IQVCXO-172, -173, -174
ISSUE 10; 13 OCTOBER 2004
Delivery Options
I
Outline in mm
8.0 max
Please contact our sales office for current leadtimes
0.8 max
Output Compatibility
I
HCMOS/LS TTL
Drive Capability: 15pF/10LS TTL
∅0.45
4.0 min
Pin Connections
1. Voltage Control
7. GND
8. Output
14. +Vs
1
7
7.62
14
15.24
21.0 max
8
I
Package Outline
I
14 pin DIL compatible resistance welded enclosure,
hermetically sealed with glass to metal seals
Standard Frequency Stabilities
I
±25ppm, ±50ppm , ±100ppm @ V
c =
2.5V
(inclusive of supply voltage & output load variations
over the operating temperature range)
Operating Temperature Ranges
I
0 to 70°C
-40 to 85°C
Output Waveform - HCMOS/LS TTL
+Vs
90%Vs
t
f
t
r
I
Storage Temperature Range
I
–55 to 125°C
50%Vs
2.4V
1.4V
0.4V
T
Duty cycle = t x 100(%)
T
0V
t
LEADED VCXOs
Output Frequency Change
I
±50ppm min (IQVCXO-172)
±100ppm min (IQVCXO-173)
±200ppm min (IQVCXO-174)
I
10%Vs
I
Voltage Control Pin 1
I
2.5V ±2.0V
Marking
I
Model number
Operating temperature Code (if applicable)
Frequency Stability Code
Frequency
50
I
Typical Voltage Control Curve @ 25°C & 20.0 MHz
(IQVCXO-172)
I
I
I
Date Code (Year/Week)
∆f/f
0
(ppm)
25
0
Minimum Order Information Required
I
Frequency + Model Number + Operating Temperature
Code (if applicable) + Frequency Stability
-25
-50
0.5
1.5
2.5
3.5
13.08 max
4.5 Vcont(T)
Electrical Specifications - maximum limiting values when measured in HCMOS test circuit.
Frequency
Range
1.0 to
< 24.0MHz
1.0 to
< 24.0MHz
1.0 to
< 24.0MHz
24.0 to
45.0MHz
24.0 to
45.0MHz
24.0 to
45.0MHz
Frequency
Stability
±25ppm
±25ppm
±50ppm
±25ppm
±50ppm
±100ppm
±25ppm
±25ppm
±50ppm
±25ppm
±50ppm
±100ppm
Supply
Voltage
5V±0.25V
5V±0.25V
5V±0.25V
Output
Frequency
Change
±50ppm min
±100ppm min
±200ppm min
Supply Current
Rise Time(t
r
)
Fall Time(t
f
)
Duty Cycle
Model Number
20mA
20mA
20mA
10ns
10ns
10ns
10ns
10ns
10ns
40/60%
40/60%
40/60%
IQVCXO-172
IQVCXO-172I
IQVCXO-173
IQVCXO-173I
IQVCXO-174
IQVCXO-174I
IQVCXO-172
IQVCXO-172I
IQVCXO-173
IQVCXO-173I
IQVCXO-174
IQVCXO-174I
5V±0.25V
5V±0.25V
5V±0.25V
±50ppm min
±100ppm min
±200ppm min
40mA
40mA
40mA
10ns
10ns
10ns
10ns
10ns
10ns
40/60%
40/60%
40/60%
Ordering Example
Frequency
Model number
22.0MHz
IQVCXO-172 I C
Operating Temperature Code: I = -40 to 85°C; Not applicable for 0 to 70°C
Frequency Stability: A = ±25ppm, B = ±50ppm, C = ±100ppm
Note: some specifications may not be available, please contact our sales office.
LEADED VCXOs
Test Circuit - HCMOS
Test Circuit - LS TTL
A
2.0k
10.0k
Oscillator
1
7
14 8
V
A
2.0k
10.0k
Oscillator
1
14
V
V
0.1µF
7
8
+Vs
+Vs
D
1
2.0k
D
2
15pF*
Oscilloscope
V
0.1µF
15pF*
D
3
D
4
Oscilloscope
Frequency counter
Frequency counter
*Inclusive of jigging & equipment capacitance
D
1
to D
4
= IN4148
or equivalent
*Inclusive of jigging & equipment capacitance
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