SiT1544

SiT1544 Preliminary Smallest Footprint (1.2mm2), Ultra-Low Power 1 Hz - 32.768 kHz Programmable Oscillator for Li+ Unregulated Battery Powered Applications TThhee SSmmaarrtt TTiimmiinngg CChhooiiccee Features  Factory programmable from 32.768 kHz down to 1 Hz  Supply voltage optimized for Li+ battery voltage: 2.7V to 4.3V  Smallest footprint in chip-scale (CSP): 1.5 x 0.8 mm  Pin-compatible 2.0 x 1.2 mm XTAL SMD package  Ultra-low power: 750 nA (typ)  Oscillator output eliminates external load caps  NanoDrive™ programmable output swing for lowest power  Internal filtering eliminates external Vdd bypass cap  <20 PPM initial stability  <100 PPM stability over -40°C to +85°C  Pb-free, RoHS and REACH compliant Applications  Wireless Mouse or Trackball  Wireless Keypads  Pulse-per-Second (pps) Timekeeping  RTC Reference Clock  Battery Management Timekeeping Electrical Characteristics Parameter Programmable Output Frequency Fr...