SiT1533 is an ultra-small, ultra-low-power 32.768 kHz oscillator optimized for mobile and other battery-powered applications. When used with SiTime pad layouts (SPL), its pins and package are compatible with existing 2012 XTALs. Unlike the standard oscillator. SiT1533's NanoDrive features programmable output voltage swing and reduced power. 1.2V to 3.63V Operating supply voltage range makes it an ideal solution for mobile applications.