Temperature Compensated Crystal Oscillators(TCXO)
Surface Mount Type TCXO(Analog Type)
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
wqertyui
qSeries tSupply Voltage
wFrequency stability
yOption Code
uFrequency(MHz)
K ±5ppm
E ±2.5ppm
D ±2.0ppm
eLower operating temp
C −30°C
E −20°C
G −10°C
rUpper 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
iPackaging
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
FOUT 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
TSTG −30 +80 °C
TOPR −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% VDD 40 60 %
----- ---- −5 dBc
1.11.1
#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
10kΩ
±10%
Vcon
CL=10pF
±10%
Spectrum Analyzer
& Counter
FET
PROBE
CL include Probe Capacitance
POWER
SUPPLY
Vcc
A
V
12
43
VC-TCXO
10kΩ
±10%
Vcon
CL=10pF
±10%
Pin Connection
#1pin Vcon
#2pin GND
#3pin OUTPUT
#4pin Vcc
Pb Free
RoHS Conforming
5.0×3.2A
