VCC1-1535-125M000000 CMOS Crystal Oscillator VCC1 Description Vectrons VCC1 Crystal Oscillator (XO) is a quartz stabilized square wave generator with a CMOS output. The VCC1 uses a third overtone crystal resulting in very low jitter performance, and a monolithic IC which improves reliability and reduces cost. Features Applications Ultra Low Jitter, Fundamental Crystal Design CMOS Output Crystal Oscillator 125.000MHz Output Frequency 3.3V Operation Output Disable Feature 25ppm stability, -40/85C Small Industry Standard Package, 5x7mm Product is compliant to RoHS directive and fully compatible with lead free assembly Block Diagram V Output DD Crystal Oscillator Gnd E/D Vectron International 267 Lowell Road, Hudson, NH 03051 Tel: 1-88-VECTRON-1 Performance Speci cations Table 1. Electrical Performance Parameter Symbol Min Typical Maximum Units Supply 1 Voltage V 2.97 3.3 3.63 V DD Maximum Voltage -0.5 5.0 V 2 Current I 50 mA DD Current, Output Disabled 30 uA Frequency 3 Frequency f 125.000 MHz N 3 Stability 25 ppm Outputs 2 Output Logic Levels Output Logic High V 0.9*V V OH DD Output Logic Low V 0.1*V V OL DD Output Logic High Drive I 8 mA OH Output Logic Low Drive I 8 mA OL Load I 15 pF OUT 2 Output Rise /Fall Time t /t 2 ns R F Output Leakage, Output Disabled I 10 uA Z 2,4 Duty Cycle 45 50 55 % 5 RMS Jitter, 12 kHz - 5 MHz BW 100 fs Enable/Disable 6 Output Enable/Disable Output Enable V 2.0 V IH Output Disable V 0.5 V IL Disable time t 100 ns D Enable Internal Pull-Up Resistor 100 Kohm Start-Up Time t 10 ms SU Operating Temperature T -40 85 C OP 1 The power supply should have by-pass capacitors as close to the supply and to ground as possible, for example 0.1 and 0.01uF 2 Parameters are tested with production test circuit below, Figure 1. 3 Includes initial accuracy, operating temperature, supply voltage, shock and vibration (not under operation) and 15 years aging. 4 Duty Cycle is measured as On Time/Period (Fig 2). 5 Measured using an Agilent E5052, AC coupled (passive connection). 6 Outputs will be Enabled if Enable/Disable is left open. Vectron International 267 Lowell Road, Hudson, NH 03051 Tel: 1-88-VECTRON-1