VOLTAGE CONTROLLED CRYSTAL OSCILLATOR - VCXO
QEV 14-KH & QEV4-KH
TIME
&FREQUENCY
CONSUMER & INDUSTRIAL DIL & HALF-DIL VCXO
Description
Our standard VCXOs QEV14-KH and QEV4-KH use a high precision sealed
quartz 2 points mount crystal with a hybrid or epoxy circuit board. They are
designed to operate at temperature to -40° C to +85° C. These low cost
oscillators are particularly well suited for cellular base stations, test
equipment, digital switching. Both DIL and half-DIL are able to drive TTL
and CMOS loads for more design flexibility. The QEV14-KH version utilizes
PLL technology above 40 MHz to offer an extended frequency up to
155.52 MHz with a pulling range up to ±150 ppm.
Frequency range
1 MHz to 150 MHz
Applications
Cellular base stations
PCS base stations
Synthesizers
Test equipment
Portable instrumentation and avionics
Minimum ordering information requirement
(See
Table 1
for available combinations)
(See
page 4-37
for package drawing)
Example: QEV 14 - KHRL 110 MHz 100DT50
Package
4 = Half size
14 = Full size
Option
R = 50/50 ± 5 % (duty cycle)
Features
L = ± 10 % max. (linearity)
Temperature ranges:
up to -40° C to +85° C
Pulling range
Frequency stability:
±25 to ±100 ppm ± 75 ppm
Supply voltage:
+5 V ± 5 % ± 100 ppm
Current consumption:
20 to 50 mA
± 150 ppm
Load:
15pF/10TTL-gates
Rise / fall time:
10 ns ± 200 ppm
Ageing:
±5 ppm / 1st year
Temperature
± 10 ppm / 10 years LQ = 0° C ~ +70 ° C
Start-up time:
10 mS @ Vcc = 4.75 V HQ = -20° C ~ +70° C
Pulling range:
± 50 ppm to ± 200 ppm min. DT = -40° C ~ +85° C
*
@ 2.5 Vdc ± 2 Vdc, slope positive
Stability
Linearity option:
<
± 10 %
Duty cycle option:
50/50 ± 5 % 25 = ± 25 ppm
*
50 = ± 50 ppm
100 = ± 100 ppm
Note:
1. Options with the same marker may not be combined with each
other.
Table 1:
Other temperature ranges
and stability available
QEV 4-KH
±25 ppm
Yes
±50 ppm
Yes
±100 ppm
Yes
±25 ppm
Yes
Yes
QEV 14-KH
±50 ppm
Yes
Yes
±100 ppm
Yes
Yes
1 - 40 MHz
40 - 150 MHz
4-30
Vol. 2
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