
5x7 mm TCVCXO                 T85B Series
Description:
The T85B Temperature 
Compensated Voltage 
Controllable Crystal Oscillator 
(TCVCXO) Series products 
provide Stratum III level 
frequency stability with voltage 
controlled frequency adjust in a 
miniature 5 x 7 mm ceramic SMD 
package. 
www.bliley.com
                                                                                                                       Page 1 of 4                                                                                                                        Rev 1.2 
Features: 
Available in frequencies from 5 to 
26 MHz with 10 MHz, 12.8 MHz, 
25 MHz, and other frequencies as 
standards 
+/-4.6 ppm overall frequency 
stability including 20 years aging 
+/-5 ppm frequency pull range 
CMOS and Clipped Sine Wave 
available 
Standard 5 x 7 mm ceramic SMD 
package 
RoHS-6 / Lead-free compliant 
Tri-state control 
Frequency Range, Operating Temperature, and Frequency Stability: 
Frequency 
Range 
Temperature 
Code 
 -20 to +70
°
 C 
C 
 -40 to +85
°
 C  
D 
Add +/- 1ppm setting calibration @ +25
°
 C ; +/- 0.6 ppm for supply and load variation ; +/- 2.0 ppm for aging 
To achieve +/- 4.6 ppm overall stability or better 
For Frequency stabilities >= +/- 0.5 ppm with a clipped sinewave output the TV85B product should be selected
+/- 0.28 ppm is not available from –40 to 85
°
 C
Aging: 
(typical at 10MHz after 30 days continuous operation)
Frequency Timeframe 
Aging 
10 MHz 
20 Years 
+/- 2.5 ppm  
Phase Noise:
Operating 
Product 
Frequency 
Stability 
+/- 0.28 ppm 
+/- 0.50 ppm 
+/- 1.00 ppm 
Stability 
(Overall)* 
+/- 4.6 ppm
+/- 4.6 ppm
-+/-4.6 ppm
Product 
Code 
A 
B 
C 
5 to 26 MHz 
Product Code 
N/A 
Frequency 
Offset 
Phase Noise (Typ.) 
- 60 dBc/Hz 
- 90 dBc/Hz 
-120 dBc/Hz 
-140 dBc/Hz 
-155 dBc/Hz 
-155 dBc/Hz 
Product Code 
1 Hz 
10 Hz 
100 Hz 
1 KHz 
10 KHz 
100 KHz 
10.0 MHz 
N/A 
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