WORLD TECHNOLOGIES LTD.
TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR - TXCO
World Technologies Ltd. TCXO’s are designed for low power consumption to provide a high
stability frequency reference over a pre-determined wide temperature range. WTL offers various
package sizes and features optimized for your particular application.
The TXCO characteristics can be cost effective on the following specifications and must be
considered when specifying these parameters.
Frequency Range:
Specify within range of 9.000000MHz to 50.000000 MHz.
Frequency Stability:
The best and most achievable stabilities (for AT cut crystals) are ±1
ppm, ±1.5 ppm, ±2.0 ppm, up to ±5.0 ppm. Typically, a ±5.0 ppm stability over a temperature
range of (0°C to 50°C) will cost less than ±2.5 ppm at (-30°C to 75°C).
Operating Temperature Range:
You may select from the technical data sheet and this
parameter can be cost effective.
Input Voltage:
Standard input is +5 volts DC ± 5%. (Optional input is =3 volts DC ± 5% for
battery operated portable applications. There is no extra charge for a 3 Volt circuit.)
Package Style:
WTL offers TCXO’s in various through hole and surface mount packages.
Most economical are the package style A & B. Package style C & D are not pictured, however,
have the same foot print as style B.
9215 Pflumm Road
!
Lenexa, Kansas 66215
!
Phone (913) 438-9825 (800) 900-9825
!
Fax (913) 438-7989
9-1
WORLD TECHNOLOGIES LTD.
Temperature Compensated Crystal Oscillators
SPECIFICATIONS
Frequency Range
Standard Freq (MHz)
Frequency Stability
ELECTRICAL
9.000000MHz to 50.000000MHz
9.0, 9.6, 10.0, 10.24, 12.0, 12.8, 15.369, 20.456, 50.000
WTL 8000 Series
MECHANICAL
OUTLINE DIMENSIONS
18.5
Operating Temperature
Range
Input Volt. Change
Input Voltage
Output Voltage
Current Consumption
Load
Aging
Frequency Adjustment
Package Style
-40°C to +85°C
±0.3 ppm / ±5V ±5%
➀
➁
➂
➃
➄
➅
➀
➁
➂
➃
➄
➅
➆
± 1.5 ppm
± 2.0 ppm
± 2.5 ppm
± 3.0 ppm
± 3.5 ppm
± 5.0 ppm
0°C to +50°C
-10°C to +60°C
-20°C to +70°C
-30°C to +60°C
-30°C to +75°C
-35°C to +80°C
Pin 14
.50
Pin 1
11.4 max.
4.70 mm
18.5 max.
Pin 7
7.62
Pin 8
(A) SMD (4.7 HEIGHT)
➀
5V ±5% (Standard)
➁
3V ±5% (For battery applications.)
1V
P
-
P
min
1.5mA, 2mA max
10K //10pf
±1ppm/year
Internal Trimmer ±3ppm min
(A) - SMD (4.7 mm Height)
(B) - DIP (4.7 mm Height)
(C) - DIP (5.8 mm Height)-Refer to “B”
(D) - DIP (7.5 mm Height)-Refer to “B”
(E) - SMD (3.7 mm Height)
(F) - SMD (3.7 mm Height)
(G) - SMD (2.0 mm Height)
7.5± 0.3
4.0min 4.7± 0.2
11.4 ±0.3
2.4
18.5 ±0.3
3.2
4.0
7
1
14
8
P/N code
WTL - 8
❏
❏
❏
❏
15.0± 0.3
Package
WTL8351G-10
Input voltage
Operating temperature
Freq. stability
PIN CONNECTION
1.
7.
8.
No Connection
GND and CASE
Output
!
Fax (913) 438-7989
(B) DIP (4.7 HEIGHT)
14. Vcc
9215 Pflumm Road
!
Lenexa, Kansas 66215
!
Phone (913) 438-9825 (800) 900-9825
9-2
嵌入式系统
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