LMX2492

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500MHz to 14GHz Wideband, Low Noise Fractional N PLL With Ramp/Chirp Generation

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Product details

Parameters

Integrated VCO No Output frequency (Min) (MHz) 500 Output frequency (Max) (MHz) 14000 Normalized PLL phase noise (dBc/Hz) -227 Current consumption (mA) 60 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -120 open-in-new Find other RF PLLs & synthesizers

Package | Pins | Size

WQFN (RTW) 24 16 mm² 4 x 4 open-in-new Find other RF PLLs & synthesizers

Features

  • –227 dBc/Hz Normalized PLL Noise
  • 500 MHz – 14 GHz Wideband PLL
  • 3.15 – 5.25 V Charge Pump PLL Supply
  • Versatile Ramp / Chirp Generation
  • 200 MHz Max Phase Detector Frequency
  • FSK / PSK Modulation Pin
  • Digital Lock Detect
  • Single 3.3 V Supply Capability
  • Automotive 125°C Q100 Grade 1 Qualification
  • Non-Automotive (LMX2492) Option
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Description

The LMX2492/92-Q1 is a low noise 14 GHz wideband delta-sigma fractional N PLL with ramp and chirp generation. It consists of a phase frequency detector, programmable charge pump, and high frequency input for the external VCO. The LMX2492/92-Q1 supports a broad and flexible class of ramping capabilities, including FSK, PSK, and configurable piecewise linear FM modulation profiles of up to 8 segments. It supports fine PLL resolution and fast ramp with up to a 200 MHz phase detector rate. The LMX2492/92-Q1 allows any of its registers to be read back. The LMX2492/92-Q1 can operate with a single 3.3 V supply. Moreover, supporting up to 5.25 V charge pump can eliminate the need of external amplifier, leading to a simpler solution with improved phase noise performance.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation datasheet (Rev. B) May 28, 2015
User guides LMX2492EVM Instructions User's Guide (Rev. E) May 05, 2017
Selection guides TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Technical articles Timing is Everything: How to create modulated waveforms using fractional PLLs Jun. 02, 2014

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 LMX2492EVM supports evaluation of the LMX2492 and LMX2492-Q1 which is an ultra-low noise 14 GHz wideband RF PLL with ramp/chirp generation, consisting of a delta-sigma fractional N PLL, phase detector, programmable 5V charge pump and high frequency divider for the VCO. The LMX2492 supports a (...)

Features
  • -227 dBc/Hz Normalized PLL Noise in Fractional Mode
  • 500 MHz to 14 GHz Wideband PLL
  • 3.15V to 5.5V Charge Pump PLL Voltage
  • Integrated FMCW Ramp / Chirp Generation
  • FSK / PSK Modulation
  • Excellent Ramp Linearity
  • 200 MHz Maximum Phase Detector Frequency
  • Integrated LDO for Digital Supply
  • Frequency / Phase (...)

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
SNAM163.ZIP (23 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
WQFN (RTW) 24 View options

Ordering & quality

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