STABILITY ±8 ppm ~ ±50 ppm (see FREQUENCY STABILITY VS. TEMPERATURE table) SHUNT CAPACITANCE (C 0) 2 pF max. DRIVE LEVEL 100 μW typ. / 200 μW max. ( 500 μW available on request) AGING ±2 ppm per year standard (±10 ppm max. after 10 years available on request) >500 MΩ DC/100V ±10% INSULATION RESISTANCE STORAGE