ADC and PLL+VCO Widens Bandwidth And Lowers Phase Noise

Texas Instruments introduces an analog-to-digital converter (ADC) and phase-locked loop (PLL) with an integrated voltage-controlled oscillator (VCO) that reportedly deliver the widest bandwidth, lowest phase noise and highest dynamic range in the industry. The wideband ADC12DJ3200 is the fastest 12-bit ADC, delivering speeds up to 6.4 GSPS. The LMX2594 is the industry's first wideband PLL solution to generate frequencies of up to 15 GHz without using an internal frequency doubler.

 

A multi-node synchronization reference design demonstrates how the ADC12DJ3200 and LMX2594 provide accurate, time-stable synchronization for multi-node sampling systems including large-scale phased-array radars, digital storage oscilloscopes (DSOs) and 5G wireless testers. The reference design showcases the LMX2594's SYSREF forwarding feature and the ADC12DJ3200's aperture delay adjust, time stamp and calibration features to improve accuracy and ease system design.

Free Newsletter

Like this article? Subscribe to FierceSensors!

The sensors industry is constantly changing as innovation runs the market’s trends. FierceSensors subscribers rely on our suite of newsletters as their must-read source for the latest news, developments and analysis impacting their world. Register today to get sensors news and updates delivered right to your inbox.

 

ADC features include:

  • Widest signal bandwidth: Featuring the industry's fastest sample rate of 6.4 GSPS at a 12-bit resolution –18 percent faster than competitive devices – the ADC12DJ3200 enables designers to capture the widest bandwidth possible to process more information instantaneously.
  • Highest analog input-frequency range: With direct radio-frequency (RF) sampling up to 10 GHz covering the L-band, S-band and C-band and extending into the X-band, the ADC12DJ3200 enables simplified system architectures and provides enhanced frequency agility, while reducing filter complexity, in turn save board space and component count.
  • Saves space: The 10-mm-by-10-mm device integrates an entire RF-to-bits receiver, reducing board space by up to 88 percent compared to competing solutions while enabling designers to reduce cost by simplifying the system architecture.
  • Low power: Consuming as little as 3 W, the ADC provides twice the input frequency range at half the power of competing devices.

 

LMX2594 RF PLL with VCO offers:

  • Best noise performance: The LMX2594 features the industry's lowest normalized PLL noise floor of -236 dBc/Hz and 1/f of -129 dBc/Hz, enabling designers to improve radio sensitivity and spectral resolution.
  • Design simplicity: The integrated VCO operates at up to 15 GHz, eliminating the need for expensive, complex on-board filters to remove subharmonics. The LMX2594 also automatically generates a frequency ramp, eliminating up to five devices typically required to perform this function for radar applications and enabling compact solutions.
  • Phase synchronization: System designers can easily synchronize the output of all on-board PLLs, saving design time for implementing multiple-input/multiple-output (MIMO), beamforming in their applications.
  • JESD204B support: The LMX2594 enables simultaneous generation of gigahertz frequency sampling and JESD204B SYSREF timing signals.

 

Availability and pricing

 

The ADC12DJ3200 is sampling now through TI.com and authorized distributors. The ADC comes in a flip-chip ball-grid array (FCBGA) package and is priced in 100-unit quantities at US$1,920.00. The LMX2594 is fully orderable and comes in a very thin quad flat no-lead (VQFN) package. It is priced at US$41.00 in 1,000-unit quantities.

 

ADC12DJ3200 DATASHEET

LMX2594 DATASHEET

Learn more at http://www.ti.com

Suggested Articles

A flow sensor (more commonly referred to as a “flow meter”) is an electronic device that measures or regulates the flow rate of liquids and gasses.

A motion sensor (or motion detector) is an electronic device that is designed to detect and measure movement

Analyst praises Intel’s AI investments