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The LMX2571NJKR is a high-performance, wideband frequency synthesizer from Texas Instruments (TI). Below are the factual specifications, descriptions, and features:

Specifications

• Manufacturer: Texas Instruments (TI)
• Category: Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers
• Type: Wideband PLLatinum™ RF Frequency Synthesizer
• Frequency Range: 20 MHz to 3.7 GHz
• Output Type: Differential LVDS
• Supply Voltage: 3.3 V
• Phase Noise: -224 dBc/Hz (typ) at 1 GHz, 1 MHz offset
• Reference Input Frequency: 10 MHz to 400 MHz
• Programmable Output Power: -4 dBm to +5 dBm
• Package: 40-VFQFN (5x5 mm)
• Operating Temperature Range: -40°C to +105°C
• Interface: SPI (Serial Peripheral Interface)

Descriptions

The LMX2571NJKR is a low-noise, wideband RF synthesizer with an integrated VCO (Voltage-Controlled Oscillator) and PLL (Phase-Locked Loop). It is designed for applications requiring high-frequency precision, such as wireless infrastructure, test equipment, and radar systems.

Key Features

• Ultra-Low Phase Noise for high-performance RF applications.
• Integrated VCO eliminates the need for external components.
• Fast Frequency Switching (< 20 µs typical).
• Fractional-N and Integer-N Modes for flexible frequency synthesis.
• High-Resolution Frequency Steps (down to 0.012 Hz).
• Differential Output (LVDS) for improved noise immunity.
• SPI Programmable for easy configuration.
• Wide Supply Voltage Range (3.15 V to 3.45 V).

This device is part of TI’s PLLatinum™ RF synthesizer family, optimized for high-frequency, low-phase-noise applications.

For detailed datasheets and application notes, refer to the official Texas Instruments website.