NJU6221 Series

1.8V Operating Voltage Fundamental Quartz Crystal Oscillator IC with Input Tolerant Function

Description

The NJU6221 series is a C-MOS quartz crystal oscillator IC realized excellent frequency stability for fundamental (up to 60MHz) oscillation, and consists of an oscillation amplifier, a 6-stage divider, a 3-state output buffer, a built-in LDO and a input tolerant circuit. The operating voltage is from 1.62V to 3.63V, and the LDO holds down the characteristic change of the oscillation amplifier for operating voltage variation, and has been stabilized oscillation frequency. (±1ppm@V_DD±10%) The 6-stage divider generates only one frequency selected at the factory shipment of f₀, f₀/2, f₀/4, f₀/8, f₀/16, f₀/32 and f₀/64 internal circuits is output. The 3-state output buffer is C-MOS compatible. The input tolerant circuit ensures that 0 to 3.63 V can be applied to CONT terminal without regard to the supply voltage. The oscillation stopping current is very low stand-by mode, therefore, it is suitable for the portable items of the communication equipment and the like.