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1 / 16 page © Semiconductor Components Industries, LLC, 2007 April, 2007 − Rev. 7 1 Publication Order Number: MC100EL1648/D MC100EL1648 5 VECL Voltage Controlled Oscillator Amplifier Description The MC100EL1648 is a voltage controlled oscillator amplifier that 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 (VCO). 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 that include electronic test equipment, and digital high−speed telecommunications. The MC100EL1648 is based on the VCO 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 emitter resistor, RE, with a nominal value of 510 W. 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 (3.0 pF). If the user needs to fanout the signal, an ECL buffer such as the EL16 (EL11, EL14) type Line Receiver/Driver should be used. Features • Typical Operating Frequency Up to 1100 MHz • Low−Power 19 mA at 5.0 Vdc Power Supply • PECL Mode Operating Range: VCC = 4.2 V to 5.5 V with VEE = 0 V • NECL Mode Operating Range: VCC = 0 V with VEE = −4.2 V to −5.5 V • Input Capacitance = 6.0 pF (TYP) • Pb−Free Packages are Available NOTE: The MC100EL1648 is NOT useable as a crystal oscillator. VEE VCC VCC VEE OUTPUT AGC BIAS POINT TANK EXTERNAL TANK CIRCUIT Figure 1. Logic Diagram MARKING DIAGRAMS* SOEIAJ−14 M SUFFIX CASE 965 1 14 14 1 *For additional marking information, refer to Application Note AND8002/D. SOIC−8 D SUFFIX CASE 751 TSSOP−8 DT SUFFIX CASE 948R http://onsemi.com See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. ORDERING INFORMATION KEL1648 ALYWG 1648 ALYW G G 1 8 1 8 1 8 K1648 ALYW G 1 8 DFN8 MN SUFFIX CASE 506AA 14 A = Assembly Location L = Wafer Lot Y = Year W = Work Week M = Date Code G or G = Pb−Free Package (Note: Microdot may be in either location) |
Số phần tương tự - MC100EL1648DR2 |
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Mô tả tương tự - MC100EL1648DR2 |
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