
Frequency
Stability
Storage Temp. Range
Operating Temp. Range
Aging
Voltage control range
Supply
Voltage
Output
Voltage
Current
Consumption
Duty
Ratio
Harmonics
F
OUT
19.2
26
MHz
vs
Temperature
−
2.0
+
2.0
∆
f/
fo vs
Load
−
0.2
+
0.2 ppm
vs
Voltage
−
0.3
+
0.3
T
STG
−
30
+
80
°
C
T
OPR
−
40
+
85
°
C
∆
faging
Per
Year
−
1 1
ppm
∆
f/V
Positive
+/−
8
+/−
15 ppm
V
DD
2.8
3
Volt
Vout
10k ohm // 10pF
0.8
----
Vp-p
I
DD
----
1.5 mA
SYM
@50%
V
DD
40
60
%
-----
----
−
5 dBc
1.1
1.1
#4pin
#3pin
#1pin
#2pin
1.4
1.4
2.8
1.6
Test circuit 2
(Harmonics & Frequency)
Test circuit 1
(Amplitude)
Oscilloscope
(100MHz)
CL include Probe Capacitance
POWER
SUPPLY
Vcc
A
V
12
43
VC-TCXO
10k
Ω
±
10%
Vcon
CL=10pF
±
10%
Spectrum Analyzer
& Counter
FET
PROBE
CL include Probe Capacitance
POWER
SUPPLY
Vcc
A
V
12
43
VC-TCXO
10k
Ω
±
10%
Vcon
CL=10pF
±
10%
Pin Connection
#1pin
Vcon
#2pin
GND
#3pin
OUTPUT
#4pin
Vcc
Pb Free
RoHS Conforming
5.0
×
3.2
A
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