Document No. 008-0244-0 Page 2 - 4 Rev. H
٠ ٠ ٠ CTS Electronic Components, Inc. ٠ 171 Covington Drive ٠ Bloomingdale, IL 60108 ٠ ٠ ٠
Model 357
7x5mm Low Cost
HCMOS/TTL Compatible VCXO
ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT
Maximum Supply Voltage
CC
- -0.5 - 7.0 V
Maximum Control Voltage
C
--0.5-
CC
V
Storage Temperature
T
STG
- -55 - 125 °C
Frequency Range
O
- 1.5 - 77.76 MHz
Frequency Stability
See Note 1 and Orderin
Information
∆f/f
O
---
20, 25 or
50
± ppm
Absolute Pull Range
(See Note 2 and Ordering Information)
APR -
50, 80 or
100
- - ± ppm
Operating Temperature
Commercial -20 70
Industrial -40 85
Supply Voltage
± 10 %
Model 357S, 357W 4.5 5.0 5.5
Model 357L, 357V 2.97 3.3 3.63
Supply Current
C
L
= 15 pF
1.5 MHz to 20 MHz - 5 20
20.1 MHz to 40 MHz - 8 30
40.1 MHz to 60 MHz - 10 40
60.1 MHz to 80 MHz - 12 45
Output Load
C
L
--30pF
Control Voltage
Model 357S, 357W V
CC
= 5.0V 0.5 2.5 4.5
Model 357L, 357V V
CC
= 3.3V 0.3 1.65 3.0
Frequency Deviation ∆f 25°C at Time of Shipment, over V
C
range - 135 - ± ppm
Linearity < 52 MHz - 5 10
Best Straight Line Fit > 52 MHz 8 15
Output Duty Cycle SYM @ 50% Level 45 - 55 %
Output Voltage Levels
Logic '1' Level
OH
CMOS Load
90%V
CC
--
Logic '0' Level
OL
CMOS Load - -
10%V
CC
Output Current Levels mA
Logic '1' Level
I
OH
CMOS Load - - -14
Logic '0' Level
I
OL
CMOS Load - - 14
Rise and Fall Time
T
, T
F
@ 10% - 90% Levels - 3.5 5.0 ns
Input Impedance Z
C
-50--kOhms
Transfer Function - - - Positive - -
Start Up Time
T
S
Application of V
CC
--10ms
Modulation Roll-off - @ -3dB 10 - - kHz
Phase Jitter tjms Bandwidth 12 kHz - 20 MHz - - 1 ps RMS
Enable Function
Enable Input Voltage
IH
Pin 2 or Pin 5 Logic '1', Output Enabled 2.5 - - V
Disable Input Voltage
IL
Pin 2 or Pin 5 Logic '0', Output Disabled - - 0.5
Enable Time
T
PLZ
Pin 2 or Pin 5 Logic '1'
- - 100 ns
Notes:
1.
2.
Absolute MaximumsElectrical and Waveform Parameters
°C
25
Inclusive of initial tolerance at time of shipment, changes in supply voltage, load, temperature and 10 year aging at an average
operating temperature of +40 °C.
Minimum guaranteed frequency shift from f
O
over variations in temperature, aging, power supply and load at an average operating temperature
of +40°C for 10 years.
V
V
C
V
L %
T
A
-
mA
I
CC
V
V
CC
SINGLE SIDE BAND PHASE NOISE
(typical maximum)
Frequency
Offset
Phase Noise
(dBc/Hz) *
Frequency
Offset
Phase Noise
(dBc/Hz) *
10 Hz -60 10k Hz -130
100 Hz -90 100k Hz -150
1k Hz -112 ≥ 100k Hz -150
* Results may vary depending on frequency.
