LMX2541

The LMX2541 is an ultra low noise frequency synthesizer which integrates a high performance delta-sigma fractional N PLL, a VCO with fully integrated tank circuit, and an optional frequency divider.
 
Features of the LMX2541 are:(1)very low RMS noise and spurs;(2)ultra low-noise integrated VCO;(3)external VCO option (internal VCO bypassed);(4)VCO frequency divider 1 to 63 (all values);(5)programmable output power;(5)up to 104 MHz phase detector frequency;(6)integrated low-noise LDOs;(7)programmable charge pump output;(8)partially integrated loop filter;(9)digital frequency shift keying (FSK) modulation pin;(10)integrated reference crystal oscillator circuit;(11)hardware and software power down;(12)fastlock mode and VCO-based cycle slip reduction;(13)analog and digital lock detect;(14)1.6 V logic compatibility.

The absolute maximum ratings of the LMX2541 can be summarized as:(1):the parameter is power supply voltage,the symbol is VCC,the rating is -0.3 to 3.6,the unit is V;(2):the parameter is input voltage to pins other than Vcc pins,the symbol is VIN,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 .