ITC clock oscillators are adopting TRs or fast Ics to meet the diverse electronic applications such as microprocessor, personal computer, notebook computer, facsimile, computer controlled devices, etc. Wherever high stability needs.
| Model | VCO-1 | VCO-2 | VCO-2 |
|---|---|---|---|
| Frequency range | 1.5MHz~25MHz | 1.5MHz~25MHz | 32.768KHz |
| Current consumption | 20mA max | 20mA max | 20mA max |
| Supply voltage | 5Vdc+/-5% | 5Vdc+/-5% | 5Vdc+/-5% |
| VoH | 2.4Vdc min | 2.4Vdc min | 2.4Vdc min |
| VoL | 0.4Vdc max | 0.4Vdc max | 0.4Vdc max |
| Symmetry at 1.4Vdc | 60/40% | 60/40% | 60/40% |
| Tr & Tf | 10nsec max | 10nsec max | 30nsec max |
| Operating temperature | 0 Celsius~50 Celsius | 0 Celsius~50 Celsius | 0 Celsius~50 Celsius |
| Freq. tolerance at 25 Celsius (RT) | +/-2PPM | +/-5PPM | +/-20PPM |
| Frequency adjustment (with interner trimmer) | +/-3PPM min | N/A | N/A |
| Freq. drift (reference to RT) | +/-10PPM max | +/-20PPM max. or +/-10PPM max | +/-20PPM max. or +/-10PPM max |
| Storage temperature | -20 Celsius~80 Celsius | -20 Celsius~80 Celsius | -20 Celsius~80 Celsius |
| Fan out | 2TTLS or 15PF (CMOS) max | 2TTLS or 15PF (CMOS) max | 2TTLS or 15PF (CMOS) max |
Specifications
- Mechanical and environmental specification:
- Terminal strength: 907.2g max. force per pendicular to top and bottom.
- Bend test: pins will withstand maximum bend of 90 degree reference to base for 2 bends.
- Solderability test: dipping test in solder (230 Celsius +/-5 Celsius) for 5 seconds.
- Vibration test: 10-55Hz, 0.762mm, sweep 1.0 minute, duration 2 hours.
- Temperature cycle, steps of cycle: at -55 Celsius, 30 minutes; at +25 Celsius, 10~15 minutes; at +85 Celsius, 30 minutes; at +25 Celsius, 10~15 minutes. Number of cycles 3 times.
- Shock test: temperature T(H) + 125 Celsius, T(L) -55 Celsius exposure time at temperature extremes 5 minutes. Number of cycles 3 times
- Humidity test: 85% relative humidity at 85 Celsius, 250 hours.
- Gross leak test: all units 100% leak tested in de-ionized H(2)O.
- Fine leak test: mass spectrometer leak rate less then 2 x 10^-8 atmos cc/sec, of helium.
- Solvent resistance: isopropyl alchole, tricholoroethane freon TMC.
- DUAL HXO series, HXO-2:
- Frequency 1 range: 8.0MHz~24.0MHz, 8.0MHz~24.0MHz, 24MHz~50.0MHz, 24MHz~50.0MHz
- Frequency 2 range: 8.0MHz~24.0MHz, 24MHz~50.0MHz, 8.0MHz~24.0MHz, 24MHz~50.0MHz
- Current consumption: 30mA max, 40mA max, 40mA max, 45mA max
- Supply voltage: 5Vdc +/-5% or 10%
- VoH: Vcc - 0.5Vdc min
- VoL: 0.5Vdc max
- Symmetry (at Vcc/2): 55/45%
- Tr & Tf (0.5~Vcc-0.5Vdc): 10nsec max
- Operating temperature: 0 Celsius~+70 Celsius
- Frequency stability: +/-100ppm or +/-50ppm
- Storage temp: -55 Celsius~+125 Celsius
- Output load: 50pF max
- TTL/CMOS DXO series, DXO-1, DXO-2, DXO-1H, DXO-2H, DXO-1C, DXO-2C, DXO-1HC, DXO-2HC:
- Frequency range: 1.000MHz~80.000MHz
- Current consumption, 1.000MHz~5MHz: 15mA max; 5MHz~24MHz: 20mA max; 24MHz~40MHz: 30mA max; 40MHz~50MHz: 40mA max; 50MHz~60MHz: 45mA max; 60MHz~80MHz: 60mA max;
- Supply voltage: 5Vdc +/-5% or 10%
- VoH: Vcc - 0.5Vdc min
- VoL: 0.4Vdc max
- Symmetry, 1.000MHz~50.000MHz: 55/45% at 1.4Vdc, 55/45% at Vcc/2; 50.000MHz~80.000MHz: 60/40% at 1.4Vdc, 60/40% at Vcc/2;
- Tr & Tf: 6nsec max. between 0.4, 2.4Vdc; 10nsec max. between 0.5, Vcc-0.5Vdc
- Operating temperature: 0 Celsius~+70 Celsius
- Frequency stability: +/-100ppm STD or +/-50ppm, +/-25ppm
- Storage temp: -55 Celsius~+125 Celsius
- Output load, 1.000MHz~50.000MHz: 50pF & 10 LSTTL max; 50.000MHz~80.000MHz: 30pF & 10 LSTTL max
- E/D control pin 1 voltage: 2.0Vdc min or open, enable; 0.8Vdc max. or GND, disable
- VCXO series, VCXO-1, VCXO-2:
- Frequency range: 1.8432MHz~30.000MHz
- Current consumption, 1.8432MHz~20.000MHz: 20mA max; 20.000MHz~30.000MHz: 30mA max
- Supply voltage: 5Vdc +/-5%
- VoH: Vcc - 0.5Vdc min
- VoL: 0.4Vdc max
- Symmetry: 60/40% at 1.4Vdc or at Vcc/2
- Tr & Tf: 6nsec max. between 0.4Vdc and 2.4Vdc; 10nsec max. between 0.5Vdc and Vcc-0.5Vdc
- Operating temperature: 10 Celsius~+70 Celsius
- Frequency stability, Vs. temperature: +/-20ppm max. /-10 Celsius~70 Celsius; Vs. supply voltage: +/-2ppm max. /5V +/-5%; aging: +/-5ppm max. /year
- Frequency control range, VCXO-1: +/-60ppm min / 2.5V+/-2V, +/-100ppm min / 2.5V+/-2.5V; VCXO-2: +/-100ppm min / 2.5V+/-2V, +/-150ppm min / 2.5V+/-2.5V
- Storage temperature: -55 Celsius~+125 Celsius
- Non-linearity: +/-10% max
- Output load: 50pF or 10 LSTTL max
- TCXO series, TCXO-1:
- Frequency range: 10.0MHz~24MHz
- Standard frequency: 12.8MHz
- Current consumption: 3mA max.
- Supply voltage: 5Vdc +/-5%
- Output level: 1Vpp min
- Load waveform: 10K ohm //10pF clipped sine wave
- Operating temperature: 30 Celsius~+75 Celsius
- Frequency stability, Vs. operation temperature: +/-2.5ppm max. /-30 Celsius~75 Celsius; Vs. supply voltage change: +/-0.3ppm at 5Vdc +/-5%; Vs. load change: +/-0.1ppm for 10K ohm +/-10% and 10pF +/-10%; aging/year: +/-0.5ppm at 25 Celsius
- Frequency adjustment (with internal trimmer): +/-3ppm min
- Storage temperature: -35 Celsius~+80 Celsius
Features
- ITC oscillators can be classified by it's characteristic as follows:
- DXO series: TTL & CMOS clock oscillator
- VCO series: TTL & CMOS high stable oscillator
- VCXO series: TTL & CMOS voltage controlled oscillator
- TCXO series: sine wave temperature compensated oscillator
- The last two letter of model name of DXO series have information of size or duty level:
- DXO-1: full size TTL duty
- DXO-1C: full size CMOS duty
- DXO-2: full size TTL duty with E/D function
- DXO-2C: full size CMOS duty with E/D function
- DXO-1H: half size TTL duty
- DXO-1HC: half size CMOS duty
- DXO-2H: half size TTL duty with E/D function
- DXO-2HC: half size CMOS duty with E/D function
Main Products
crystal unit, oscillator, crystal filter