MC100EL1648: Voltage Controlled Oscillator, ECL, 5.0 V
Product Description
The MC100EL1648 requires an external parallel tank circuit consisting of the inductor (L) and capacitor (C). A varactor diode may be incorporated into the tank circuit to provide a voltage variable input for the oscillator (V CO). This device may also be used in many other applications requiring a fixed frequency clock. The MC100EL1648 is ideal in applications requiring a local oscillator. Systems include electronic test equipment and digital high-speed telecommunications. The MC100EL1648 is based on the V CO circuit topology of the MC1648. The MC100EL1648 uses advanced bipolar process technology which results in a design which can operate at an extended frequency range. The ECL output circuitry of the MC100EL1648 is not a traditional open emitter output structure and instead has an on-chip termination resistor with a nominal value of 510 ohms. This facilitates direct ac-coupling of the output signal into a transmission line. Because of this output configuration, an external pull-down resistor is not required to provide the output with a dc current path. This output is intended to drive one ECL load. If the user needs to fanout the signal, an ECL buffer such as the MC10EL16 Line Receiver/Driver should be used NOTE: The MC100EL1648 is NOT useable as a crystal oscillator.
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Typical Operating Frequency Up to 1100 MHz
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Low-Power 19 mA at 5.0 Vdc Power Supply
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Phase Noise -90 dBc/Hz at 25 kHz Typical
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ESD Protection: >2 KV HBM, >100 V MM
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PECL Mode Operating Range: VCC= 5.0 V with VEE= 0 V
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NECL Mode Operating Range: VCC= 0 V with VEE= -5.2 V
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Input Capacitance= 6.0 pF (TYP)
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Meets or Exceeds JEDEC Spec EIA/JESD78 IC Latchup Test
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Maximum Series Resistance for L (External Inductance)= 50 W (TYP)
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Moisture Sensitivity Level 1. For Additional Information, see Application Note AND8003/D
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