Top

Product details

Parameters

Integrated VCO Yes Output frequency (Min) (MHz) 28 Output frequency (Max) (MHz) 6400 Normalized PLL phase noise (dBc/Hz) -232 Current consumption (mA) 75 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -124 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: 12.5 MHz to 6.4 GHz
  • Low power consumption: 75 mA at 3.3-V supply
  • –106-dBc/Hz Phase noise at 100-kHz offset with 6.4-GHz carrier
  • PLL figure of merit: –232 dBc/Hz
  • PLL normalized 1/f noise: –123.5 dBc/Hz
  • 32-Bit Fractional-N divider
  • Remove integer boundary spurs with programmable input multiplier
  • Synchronization of output phase across multiple devices
  • Support for JESD204B SYSREF with programmable delay
  • Support for ramp and chirp functions
  • Support for FSK direct digital modulation
  • Two programmable output power level differential outputs
  • Fast VCO calibration speed: < 20 µs
  • Single 3-V to 3.5-V power supply

All trademarks are the property of their respective owners.

open-in-new Find other RF PLLs & synthesizers

Description

The LMX2572 is a low-power, high-performance wideband synthesizer that can generate any frequency from 12.5 MHz to 6.4 GHz without using an internal doubler. The PLL delivers excellent performance while consuming just 75 mA from a single 3.3-V supply.

For applications like digital mobile radio (DMR) and wireless microphones, the LMX2572 supports FSK modulation. Discrete level FSK and pulse-shaping FSK are supported. Direct digital FSK modulation is achievable through programming or pins.

The LMX2572 allows users to synchronize the output of multiple devices and also enables applications that need deterministic delay between input and output. The LMX2572 provides an option to adjust the phase with fine granularity to account for delay mismatch on the board or within devices. A frequency ramp generator can synthesize up to two segments of ramp in an automatic ramp generation option or a manual option for maximum flexibility. The fast calibration algorithm allows the user to change frequencies faster than 20 µs. The LMX2572 also supports generating or repeating SYSREF (compliant to JESD204B standard) making it an ideal low-power, low-noise clock source for clocking high-speed data converters. Fine delay adjustment is provided in this configuration to account for delay differences of board traces.

The LMX2572 integrates LDOs from a single 3.3-V supply, thus eliminating the need for onboard low-noise LDOs.

open-in-new Find other RF PLLs & synthesizers
Download

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 LMX2572 6.4-GHz Low power wideband RF synthesizer with phase synchronization and JESD204B support datasheet (Rev. B) Jan. 29, 2019
User guides LMX2572EVM Evaluation Instructions (Rev. B) Jul. 19, 2019
Application notes Achieving Low Frequency Switchover Time for Wireless Infrastructure Applications Nov. 28, 2018
Application notes LMX2571 Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs Jan. 12, 2016

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
This Evaluation Module is for the LMX2572, which is a low-power high-performance wideband synthesizer that can generate any frequency from 13 MHz to 6.4 GHz without using an internal doubler. The PLL delivers excellent performance while consuming just 75 mA from a single 3.3-V supply. This device (...)
Features
  • 13-MHz to 6.4-GHz Output Frequency
  • -106 dBc/Hz Phase Noise at 100 kHz Offset with 6.4 GHz Carrier
  • 75 mA operation current with one direct VCO output
  • Two differential outputs with programmable output power
  • This EVM has the complete circuit for the synthesizer, optimized and tested for performance, and (...)

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
SNAM224.ZIP (41 KB) - IBIS Model
CAD/CAE SYMBOLS Download
SNAR037.ZIP (899 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RHA) 40 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos