SiT1421B - Active Resonator Drop-In Replacement
Pin Symbol 1 XIN/VDD VDD Power 2 GND Power 3 XOUT Output 4 GND Power Functionality Connect to µC GPIO pin XTAL1 set High via firmware[3] Electrical ground CLK output; connect to µC XTAL2 pin (refer to Figure 18 in Application Note section) Electrical GND Top View GND 4 3 XOUT/CLK
SiT1421B Features
* No load capacitors required
* No motional series resistance (ESR) compensation
* No negative resistance testing
* Guaranteed oscillator startup under all conditions
* One active resonator can drive up to two clock inputs
* All-inclusive frequency stability as low as ±20 ppm
