LMX2310U National Semiconductor Corporation, LMX2310U Datasheet
LMX2310U
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LMX2310U Summary of contents
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... Serial data is transferred into LMX2310/1/2/3U via a three- wire interface (Data, Enable, Clock) that can be directly interfaced with low voltage baseband processors. Supply voltage can range from 2.7V to 5.5V. LMX2310U features very low current consumption, typically 2 3.0V. The LMX2310/1/2/3U are manufactured using National’s 0.5µ ...
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Connection Diagram www.national.com 20-Pin Thin Chip Scale Package NS Package Number SLD20A 2 20043823 ...
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Pin Descriptions Pin Number Pin Name I — No Connect Charge Pump output. For connection GND — Analog ground INB 6 OSC — ...
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Pin Descriptions (Continued) Pin Number Pin Name Data GND µ www.national.com I/O Description — No Connect. I High impedance CMOS ...
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... P µC A Symbol Parameter I CC LMX2310U LMX2311U Power Supply l CC Current LMX2312U LMX2313U I Power-Down Current CC-PWDN RF PRESCALER LMX2310U LMX2311U Operating F IN Frequency LMX2312U LMX2313U Input Sensitivity Prescaler PHASE DETECTOR Fφ Phase Detector Frequency REFERENCE OSCILLATOR Operating Frequency, F OSC Reference Oscillator Input ...
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Electrical Characteristics < 3.0V, −40˚ µC A Symbol Parameter CHARGE PUMP ICPo- source ICPo- Charge Pump Output sink Current (Note 7) ICPo- source ICPo- sink ICPo- Charge Pump TRI-STATE tri Current ...
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... Note 11: Normalized Single-Side Band Phase Noise is defined as: L (Continued) < +85˚C unless specified otherwise. Conditions (Note 200 kHz φ MHz OSC V = 1.0 V OSC PP ICP = 25˚C A (Note 11) LMX2310U F = 2450 MHz 200 kHz φ MHz OSC V = 1.0 V OSC PP ICP = 25˚C A (Note 12) LMX2311U ...
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... Note 12: Phase Noise is measured using a reference evaluation board with a loop bandwidth of approximately 12 kHz. The phase noise specification is the composite average of 3 measurements made at frequency offsets of 2.0 kHz, 2.5 kHz and 3.0 kHz. Typical Performance Characteristics LMX2310U LMX2312U TRI-STATE www.national.com ...
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Typical Performance Characteristics (Continued) LMX231xU Charge Pump Sweeps 9 20043842 www.national.com ...
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... Typical Performance Characteristics Charge Pump Current Variation (See formula under Charge Pump Current Specification Definitions) www.national.com (Continued) Sink Vs Source Mismatch (See formula under Charge Pump Current Specification Definitions) 20043866 LMX2310U F Sensitivity vs Frequency at 3. 20043867 20043846 ...
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... Typical Performance Characteristics LMX2310U F LMX2311U F (Continued) Sensitivity vs Frequency at 5.5V in Sensitivity vs Frequency at 3. 20043847 20043848 www.national.com ...
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Typical Performance Characteristics www.national.com (Continued) LMX2311U F Sensitivity vs Frequency at 5.5V in LMX2312U F Sensitivity vs Frequency at 3. 20043849 20043850 ...
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Typical Performance Characteristics LMX2312U F LMX2313U F (Continued) Sensitivity vs Frequency at 5.5V in Sensitivity vs Frequency at 3. 20043851 20043852 www.national.com ...
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Typical Performance Characteristics www.national.com (Continued) LMX2313U F Sensitivity vs Frequency at 5.5V in LMX231XU OSC Sensitivity vs Frequency at 3. 20043853 20043854 ...
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Typical Performance Characteristics LMX231XU OSC LMX231xU OSC (Continued) Sensitivity vs Frequency at 5.5V in Input Impedance vs Frequency in 15 20043855 20043858 www.national.com ...
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Typical Performance Characteristics OSC BUFFER IN NORMAL OPERATION Imag- Real F inary |ZOSC | OSC IN ZOSC IN (MHz) ZOSC (Ω) IN (Ω) (Ω) 2 12900 −1500 13000 4 5200 −10900 12100 7 2400 −7500 ...
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Typical Performance Characteristics (Continued) LMX231xU F Input Impedance vs Frequency in V =3.0V 25˚ LMX231xU F Input Impedance vs Frequency in V =5.5V 25˚ 20043856 20043857 www.national.com ...
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Typical Performance Characteristics POWERED-UP Real Imaginary F | (MHz) (Ω) (Ω) (Ω) 100 452 −325 557 200 305 −278 413 300 225 −243 331 400 180 ...
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Charge Pump Measurement Definitions − ∆ sink current at VCP = sink current at VCP = ∆ sink current at VCP ...
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Serial Data Input Timing Notes: 1. Data shifted into register on Clock rising edge. 2. Data is shifted in MSB first. F Sensitivity Test Setup IN Notes: 1. LMX2310/1/2U Test Conditions: NA_CNTR = 16, NB_CNTR = 312 ...
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OSC Sensitivity Test Setup IN Notes: 1. Test Conditions: R_CNTR = 1000, FoLD2 = 1, FoLD1 = 0, FoLD0 = 1, PWDN = 0. 2. Sensitivity limit is reached when the frequency error of the divided RF input is greater ...
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Functional Description The basic phase-lock-loop (PLL) configuration consists of a high-stability crystal reference oscillator, a frequency synthe- sizer such as the National Semiconductor LMX2310/1/2/3U, a voltage controlled oscillator (VCO), and a passive loop filter. The frequency synthesizer includes a ...
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Functional Description 1.5 PHASE/FREQUENCY DETECTORS The phase/frequency detector is driven from the N and R COUNTER outputs. The maximum frequency at the phase detector inputs is 10 MHz. The phase detector outputs con- Phase Comparator and Internal Charge Pump ...
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Functional Description 1.9 Fastlock ™ OUTPUT The FL pin can be used as the Fastlock output. The FL pin can also be programmed as constant low, constant high (referenced constant high impedance, selectable CC through ...
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Power-Down The LMX2310/1/2/3U are power controlled through logical control of the CE pin in conjunction with programming of the PDWN and CPo_TRI bits. A truth table is provided that describes how the state of the CE pin, the PDWN ...
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Programming Description 3.2 R REGISTER The R register contains the R_CNTR control word and PD_POL, CPo_4X, CP_TRI, FoLD0, FoLD1 control bits. The detailed descriptions and programming information for each control word is discussed in the following sections. Register Most ...
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Programming Description 3.2.5 FoLD2,1,0 FoLD Output Truth Table The FoLD2, FoLD1 and FoLD0 are used to select which signal is routed to FoLD pin. T[14] R[21] FoLD2 FoLD1 ...
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Programming Description 3.3.3 B_CNTR[12:0] B COUNTER The NB_CNTR control word is used to program the B counter. The B counter is a 13-bit binary counter used in the programmable feedback divider. The B counter can be programmed to values ...
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... Physical Dimensions Order Number LMX2310U, LMX2311U, LMX2312U or LMX2313U For Tape and Reel (2500 Units Per Reel) Order Numbers: LMX2310USLDX, LMX2311USLDX, LMX2312USLDX, LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION ...