Surface Mount Oscillator, TCXO, TCVCXO
Metal Package, 11 mm x 18 mm
Frequency
Output Level
Level
Duty Cycle
Rise / Fall Time
Output Load
Frequency Stability
Frequency Stability at +25 C
Aging
Supply Voltage
Current
Control Voltage (I721 / I722)
Slope
Temperature
Operating
Storage
Environmental
Package Information
I521 / I522 / I721 / I722 Series *
I522 / I722
I521 / I721
1.000 MHz to 40.000 MHz
10.000 MHz to 40.000 MHz
HC-MOS / TTL
Clipped Sine
‘0’ = 0.1 Vcc Max., ‘1’ = 0.9 Vcc Min.
1.0 V p-p Min.
50% 10%
10 nS Max.
15 pF, Fo < 50 MHz = 10 TTL, Fo > 50 MHz = 5 LSTTL
20K Ohms / 10 pF
See Frequency Stability Table
1 ppm (I521 and I522)
1 ppm / Year Max.
See Supply Voltage Table, tolerance 5 %
50 mA Max. **
3 mA Max.
1.65 VDC 1.5 VDC, 5 ppm Min. for Vcc = 3.3 VDC, 2.5 VDC 2.0 VDC, 5 ppm Min. for Vcc = 5.0 VDC
Positive
See Operating Temperature Table
-40 C to +85 C
See Appendix B for information
MSL = 2a, Termination = e1
* I522 = HC-MOS TCXO, I521 = Clipped Sine TCXO, I722 = HC-MOS TCVCXO, I721 = Clipped Sine TCVCXO
Part Number Guide
Package and Output
I521 -
I522 -
I721 -
I722 -
Sample Part Number:
Operating Temperature
7 = 0 C to +50 C
1 = 0 C to +70 C
3 = -20 C to +70 C
2 = -40 C to +85 C
I521 - 1Q3 - 20.000
Supply Voltage
5 = 5.0 VDC
3 = 3.3 VDC
- 20.000 MHz
Frequency
Frequency Stability vs. Temperature
*O = 1.5 ppm
*P = 2.0 ppm
Q = 2.5 ppm
R = 3.0 ppm
J = 5.0 ppm
NOTE: A 0.01 µF bypass capacitor is recommended between Vcc (pin 4) and Gnd (pin 2) to minimize power supply noise.
* Not available for all temperature ranges. ** Frequency, supply, and load related parameters.
07/08
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ILSI America
Phone: 775-851-8880 • Fax: 775-851-8882• e-mail: e-mail@ilsiamerica.com • www.ilsiamerica.com
Specifications subject to change without notice
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