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LMX2592

ACTIVE

9.8-GHz wideband frequency synthesizer with integrated VCO

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Data sheet

LMX2592

ACTIVE
Data sheet Order now

Product details

Integrated VCO Yes Output frequency (min) (MHz) 20 Output frequency (max) (MHz) 9800 Normalized PLL phase noise (dBc/Hz) -231 Current consumption (mA) 250 Features Integer-boundary spurs (IBS) removal, Integrated VCO, Phase adjustment, Wideband 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -126 Rating Catalog Operating temperature range (°C) -40 to 85 Lock time (µs) (typ) Loop BW dependent
Integrated VCO Yes Output frequency (min) (MHz) 20 Output frequency (max) (MHz) 9800 Normalized PLL phase noise (dBc/Hz) -231 Current consumption (mA) 250 Features Integer-boundary spurs (IBS) removal, Integrated VCO, Phase adjustment, Wideband 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -126 Rating Catalog Operating temperature range (°C) -40 to 85 Lock time (µs) (typ) Loop BW dependent
VQFN (RHA) 40 36 mm² 6 x 6
  • Output Frequency Range from 20 to 9800 MHz
  • Industry Leading Phase Noise Performance
    • VCO Phase Noise: –134.5 dBc/Hz at 1-MHz Offset for 6-GHz Output
    • Normalized PLL Noise Floor: –231 dBc/Hz
    • Normalized PLL Flicker Noise: –126 dBc/Hz
    • 49-fs RMS Jitter (12 kHz to 20 MHz) for 6 GHz Output
  • Input Clock Frequency Up to 1400 MHz
  • Phase Detector Frequency Up to 200 MHz, and Up to 400 MHz in Integer-N Mode
  • Supports Fractional-N and Integer-N Modes
  • Dual Differential Outputs
  • Innovative Solution to Reduce Spurs
  • Programmable Phase Adjustment
  • Programmable Charge Pump Current
  • Programmable Output Power Level
  • SPI or uWire (4-Wire Serial Interface)
  • Single Power Supply Operation: 3.3 V
  • Output Frequency Range from 20 to 9800 MHz
  • Industry Leading Phase Noise Performance
    • VCO Phase Noise: –134.5 dBc/Hz at 1-MHz Offset for 6-GHz Output
    • Normalized PLL Noise Floor: –231 dBc/Hz
    • Normalized PLL Flicker Noise: –126 dBc/Hz
    • 49-fs RMS Jitter (12 kHz to 20 MHz) for 6 GHz Output
  • Input Clock Frequency Up to 1400 MHz
  • Phase Detector Frequency Up to 200 MHz, and Up to 400 MHz in Integer-N Mode
  • Supports Fractional-N and Integer-N Modes
  • Dual Differential Outputs
  • Innovative Solution to Reduce Spurs
  • Programmable Phase Adjustment
  • Programmable Charge Pump Current
  • Programmable Output Power Level
  • SPI or uWire (4-Wire Serial Interface)
  • Single Power Supply Operation: 3.3 V

The LMX25 92 device is a low-noise, wideband RF PLL with integrated VCO that supports a frequency range from 20 MHz to 9.8 GHz. The device supports both fractional-N and integer-N modes, with a 32-bit fractional divider allowing fine frequency selection. Integrated noise of 49 fs for 6-GHz output makes it an ideal low-noise source. Combining best-in-class PLL and integrated VCO noise with integrated LDOs, this device removes the need for multiple discrete devices in high performance systems.

The device accepts input frequencies up to 1.4 GHz, which combined with frequency dividers and programmable low noise multiplier allows flexible frequency planning. The additional programmable low-noise multiplier lets users mitigate the impact of integer boundary spurs. In Fractional-N mode, the device can adjust the output phase by a 32-bit resolution. For applications that need fast frequency changes, the device supports a fast calibration option which takes less than 25 µs.

This performance is achieved by using single 3.3-V supply. It supports 2 flexible differential outputs that can be configured as single-ended outputs as well. Users can choose to program one output from the VCO (or doubler) and the second from the channel divider. When not being used, each output can be muted separately.

The LMX25 92 device is a low-noise, wideband RF PLL with integrated VCO that supports a frequency range from 20 MHz to 9.8 GHz. The device supports both fractional-N and integer-N modes, with a 32-bit fractional divider allowing fine frequency selection. Integrated noise of 49 fs for 6-GHz output makes it an ideal low-noise source. Combining best-in-class PLL and integrated VCO noise with integrated LDOs, this device removes the need for multiple discrete devices in high performance systems.

The device accepts input frequencies up to 1.4 GHz, which combined with frequency dividers and programmable low noise multiplier allows flexible frequency planning. The additional programmable low-noise multiplier lets users mitigate the impact of integer boundary spurs. In Fractional-N mode, the device can adjust the output phase by a 32-bit resolution. For applications that need fast frequency changes, the device supports a fast calibration option which takes less than 25 µs.

This performance is achieved by using single 3.3-V supply. It supports 2 flexible differential outputs that can be configured as single-ended outputs as well. Users can choose to program one output from the VCO (or doubler) and the second from the channel divider. When not being used, each output can be muted separately.
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Technical documentation

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Type Title Date
* Data sheet LMX2592 High Performance, Wideband PLLatinum™ RF Synthesizer With Integrated VCO datasheet (Rev. G) PDF | HTML 03 Aug 2022
More literature Clocking Optimization for RF Sampling Analog-to-Digital Converters (Rev. A) PDF | HTML 07 Apr 2021
Technical article Don’t let bad reference signals destroy the phase noise in your PLL/synthesizer 10 Jan 2017
Technical article Why phase noise matters in RF sampling converters 28 Nov 2016
Technical article A survival guide to scaling your PLL loop filter design 22 Nov 2016
Technical article Issues with jitter, phase noise, lock time or spurs? Check the loop-filter bandwidth of your PLL 06 Jun 2016
EVM User's guide LMX2592EVM User's Guide 18 Dec 2015

Design & development

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Evaluation board

LMX2592EVM — LMX2592EVM high-performance, wideband frequency RF synthesizer PLLATINUM™ integrated circuit

The LMX2592EVM evaluation module (EVM) is for the LMX2592 device. The LMX2592 device outputs very high frequency signals with industry-leading phase noise. The integrated voltage-controlled oscillator (VCO) allows minimal discrete external components to design. The printed circuit (...)

User guide: PDF
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Evaluation board

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Application software & framework

PLLATINUMSIM-SW — Texas Instruments PLLatinum Simulator Tool

PLLATINUMSIM-SW is a simulation tool that allows users to create detailed designs and simulations of our PLLatinum™ integrated circuits, which include the LMX series of phase-locked loops (PLLs) and synthesizers.
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Application software & framework

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Texas Instruments clocks and synthesizers (TICS) pro software is used to program the evaluation modules (EVMs) for product numbers with these prefixes: CDC, LMK and LMX. These products include phase-locked loops and voltage-controlled oscillators (PLL+VCO), synthesizers and clocking devices.
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Simulation model

LMX2582 IBIS Model (Rev. A)

SNAM199A.ZIP (44 KB) - IBIS Model
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Design tool

CLOCK-TREE-ARCHITECT — Clock tree architect programming software

Clock tree architect is a clock tree synthesis tool that streamlines your design process by generating clock tree solutions based on your system requirements. The tool pulls data from an extensive database of clocking products to generate a system-level multi-chip clocking solution.
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Reference designs

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Reference designs

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Reference designs

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