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LMX2541SQ2690E Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LMX2541SQ2690E Datasheet(HTML) 6 Page - National Semiconductor (TI) |
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6 / 40 page  Electrical Characteristics (3.15 V ≤ V CC ≤ 3.45 V, -40°C ≤ TA ≤ 85 °C; except as specified. Typical values are at Vcc = 3.3 V, 25 C.) Symbol Parameter Conditions Min Typ Max Units Current Consumption I CC Entire ChipPower Supply Current with all blocks enabled Default Power Mode (Note 5) VCO_DIV>1 170 204 mA VCO_DIV=1 130 156 I PLL Current for External VCO Mode (Note 6) RFoutEN = LOW 72 85 mA I DIV Current for Divider Only Mode VCO_DIV >1 Default Power Mode 84 102 mA I CCPD Power Down Current CE = 0 V, Device Initialized 100 250 µA Oscillator (Normal Mode Operation with XO=0) I IHOSC in Oscillator Input High Current for OSCin and OSCin* V IH = 2.75 V 300 µA I ILOSCin Oscillator Input Low Current for OSCin and OSCin* pins V IL = 0 -100 µA f OSCin Frequency Range Limited to ½ · f PD when the Oscillator doubler is enabled. 5 900 MHz dv OSCin Slew Rate Single-Ended Mode 150 V/µs v OSCin Oscillator Sensitivity Single-Ended 0.2 2.0 Vpp Differential 0.4 3.1 Oscillator (Crystal Mode with XO=1) f XTAL Crystal Frequency Range V IH = 2.75 V 5 20 MHz ESR XTAL Crystal Equivalent Series Resistance This a requirement for the crystal, not a characteristic of the LMX2541. 100 Ω P XTAL Power Dissipation in Crystal This requirement is for the crystal, not a characteristic of the LMX2541. TBD µW C OSCin Input Capacitance of OSCin 6 pF PLL f PD Phase Detector Frequency 104 MHz I CPout Charge Pump Output Current Magnitude CPG = 1X 100 µA CPG = 2X 200 CPG = 3X 300 ... ... CPG=32X 3200 I CPoutTRI CP TRI-STATE Current 0.4 V < V CPout < Vcc - 0.4 1 5 nA I CPoutMM Charge Pump Sink vs. Source Mismatch V CPout = Vcc / 2 T A = 25°C 3 10 % I CPoutV Charge Pump Current vs. CP Voltage Variation 0.4 V < V CPout < Vcc - 0.4 T A = 25°C 4 % I CPoutT CP Current vs. Temperature Variation V CPout = Vcc / 2 8 % LN(f) (Note 7) Normalized PLL 1/f Noise LN PLL_flicker(10 kHz) CPG = 1X -116 dBc/Hz CPG = 32X -124.5 Normalized PLL Noise Floor LN PLL_flat(1 Hz) CPG = 1X -220.8 dBc/Hz CPG = 32X -225.4 f ExtVCOin PLL Input Frequency RFout Buffer Enabled and VCO_DIV > 1 400 4000 MHz RFout Buffer Disabled and VCO_DIV = 1 400 6000 p ExtVCOin PLL Input Sensitivity f ExtVCOin ≤ 4 GHz -15 3 dBm f ExtVCOin > 4 GHz -5 3 www.national.com 6 |
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