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LMX2485QSQX bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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LMX2485QSQX bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 50 page LMX2485Q-Q1 www.ti.com SNOSCP7A – MARCH 2013 – REVISED JANUARY 2016 6.6 Electrical Characteristics over operating free-air temperature range (unless otherwise noted). (VCC = 3V; -40°C ≤ TA ≤ +105°C unless otherwise specified). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Icc PARAMETERS IF PLL OFF Power supply current, RF ICCRF RF PLL ON 3.3 mA synthesizer Charge Pump TRI-STATE IF PLL ON Power supply current, IF ICCIF RF PLL OFF 1.7 mA synthesizer Charge Pump TRI-STATE IF PLL ON Power supply current, entire ICCTOTAL RF PLL ON 5 mA synthesizer Charge Pump TRI-STATE CE = ENOSC = 0V ICCPD Power-down current 1 10 µA CLK, DATA, LE = 0V RF SYNTHESIZER PARAMETERS RF_P = 8 500 2000 fFinRF Operating frequency(1) MHz RF_P = 16 500 3100 pFinRF Input sensitivity -15 0 dBm fPD Phase detector frequency(2) 50 MHz RF_CPG = 0 95 VCPoutRF = VCC/2 RF_CPG = 1 190 RF charge pump source VCPoutRF = VCC/2 ICPoutRFSRCE µA current(3) ... ... RF_CPG = 15 1520 VCPoutRF = VCC/2 RF_CPG = 0 –95 VCPoutRF = VCC/2 RF_CPG = 1 –190 VCPoutRF = VCC/2 ICPoutRFSINK RF charge pump sink current(3) µA ... ... RF_CPG = 15 –1520 VCPoutRF = VCC/2 RF charge pump TRI-STATE ICPoutRFTRI 0.5 ≤ VCPoutRF ≤ VCC – 0.5 2 10 nA current magnitude RF_CPG > 2 3% 10% Magnitude of RF CP sink vs VCPoutRF = VCC/2 | ICPoutRF%MIS | CP source mismatch TA = 25°C RF_CPG ≤ 2 3% 13% Magnitude of RF CP current vs | ICPoutRF%T | VCPoutRF = VCC/2 4% temperature IF SYNTHESIZER PARAMETERS fFinIF Operating Frequency 75 800 MHz pFinIF IF Input Sensitivity -10 5 dBm fCOMP Phase Detector Frequency 10 MHz IF Charge Pump Source ICPoutIFSRCE VCPoutIF = VCC/2 3.5 mA Current ICPoutIFSINK IF Charge Pump Sink Current VCPoutIF = VCC/2 –3.5 mA IF Charge Pump TRI-STATE ICPoutIFTRI 0.5 ≤ VCPoutIF ≤ VCC RF -0.5 2 10 nA Current Magnitude Magnitude of IF CP sink vs CP VCPoutIF = VCC/2 | ICPoutIF%MIS | 1% 8% source mismatch TA = 25°C (1) A slew rate of at least 100 V/uS is recommended for frequencies below 500 MHz for optimal performance. (2) For Phase Detector Frequencies above 20 MHz, Cycle Slip Reduction (CSR) may be required. Legal divide ratios are also required. (3) Refer to table in Table 25 for complete listing of charge pump currents. Copyright © 2013–2016, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LMX2485Q-Q1 |
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