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Product details

Parameters

Integrated VCO Yes Output frequency (Min) (MHz) 20 Output frequency (Max) (MHz) 9800 Normalized PLL phase noise (dBc/Hz) -231 Current consumption (mA) 250 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -126 open-in-new Find other RF PLLs & synthesizers

Package | Pins | Size

VQFN (RHA) 40 36 mm² 6 x 6 open-in-new Find other RF PLLs & synthesizers

Features

  • 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

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Description

The LMX2592 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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LMX2592 High Performance, Wideband PLLatinum™ RF Synthesizer With Integrated VCO datasheet (Rev. F) Nov. 16, 2017
Selection guides TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Technical articles Don’t let bad reference signals destroy the phase noise in your PLL/synthesizer Jan. 10, 2017
Technical articles Why phase noise matters in RF sampling converters Nov. 28, 2016
Technical articles A survival guide to scaling your PLL loop filter design Nov. 22, 2016
Technical articles Issues with jitter, phase noise, lock time or spurs? Check the loop-filter bandwidth of your PLL Jun. 06, 2016
Application notes Clocking Optimization for RF Sampling Analog-to-Digital Converters May 17, 2016
User guides LMX2592EVM User's Guide Dec. 18, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
299
Description

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 (...)

Features
  • Very-low phase noise output from 20 to 9800 MHz
  • Can lock inputs signals from 5 to 1400 MHz
  • Single 3.3-V power supply
  • Two differential outputs with programmable output power
  • A complete circuit for the synthesizer that is optimized and tested for performance and includes a USB programming module

Software development

APPLICATION SOFTWARE & FRAMEWORKS Download
Texas Instruments PLLatinum Simulator Tool
PLLATINUMSIM-SW The PLLATINUMSIM-SW simulator tool lets you create detailed designs and simulations of our PLLATINUM™ integrated circuits which include the LMX series of PLLs and synthesizers.
Features
  • Part selection based on current, cost, phase noise and package
  • Filter design up for passive and active filters up to 4th-order
  • Simulation of phase noise including PLL, fractional engine, voltage-controlled oscillator (VCO), input, dividers, and loop filter
  • Simulation of spurs including phase detector (...)
APPLICATION SOFTWARE & FRAMEWORKS Download
Texas Instruments Clocks and Synthesizers (TICS) Pro Software
TICSPRO-SW The TICS Pro software is used to program the evaluation modules (EVMs) for device numbers with these prefixes: CDC, LMK and LMX. These devices include PLLs and voltage-controlled oscillators (PLL+VCO), synthesizers and clocking devices.
Features
  • Program EVMs through the USB2ANY Interface Adaptor or onboard USB interface.
  • Export programming configurations for use in end application.

Design tools & simulation

SIMULATION MODELS Download
SNAM199A.ZIP (44 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
9.8GHz RF CW Signal Generator Using Integrated Synthesizer With Spur Reduction Reference Design
TIDA-00626 — This design is a 9.8-GHz wideband, low-phase noise, integrated continuous wave (CW) RF signal generator with versatile spur reduction technique. The output level can be programmed from -32 dBm to 14.5 dBm in 0.5-dB steps. This signal generator can be used as local oscillator for applications, such (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
9.8 GHz RF High Performance Synthesizer Operating From a Buck Converter Reference Design
TIDA-00885 — The TIDA-00885 design utilizes the LMX2592 a low-noise, wideband RF PLL with integrated VCO that can produce an output frequency range from 20 MHz to 9.8 GHz. The LMX2592 has excellent performance, integrated phase noise of 49fs for 6GHz output making it an ideal low noise source. There are two (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
RF-Sampling S-Band Radar Receiver Reference Design
TIDA-00814 — A direct RF sampling receiver approach to a radar system operating in S-band is demonstrated using the ADC32RF45, 3-Gsps, 14-bit analog to digital converter (ADC). RF sampling reduces the complexity of a system by removing down conversion and using a high sampling rate enables wider signal (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RHA) 40 View options

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