TCXO Series 310
Space qualified TCXO – Temperature Compensated Crystal
Oscillator,
General Specification DRAFT
January 18th 2010
ꢀ
Performance Characteristics
Electrical Parameters
Unit
Minimum
10
Typical
Maximum
100
Frequency output
Nominal frequency range
MHz
V
40
Output level (CMOS 5V,3.3V or 2.5V)
High level
V
90% Vcc
Low level
V
10% Vcc
40/60
5
Duty cycle
%
45/55
Rise & fall time
ns
Phase noise in static conditions @ 40 MHz
@ 1 Hz offset
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
-55
-85
– 65
– 95
@ 10 Hz offset
@ 100 Hz offset
-115
-135
-150
– 125
– 145
– 155
@ 1 kHz offset
@ 10 kHz offset or greater
Allan variance
@ 1s
ppb
1
Free running mode
Initial setting
ppm
ppm
ppm
ppm
ppm
ppb
±1
±2
0.1
0.1
1
Stability vs. temperature
Stability vs. 5 % supply voltage variation
Stability vs. 10 % load variation
Aging over first year
±0.5
±1
0.5
5
Aging over 15 years
10
Frequency adjustment with external resistor
Relative pulling frequency range
Resistor value range
ppm
± 5
0
10k
Ω
Supply voltage (Vcc pin)
Voltage range ( ±5%)
VDC
W
5
12
Supply power
0.2
Start up conditions
Start up time
ms
°C
10
Cold start
-40
4/8
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