OVERVIEW
The CF5073 series are VCXO ICs with built-in varicap diode. They use a recently developed negative-resistance switching oscillation circuit, at oscillation startup and during normal oscillation, for both good oscillation startup characteristics and wide pullrange. Furthermore, it employs a CMOS process varicap diode, and also features all the necessary VCXO structure circuit components on a single chip, forming a VCXO module with just the connection of an external crystal.

FEATURES
■ 3.0 to 3.6V supply voltage range
■ 10MHz to 60MHz operating frequency (varies with version)
■ Uses negative-resistance switching function
■ Varicap diode built-in
■ Frequency divider built-in (varies with version: fO, fO/2, fO/4, fO/8, fO/16, fO/32)
■ CMOS output level
■ 50 ± 10% output duty
■ 6mA (min) output drive capability
■ 15pF output load capacitance CL
■ Standby function (high impedance in standby mode)
■ Chip form (CF5073××)

APPLICATIONS
■ VCXO modules
■ Communications application
■ Networking application
■ Broadcasting application