LMX2487E

The LMX2487E is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. It is fabricated using National Semiconductor's advanced process.With delta-sigma architecture, fractional spurs at lower offset frequencies are pushed to higher frequencies outside the loop bandwidth.
 
Features of the LMX2487E are:(1)quadruple modulus prescalers for lower divide ratios;(2)advanced delta sigma fractional compensation;(3)features for improved lock times and programming;(4)wide operating range;(5)useful features.Applications of the LMX2487E are:(1)cellular phones and base stations;(2)direct digital modulation applications;(3)satellite and cable TV tuners;(4)WLAN standards.

The absolute maximum ratings of the LMX2487E can be summarized as:(1):the parameter is power supply voltage,the symbol is VCC,the rating is -0.3 to +4.25,the unit is V;(2):the parameter is voltage on any pin with GND = 0V,the symbol is VI,the rating is -0.3 to (Vcc+0.3),the unit is V;(3):the parameter is storage temperature range,the symbol is Ts,the rating is -65 to 150,the unit is ;(4):the parameter is lead temperature (solder 4 s),the symbol is TL,the rating is +260,the unit is .