CF5019

CF5019 series High-Frequency, 3rd Overtone Crystal Oscillator Module ICs www.datasheet4u.com OVERVIEW The CF5019 series are high-frequency, 3rd overtone crystal oscillator module ICs. They incorporate an oscillator circuit and an output buffer that operate at high frequency on a single chip. The oscillator circuit employs CMOS inverters and a built-in damping resistor RD, reducing the crystal current compared with existing devices. The damping resistor RD is fabricated using NPC’s unique high-precision thin-film resistor technology, which suppresses oscillator characteristic variations due to changes in temperature and voltage to a minimum. The CF5019 series can be utilized to construct stable, high-frequency, 3rd overtone crystal oscillators. FEATURES I I I I I I RD built-in to reduce crystal current in the oscillator circuit 2.25 to 3.6V operating supply voltage range Recommended operating frequency range (varies with version) 2.5V operation: 60 to 155MHz 3.0V operation: 60 to 170MHz – 40 to 85°C operating temperature range Oscillator capacitors with excellent frequency response built-in Feedback resistors with good temperature characteristics built-in I I I I I I I I Standby function High impedance in standby mode, oscillator stops Low standby current Power-saving pull-up resistor built-in Oscillation detector function CMOS output duty level (1/2VDD) 50 ± 5% output duty (at 1/2VDD) 30pF output load (3.3V operation) Molybdenum-gate CMOS process Chip form (C...