- Device Name VC-TCXO
- Model Name DSA321SDA
- Nominal Frequency 20.000 MHz
- Mass 0.03g max
- Spec. No. :1XTV20000CDA
Recommended Operating Conditions
Supply Voltage: VCC= +3.3V
Load Impedance (resistance part) LOAD_R: 9 10 11 kΩ
(parallel capacitance) LOAD_C: 9 10 11 pF
Control Voltage Range VCONT: +0.5 ~ +2.5 V(@1.5V)
Operating Temperature Range:T_OPR = -40 ~ +85 °C
Electrical Characteristics
(TA=-40~+85°C, LOAD_R//C=10kΩ//10pF, VCC=+3.3V, VCONT=+1.5V, unless otherwise noted)
Current Consumption :- +1.5 mA
Output Level : 0.8 min. Clipped sine wave (DC-coupled)
Symmetry GND level (DC cut): 40/60%min; 60/40%min.
Frequency Stability
1.Tolerance After 2 times reflow;Ref. to Nominal Frequency
±1.5 ppm max.
TA=-30~+85°C Ref. to Frequency (TA=+25°C)
±0.5 ppm max.
2.vs Temperature;TA=-40~-30°C Ref. to Frequency (TA=+25°C)
±1.0 ppm max.
3.vs Supply Voltage VCC=+3.3V±5%
±0.2 ppm max.
4.vs Load Variation LOAD_R//C=(10kΩ//10pF)±10%
±0.2 ppm max.
5.vs Aging TA=Room ambient: ±1.0 ppm/year
Start Up Time
@90% of final Vout level: 2.0 ms max.
Frequency Control
- Control Range VCONT=+0.5V~+2.5V(Ref.+1.5V) : ±9~- ±15 ppm
Positive slope (Frequency becomes high in proportion to frequency control voltage.)
- Input Resistance 500 kΩ min.
SSB Phase Noise
Relative to f0 level offset 1kHz: 130 dBc/Hz max.
Measurement Circuit
