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ELECTRICAL SPECIFICATION:

Note 1: measurements are done @ Tamb = +25 C = 15 pF to ground; unless otherwise noted
Note 2: Fo is the actual output frequency measured during Accuracy test
Note 2: frequencies above 52 MHz use straight multiplication design


PARAMETER
SYMBOL
CONDITIONS
VALUE
UNIT
Frequency, nom
fn
-
1.000
± ±
160.000
MHz
Supply voltage, nom.
Vcc
Vcc 5%
3.3VDC
5.0VDC
VDC
Supply current
Is
-
25.0
±
..60.0

mA
Freq. stability vs. temperature,
max. f/fc (Ta)


(ref. to +25
°
C)

SEE PART NUMBER
GENERATION TABLE

ppm
Freq. stability vs. supply
changes, max. f/fc ( Vs)
Supply change, 5% 5.0
ppm
Freq. stability vs. load changes,
max. f/fc ( load) Load change, 10% 3.0
ppm
Aging characteristics, max. f/fc ( t) f/fc ( t) t=1
st
year t=per year thereafter 4.0 2.0
ppm
ppm
HCMOS output levels
VOH / VOL
-
2.97 / 0.3
4.5 / 0.5
V
Duty cycle
DC
@ 50%Vcc
SEE PART NUMBER
GENERATION TABLE
%
Rise- / fall time, max.
tr / tf
20%~80% Vout, 80%~20% Vout
2.0
±
10.0 (see note A)
ns
Control voltage range
Vc
DC
0
±
+3.3
+0.5
±
+4.5
V
Pullability F/Fo

-
SEE PART NUMBER
GENERATION TABLE

ppm
Linearity, max. f/V
Positive slope
10


%
Input impedance, min.
Zin
- 10

K
Modulation freq. bandwidth, min. MBW (-3dB) - 10

KHz
Operating temperature range
Ta
-
SEE PART NUMBER
GENERATION TABLE

°
C
Storage temperature range
T(stg)
-
-45
±
+120
°
C
Absolute voltage ranges
Vcc,Vc(abs) Non-destructive, DC
-0.5
±
+7.0
V




















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MECHANICAL SPECIFICATION

Voltage Controlled Crystal Oscillator
VCXO
Page 2 of 2

R A L T R O N E L E C T R O N I C S C O R P .
§
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t h
S t
§
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§
U . S . A .
Tel: +001(305) 593-6033
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Fax: +001(305)594-3973
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internet: http:/www.raltron.com

7
.
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TYPICAL PHASE NOISE FOR FUNDAMENTAL MODE FREQUENCY

-95
-120
-140
-70
-150
-200
-150
-100
-50
0
10 Hz
100 Hz
1 KHz
10 KHz
100 KHz
Offset from carrier
d
B
c


PART NUMBERING SYSTEM


NOTE: Variations from standard specification are available, please contact factory.
All combinations of Stability Vs. Temperature range might not be available, please contact factory.



EXAMPLE: VC7425A-LZ-100-16.384-T












14 PIN DIP
SERIES
STABILITY
OVER
TEMPERATURE
REVISION
LEVEL

TEMPERATURE
RANGE (
°
C)
MINIMUM
PULLABILITY
(Over control
voltage range)
FREQUENCY
(MHz)
SYMMETRY
VC72: 5.0V HCMOS
VC74: 3.3V HCMOS

10:
±
15 ppm
15:
±
15 ppm
20:
±
20 ppm
25:
±
25 ppm
50:
±
50 ppm
00:
±
100 ppm
Assigned
LV: 0
±
+50
LZ: 0
±
+70
HZ: -20
±
+70
D3: -40
±
+85
50:
±
50 ppm
100:
±
100 ppm
150:
±
150 ppm
200:
±
200 ppm
1.00 to 160.00
Blank:40%
±
60%
T: 45%
±
55%
(Tight)
OUTLINE TOLERANCE: 0.015
°
/ 0.4mm
(Unless otherwise specified)

PIN OUT
Pin # 1 is the Control Voltage
Pin # 7 is the Ground, Case
Pin # 8 is the Output
Pin # 14 is the Supply Voltage,Vcc