LMX2430 National Semiconductor Corporation, LMX2430 Datasheet
LMX2430
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LMX2430 Summary of contents
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... Supply voltages from 2.25V to 2.75V are supported . The LMX243x family features low current consumption: LMX2430 (3.0 GHz/ 0.8 GHz) — 2.8 mA/ 1.4 mA, LMX2433 (3.6 GHz/ 1.7 GHz) — 3.2 mA/ 2.0 mA, LMX2434 (5.0 GHz/ 2.5 GHz) — 4.6 mA/ 2 2.50V. The LMX243x devices are available in 20-Pin TSSOP and 20-Pin UTCSP surface mount plastic packages ...
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Functional Block Diagram Note: 1 (2) refers to Pin # 1 of the 20-Pin UTCSP and Pin # 2 of the 20-Pin TSSOP www.national.com 2 20053501 ...
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Connection Diagrams Ultra Thin Chip Scale Package (SLE) (Top View) Pin Descriptions Pin No. Pin No. Pin Name UTCSP TSSOP 1 2 GND 2 3 FinIF CPoutIF 5 6 ENosc 6 7 OSCout/ FLoutIF 7 ...
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Pin Descriptions (Continued) Pin No. Pin No. Pin Name UTCSP TSSOP 10 11 FLoutRF 11 12 GND 12 13 CPoutRF 13 14 GND 14 15 FinRF 15 16 FinRF * 16 17 Vcc CLK 19 ...
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... Ordering Information Model Temperature Range LMX2430TM -40˚C to +85˚C LMX2430TMX -40˚C to +85˚C LMX2430SLEX -40˚C to +85˚C LMX2433TM -40˚C to +85˚C LMX2433TMX -40˚C to +85˚C LMX2433SLEX -40˚C to +85˚C LMX2434TM -40˚C to +85˚C LMX2434TMX -40˚C to +85˚C LMX2434SLEX -40˚C to +85˚C ...
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... RF_P Bit = 0 RF_P Bit = 1 RF_P Bit = 0 RF_P Bit = 1 RF_P Bit = 8/9 (Note 16/17 (Note 32/33 (Note 4) LMX2430/33 2.25V ≤ Vcc ≤ 2.75V (Note 5) LMX2434 2.35V ≤ Vcc ≤ 2.75V (Note 5) 6 (Note 1) +2.25V to +2.75V ) −40˚C to +85˚C A ...
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... RF Charge Pump Output Current CPoutRF %V Magnitude Variation Vs Charge Pump CPoutRF Output Voltage I RF Charge Pump Output Current CPoutRF %T Magnitude Variation Vs Temperature A IF SYNTHESIZER PARAMETERS f IF Operating LMX2430 FinIF Frequency LMX2433 LMX2434 Divider Range Divider Range Phase Detector Frequency COMPIF p ...
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Electrical Characteristics Vcc = EN = 2.5V, −40˚C ≤ T ≤ +85˚C, unless otherwise specified A Symbol Parameter IF SYNTHESIZER PARAMETERS I IF Charge Pump Output TRI-STATE CPoutIF TRI Current I IF Charge Pump Output Sink Current CPoutIF %MIS Vs ...
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... Hz bandwidth. The offset frequency, f, must be chosen sufficiently smaller than the PLL’s loop bandwidth, yet large enough to avoid substantial phase noise contribution from the reference source the value selected for the feedback divider and f detector comparison frequency. Note 11: The synthesizer phase noise is measured with the LMX2430TM/LMX2430SLE Evaluation boards and the HP8566B Spectrum Analyzer. (Continued) Conditions ...
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Charge Pump Current Specification Definitions = Vcc − ∆ Charge Pump Sink Current at V CPout I2 = Charge Pump Sink Current Vcc//2 CPout = ∆ Charge Pump Sink Current at V CPout ...
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... Typical Performance Characteristics Sensitivity LMX2430 FinRF Input Power Vs Frequency Vcc = EN = 2.25V LMX2430 FinRF Input Power Vs Frequency Vcc = EN = 2.75V 11 20053592 20053593 www.national.com ...
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Typical Performance Characteristics Sensitivity (Continued) www.national.com LMX2433 FinRF Input Power Vs Frequency Vcc = EN = 2.25V LMX2433 FinRF Input Power Vs Frequency Vcc = EN = 2.75V 12 20053594 20053595 ...
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Typical Performance Characteristics Sensitivity (Continued) LMX2434 FinRF Input Power Vs Frequency Vcc = EN = 2.35V LMX2434 FinRF Input Power Vs Frequency Vcc = EN = 2.75V 13 20053596 20053597 www.national.com ...
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... Typical Performance Characteristics Sensitivity (Continued) www.national.com LMX2430 FinIF Input Power Vs Frequency Vcc = EN = 2.25V LMX2430 FinIF Input Power Vs Frequency Vcc = EN = 2.75V 14 20053598 20053599 ...
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Typical Performance Characteristics Sensitivity (Continued) LMX2433 FinIF Input Power Vs Frequency Vcc = EN = 2.25V LMX2433 FinIF Input Power Vs Frequency Vcc = EN = 2.75V 15 200535A0 200535A1 www.national.com ...
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Typical Performance Characteristics Sensitivity (Continued) www.national.com LMX2434 FinIF Input Power Vs Frequency Vcc = EN = 2.25V LMX2434 FinIF Input Power Vs Frequency Vcc = EN = 2.75V 16 200535A2 200535A3 ...
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Typical Performance Characteristics Sensitivity (Continued) LMX243x OSCin Input Voltage Vs Frequency Vcc = EN = 2.25V LMX243x OSCin Input Voltage Vs Frequency Vcc = EN = 2.75V 17 200535A4 200535A5 www.national.com ...
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Typical Performance Characteristics Charge Pump www.national.com LMX243x RF Charge Pump Sweeps Vcc = EN = 2.50V −40˚C ≤ T ≤ +85˚C A LMX243x IF Charge Pump Sweeps Vcc = EN = 2.50V −40˚C ≤ T ≤ +85˚ 200535A6 ...
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Typical Performance Characteristics Input Impedance LMX243x UTCSP FinRF Input Impedance Vcc = EN = 2.50V +25˚C A LMX243x UTCSP FinIF Input Impedance Vcc = EN = 2.50V +25˚C A LMX243x TSSOP FinRF Input Impedance Vcc = ...
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Typical Performance Characteristics Input Impedance (Continued) LMX243x UTCSP OSCin Input Impedance Vs Frequency LMX233xU TSSOP OSCin Input Impedance Vs Frequency www.national.com Vcc = EN = 2.50V T = +25˚C A Vcc = EN = 2.50V T = +25˚ ...
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LMX243x UTCSP FinRF Input Impedance Table Vcc = EN = 2.50V +25˚ |Γ| FinRF (MHz) 100 0.86 200 0.86 300 0.85 400 0.84 500 0.83 600 0.82 700 0.82 800 0.81 900 0.80 1000 0.80 1100 ...
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LMX243x UTCSP FinRF Input Impedance Table Vcc = EN = 2.50V +25˚ |Γ| FinRF (MHz) 4900 0.84 5000 0.84 5100 0.84 5200 0.84 5300 0.84 5400 0.84 5500 0.83 5600 0.83 5700 0.82 5800 0.82 5900 ...
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LMX243x TSSOP FinRF Input Impedance Table Vcc = EN = 2.50V +25˚ |Γ| FinRF (MHz) 100 0.86 200 0.85 300 0.84 400 0.83 500 0.82 600 0.82 700 0.82 800 0.82 900 0.81 1000 0.80 1100 ...
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LMX243x TSSOP FinRF Input Impedance Table Vcc = EN = 2.50V +25˚ |Γ| FinRF (MHz) 4900 0.75 5000 0.75 5100 0.76 5200 0.77 5300 0.78 5400 0.78 5500 0.76 5600 0.73 5700 0.71 5800 0.68 5900 ...
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LMX243x UTCSP FinIF Input Impedance Table Vcc = EN = 2.50V +25˚ |Γ| FinIF (MHz) 100 0.87 200 0.86 300 0.85 400 0.84 500 0.83 600 0.83 700 0.82 800 0.81 900 0.80 1000 0.79 1100 ...
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LMX243x TSSOP FinIF Input Impedance Table Vcc = EN = 2.50V +25˚ |Γ| FinIF (MHz) 100 0.87 200 0.86 300 0.85 400 0.84 500 0.84 600 0.83 700 0.83 800 0.82 900 0.81 1000 0.80 1100 ...
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LMX243x UTCSP OSCin Input Impedance Table Vcc = EN = 2.50V +25˚ OSCin (MHz) Re {ZOSCin} Im {ZOSCin} (Ω) 5.0 5032.01 7.5 2529.17 10.0 1412.10 12.5 1051.18 15.0 710.63 17.5 545.87 20.0 442.32 22.5 314.15 25.0 ...
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LMX243x TSSOP OSCin Input Impedance Table Vcc = EN = 2.50V +25˚ OSCin (MHz) Re {ZOSCin} (Ω) 5.0 1111.30 7.5 628.81 10.0 359.99 12.5 284.12 15.0 203.53 17.5 134.32 20.0 109.85 22.5 80.56 25.0 69.37 27.5 ...
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... The block diagram above illustrates the setup required to measure the LMX243x device’s RF charge pump sink cur- rent. The same setup is used for the LMX2430TM Evaluation Board. The purpose of this test is to assess the functionality of the RF charge pump. The IF charge pump is evaluated in the same way ...
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... OSCin pins are all tied to Vcc. The N value is typically set to 10000 in CodeLoader, i.e. RF_B word = 156 and RF_A word = 16 for RF_P bit = 0 (LMX2434) or RF_P bit = 1 (LMX2430 and LMX2433). The feedback divider output is routed to the Ftest/LD pin by selecting the RF_N/2 Fre- quency word (MUX[3:0] word = 15) in CodeLoader. A Uni- versal Counter is connected to the Ftest/LD pin and used to monitor the output frequency of the feedback divider ...
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... The block diagram above illustrates the setup required to measure the LMX243x device’s OSCin buffer sensitivity level. The same setup is used for the LMX2430TM Evalua- tion Board. This setup is similar to the FinRF sensitivity setup except that the signal generator is now connected to the OSCin pin and both Fin pins are tied to Vcc. The 51Ω ...
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... LMX243x FinRF Input Impedance Test Setup The block diagram above illustrates the setup required to measure the LMX243x device’s RF input impedance. The same setup is used for the LMX2430TM Evaluation Board. Measuring the device’s input impedance facilitates the de- sign of appropriate matching networks to match the PLL to ...
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LMX243x Serial Data Input Timing Notes: 1. DATA is clocked into the 24-bit shift register on the rising edge of CLK 2. The MSB of DATA is shifted in first. 33 20053510 www.national.com ...
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... The LMX2434 RF_A counter is a 5-bit swallow counter, programmable from 0 to 31. The LMX243x IF_A counter is a 4-bit swallow counter, programmable from 0 to 15. For both the LMX2430 and LMX2433, the RF_B counter is a 15-bit binary counter, programmable from 3 to 32767. The LMX2434 RF_B counter is a 14-bit binary counter, programmable from 3 to 16383 ...
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Functional Description 1.5.1 Phase Comparator and Internal Charge Pump Characteristics Notes: 1. The minimum width of the pump-up and pump-down current pulses occur at the CPoutRF or CPoutIF pins when the loop is phase locked. 2. The diagram assumes ...
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Functional Description 1.8.3 Digital Filtered Lock Detect Output A digital filtered lock detect status generated from the phase detector is also available on the Ftest/LD output pin if se- lected. The lock detect digital filter compares the difference bewteen ...
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Functional Description 1.8.4 Reference Divider and Feedback Divider Output The outputs of the various N and R dividers can be moni- tored by selecting the appropriate Ftest/LD word. This is essential when performing OSCin or Fin sensitivity measure- ments. ...
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... DATA[20:0] FIELD RF_R[14:0] LMX2430/33 RF_B[14:0] LMX2434 RF_B[13: IF_R[14:0] IF_B[13: LSB LMX2430/33 RF_A[3:0] LMX2434 RF_A[4:0] RF_TOC[11:0] IF_A[3:0] IF_TOC[11: ADDRESS [2:0] FIELD ...
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Programming Description 2.4 R0 REGISTER The R0 register contains the RF_R, RF_CPP, RF_CPG, RF_CPT, and RF_RST control words, in addition to two of the four bits that compose the MUX control word. The detailed descriptions and programming information for ...
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... RF_A[3:0] - LMX2430/33 RF Synthesizer Swallow Counter (A Counter) (R1[6:3]) The RF_A control word is used to setup the RF synthesizer’s A counter. For both the LMX2430 and LMX2433, the A counter is a 4-bit swallow counter used in the programmable feedback divider. The RF_A control word can be programmed to values ranging from ...
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... RF_B[14:0] - LMX2430/33 RF Synthesizer Programmable Binary Counter (B Counter) (R1[21:7]) The RF_B control word is used to setup the RF synthesizer’s B counter. For both the LMX2430 and LMX2433, the B counter is a 15-bit programmable binary counter used in the programmable feedback divider. The RF_B control word can be programmed to values ranging from 3 to 32767 ...
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Programming Description 2.5.4 RF_PD - RF Synthesizer Powerdown (R1[23]) The RF_PD bit is used to switch the RF PLL between a powered up and powered down mode. Furthermore, the RF_PD bit operates in conjuction with the RF_CPT bit to ...
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Programming Description 2.7 R3 REGISTER The R3 register contains the IF_R, IF_CPP, IF_CPG, IF_CPT, and IF_RST control words, in addition to two of the four bits that compose the MUX control word. The detailed descriptions and programming information for ...
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Programming Description 2.7.3 IF_CPG - IF Synthesizer Charge Pump Current Gain (R3[19]) The IF_CPG bit controls the IF synthesizer’s charge pump gain. Two gain levels are available. Control Bit Register Location IF_CPG 2.7.4 IF_CPT - IF Synthesizer Charge Pump ...
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Programming Description 2.8.2 IF_B[13: Synthesizer Programmable Binary Counter (B Counter) (R4[20:7]) The IF_B control word is used to setup the IF synthesizer’s B counter. The B counter is a 14-bit programmable binary counter used in the programmable ...
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Programming Description 2.9 R5 REGISTER The R5 Register contains the IF_TOC control word. The IF_TOC is used to setup the IF syhnthesizer’s Fastlock circuitry. The IF_TOC is a 12-bit binary counter programmable from 0 to 4095. Reg 23 22 ...
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Programming Description 2.10 MUX[3:0] - MULTIFUNCTION OUTPUT SELECT (R3[23:22]:R0[23:22]) The MUX control word is used to determine which signal is routed to the Ftest/LD pin. MUX[3: ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 20-Pin Ultra Thin Chip Scale Package (UTCSP) NS Package Number SLE20A 48 ...
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