OVERVIEW

The CF5018 series are crystal oscillator ICs that operate from 2.5V. Devices are available that provide 3rd overtone oscillation in the range 30MHz to 80MHz. They are optimized for 2.5V operation, resulting in stable oscillator startup characteristics and output duty stability. They feature a large reduction in chip surface area compared to existing devices, making possible the construction of small-sized crystal oscillator.

FEATURES

■ 2.25 to 2.75V operating supply voltage range

■ 30MHz to 80MHz oscillation frequency range (varies with version)

■ – 40 to 85°C operating temperature range

■ Oscillation capacitors CG, CD built-in

■ Inverter amplifier feedback resistor built-in

■ Standby function

• High impedance in standby mode, oscillator stops

■ Low standby current

• Power-saving pull-up resistor built-in

■ fO output frequency (oscillation frequency)

■ 8mA output drive capability (VDD = 2.25V)

■ CMOS output duty level (1/2VDD)

■ 50 ± 5 output duty (at 1/2VDD)

■ 30pF output load

■ Molybdenum-gate CMOS process

■ Chip form (CF5018AL×)