100 MHz fixed-frequency oscillator for timing trees
The Texas Instruments LMK61A2-100M00SIAT is a 100 MHz clock oscillator in a 6-SMD module, packaged as a 6-QFM (7x5 mm). It operates from a 3.135 V to 3.465 V supply and draws 152 mA typical.
Supply tolerance and current draw — what they mean for the rail
The 3.135 V to 3.465 V supply range is a tight ±5 % window around the nominal 3.3 V rail. A switching regulator with 1 % set-point accuracy and 50 mV ripple stays inside this band; a poorly regulated LDO or a rail shared with a high-current digital load that droops below 3.135 V will pull the oscillator out of spec. At 152 mA supply current, the oscillator's load on the 3.3 V rail is modest — about 0.5 W dissipation in the 7x5 mm QFM package.