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Texas Instruments LMX2572LP Wideband RF Synthesizer

Texas Instruments LMX2572LP Wideband RF Synthesizer is a low-power, high-performance wideband synthesizer that can generate one frequency from 12.5MHz to 2GHz without using an internal doubler. The PLL delivers excellent performance while consuming just 70mA from a single 3.3V supply. For applications like digital mobile radio (DMR) and wireless microphones, the LMX2572LP supports FSK modulation. Discrete-level FSK and pulse-shaping FSK are supported. Direct digital FSK modulation is achievable through programming or pins.

The Texas Instruments LMX2572LP allows users to synchronize the output of multiple devices and also enables applications that need a deterministic delay between input and output. The LMX2572LP allows adjusting 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 a 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 20µs.

Features

  • 12.5MHz to 2GHz output frequency
  • 70mA at 3.3V supply low power consumption 
  • –124dBc/Hz phase noise at 100kHz offset with 800MHz carrier
  • –232dBc/Hz PLL figure of merit 
  • –123.5dBc/Hz PLL normalized 1/f noise 
  • Remove integer boundary spurs with a programmable input multiplier
  • 32-bit fractional-N divider
  • Synchronization of output phase across multiple devices
  • Support for ramp and chirp functions
  • Support for FSK direct digital modulation
  • Two programmable output power level differential outputs
  • < 20µs fast VCO calibration speed 
  • Single 3V to 3.5V power supply

Applications

  • Test and measurement equipment
  • Digital 2-way radios
  • Low-power radio communication systems
  • Satellite communication
  • Wireless microphones
  • Propriety wireless connectivity

Functional Block Diagram

Block Diagram - Texas Instruments LMX2572LP Wideband RF Synthesizer

Related Development Tool

Texas Instruments LMX2572LPEVM Evaluation Module

Fully assembled and tested circuit for evaluating the LMX2572LP.

Learn MoreInformazioni su Texas Instruments LMX2572LPEVM Evaluation Module View ProductsCorrelato a Texas Instruments LMX2572LPEVM Evaluation Module
Pubblicato: 2018-06-21 | Aggiornato: 2023-03-03