NJM2555
NJM2555 is 622MHz VCXO IC manufactured by New Japan Radio.
DESCRIPTION s PACKAGE OUTLINE
The NJM2555 is a 622.08MHz VCXO (Voltage Controlled Crystal
Oscillator) IC designed for optical fiber telemunication systems, using
New JRC superior Bipolar technology, which consists of an oscillation amplifier, a variable capacitor diode, a quadruple (x4) frequency circuit, high pass filter, and limiter amplifier. The NJM2555 generate x4 frequency to add the only 155.52MHz crystal and LC filter, and the output is differential
LVPECL equivalent. The remended input crystal frequency is from 120 NJM2555C-C NJM2555V to 160 MHz. The jitter performance and phase noise is very low based on excellent oscillation circuit. This can be applied to optical munication, especially the WDM system. s FEATURES q Operating Voltage q Frequency range of Crystal q Output Frequency Range q Output Level q A Variable Capacitor on chip q Bipolar Technology q Package
+3.0V to +3.6V 155.52 MHz typ. (120 to 160 MHz) 622.08 MHz typ....
