Temperature Compensated Crystal Oscillators (TCXO’s)
TC-140 (R Series)
Description:
The TC-140 series offers performance for short-term stabili-
ty, phase noise, aging and temperature stability normally
only associated with Oven Controlled Crystal Oscillators,
while consuming typically <20 mA.
Features:
•
•
•
•
•
Stratum 3 option
Frequency from 0.5 to 160 MHz
“1 ppm Forever” option
TTL, HCMOS and Sinewave
Over 600,000 units produced
Performance Characteristics
Parameter
Standard Frequencies:
Supply Voltage (Vdd):
Characteristics
4.096, 10.00, 12.80, 13.00, 16.384, 19.44, 20.00, 20.48 MHz
Available from 0.5 MHz to 160 MHz
12.0 Vdc ±5%
(other options are available upon request)
5.0 Vdc ±5%
Current:
Current draw will vary greatly depending on frequency and output type.
For this series TCXO typical current draw will be about 20 mA. Please
consult the factory about your exact current requirements.
A
= HCMOS / ACMOS
B
= 10 TTL
G
= 0 dBm to +6 dBm
J
= +7 dBm to +13 dBm
0.5
0.5
3.0
3.0
to
to
to
to
160
160
100
100
MHz
MHz
MHz
MHz (+12 Vdc only)
Output:
B-1PM
- ±1.0 x 10
-6
over 0°C to +50°C, 10 years and initial accuracy
Note:
Not all stabilities are available
B-207
- ±2.0 x 10
-7
over 0°C to +50°C, Aging <2 ppm/10 years
with all frequency/output combinations.
B-ST3
- Stratum 3 over 0°C to +50°C, *See note below
Please consult the factory.
B-4PM
- ±4.6 x 10
-6
over 0°C to +50°C, 10 years and initial accuracy
C-1PM
- ±1.0 x 10
-6
over 0°C to +70°C, 10 years and initial accuracy
C-ST3
- Stratum 3 over 0°C to +70°C, *See note below
C-507
- ±5.0 x 10
-7
over 0°C to +70°C, Aging <2 ppm/10 years
C-4PM
- ±4.6 x 10
-6
over 0°C to +70°C, 10 years and initial accuracy
F-106
- ±1.0 x 10
-6
over -40°C to +85°C, Aging <2 ppm/10 years
F-4PM
- ±4.6 x 10
-6
over -40°C to +85°C, 10 years and initial accuracy
Temperature Stability:
*STRATUM 3 per GR-1244-CORE Table 3-1
Total Stability:
<±4.6 x 10
-6
for all causes and 10 years
Total Stability:
<±3.7 x 10
-7
for all causes and 24 hours
Note:
Tighter stabilities and wider temperature ranges are available, please
consult the factory.
Phase Noise (Typical):
10 MHz
+12 Vdc
J - Output
Frequency vs. Supply:
Package:
Offset
10 Hz
100 Hz
1 kHz
10 kHz
Phase Noise
-110 dBc/Hz
-135 dBc/Hz
-150 dBc/Hz
-155 dBc/Hz
<±0.05 ppm for a ±5% change in supply voltage
38.89 x 38.89 x 13.462 mm (1.53” x 1.53” x 0.53”)
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
60
Temperature Compensated Crystal Oscillators (TCXO’s)
TC-140 (R Series)
Outline Drawing
38.887 max
(1.531)
.508
(0.20)
Frequency Adjust
Access. For Mechanical
Adjust Units only.
13.462 max
(0.53)
Frequency Adjust Options
A
B
F
±3 ppm minimum via internal mechanical adjust
positive slope.
±3 ppm minimum via external voltage, 0 to +5 Vdc
No Frequency Adjust. Standard option for ±1 ppm
and ±4.6 ppm for 10 years units. However, this
option is available with all Stability options. No user
adjustment is needed. Unit is Plug-N-Play.
Note:
This option is ideal for high volume applica-
tions where minimal set-up and testing is desired.
20.320
(0.800)
5
2
1
6.350
(0.250)
10.160
(0.400)
5.842 min
(0.23)
1.270
(0.05)
.508
(0.02)
0.762 DIA. 5 PLACES
(.030)
2.54
(0.10)
25.4
(1.000)
12.70
(0.500)
12.70
38.887
max (0.500)
(1.531)
C
L
25.4
(1.000)
3
4
C
L
mm!
(in)
TCXO
Pin Out Information
Pin
1
2
3
4
5
Function
Output
Supply (Vdd)
Gnd
Freq. Adjust/NC
Gnd
Output Levels
Output Option A
Output
Voh min..
Vol max.
Load (typical)
Symmetry
Rise/Fall Time
HCMOS/ACMOS
0.8 (Vdd)
+0.5 Vdc
100 k ohm // 10 pF
50% ±10%
5 ns max.
B
10 TTL
Sine
Output Option
Output
+2.4 Vdc
Level
+0.5 Vdc
Load
10 TTL
Harmonics/subs
50% ±10%
Other Spurious
10 ns max.
-60 dBc max.
-80 dBc max.
-20 dBc max.
-20 dBc max.
50 ohm
50 ohm
0 dBm to +6 dBm +7 dBm to +13 dBm
G
Sinewave
J
Sinewave
Ordering Information
TC
Product Family
TC
= TCXO
Package
140
= package
Supply Voltage
B
= 12 Vdc ±5%
C
= 5.0 Vdc ±5%
140
C
A
B
4PM
F
12.80
MHz
Output Frequency
0.5 MHz to 160 MHz
Frequency Adjust Options
A
= Internal Mech. Adjust (standard)
B
= External Voltage Adjust
F
= No Frequency adjust (see above)
Temperature Stability
B-1PM
= ±1.0 x 10
-6
over 0°C to +50°C, 10 years (no freq. adjust)
B-207
= ±2.0 x 10
-7
over 0°C to +50°C
B-ST3
= Stratum 3 over 0°C to +50°C
B-4PM
= ±4.6 x 10
-6
over 0°C to +50°C, 10 years (no freq. adjust)
C-1PM
= ±1.0 x 10
-6
over 0°C to +70°C, 10 years (no freq. adjust)
C-ST3
= Stratum 3 over 0°C to +70°C
C-507
= ±5.0 x 10
-7
over 0°C to +70°C
C-4PM
= ±4.6 x 10
-6
over 0°C to +70°C, 10 years (no freq. adjust)
F-106
= ±1.0 x 10
-6
over -40°C to +85°C
F-4PM
= ±4.6 x 10
-6
over -40°C to +85°C, 10 years (no freq. adjust)
Note:
Other stabilities are available upon request.
Output
A
= HCMOS/ACMOS
B
= 10 TTL
G
= 0 dBm / 50 ohm
J
= +7 dBm / 50 ohm
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
61
