OCXO (Oven Controlled Crystal Oscillators)
+5.0V; +12V
MERCURY
Since 1973
OC31T Series
HCMOS Square Wave
OC31T Test Circuit
Bottom view
T2
Frequency counter
Oscilloscope
T1
A
80%
50%
20%
+
-
+
0.1uF
Vcc
V
-
*
15 pF
+
Vcon
T1
-
Tr
* Include probe, fixture and stray capacitances
Tf
Duty Cycle =
*100%
T2
OC31T Series Package Dimensions and Pin Connections:
unit mm
Pin 3: Supply Voltage
Pin 1: Voltage Control EFC
Pin 4: RF Output
Pin 2: Reference Voltage Output
Pin 5: Ground / Case
Part Number Format and Example:
Example: OC31T5S-10.000-0.01/-20+70
OC 31
n o
T
5
S
r
—
dash
10.000
s
—
dash
0.01
t
⁄
-20+70
u
slash
p q
n: “OC” Product Prefix for OCXO
o: Package type. “31” for OC31 package
p: Output wave form code. “T” for HCMOS square wave output..
q: Supply voltage code. “5” for +5.0V; “12” for +12.0V
r: Crystal type. Use “A” for AT-cut crystal; Use “S” for SC-cut crystal.
s: Frequency in MHz;
t: Frequency stability in ppm;
u: Operating temperature range: -20°C to +70°C in this case.
MERCURY
Page 2 of 2
Date: July 20, 2006
Rev. 0
MERCURY [ MERCURY UNITED ELECTRONICS INC ]
