Texas Instruments ADS54J64 Analog-to-Digital Converter (ADC)

Texas Instruments ADS54J64 Analog-to-Digital Converter (ADC) is a quad-channel, 14-bit, 1GSPS, analog-to-digital converter (ADC) offering wide-bandwidth, 2x oversampling, and high SNR. The ADS54J64 supports a JESD204B serial interface with data rates up to 10Gbps with one lane per channel. The buffered analog input provides uniform impedance and minimizes sample-and-hold glitch energy across a wide frequency range. The ADS54J64 provides an excellent spurious-free dynamic range (SFDR) over a large input frequency range with very low power consumption. The digital signal processing block includes complex mixers followed by low-pass filters with decimate-by-2 and 4 options supporting up to a 200MHz receive bandwidth. The Texas Instruments ADS54J64 also supports a 14-bit, 500MSPS output in DDC bypass mode.

Features

  • Quad channel, 14-bit resolution
  • 1GSPS maximum sampling rate 
  • 500MSPS maximum output sample rate 
  • A high-impedance analog input buffer
  • 1GHz analog input bandwidth (–3dB) 
  • Output options
    • Digital Down Conversion (DDC) using 16-bit NCO
    • DDC bypass with full rate output up to 500MSPS
  • Differential full-scale input (1.1 VPP)
  • JESD204B interface
    • Subclass 1 support
    • 1 lane per ADC up to 10Gbps
    • Dedicated SYNC pin for pair of channels
  • Support for multi-chip synchronization
  • Spectral performance
    • fIN = 190MHz IF at –1dBFS:SNR: 69dBFS
      • NSD: –153dBFS/Hz
      • SFDR: 86dBc (HD2, HD3), 95dBFS (non HD2, HD3)
    • fIN = 370MHz IF at –3dBFS:SNR: 68.5dBFS
      • NSD: –152.5dBFS/Hz
      • SFDR: 80dBc (HD2, HD3), 86dBFS (non HD2, HD3)
  • 72-pin VQFN package (10mm×10mm)
  • 625mW/Ch, 2.5W total power consumption 
  • 1.15V, 1.15V, 1.9V power supplies 

Applications

  • Multi-carrier, multi-mode, GSM cellular infrastructure base stations
  • Telecommunications receivers
  • Radar and antenna arrays
  • Cable CMTS, DOCSIS 3.1 receivers
  • Communications test equipment
  • Microwave receivers
  • Software Defined Radio (SDR)
  • Digitizers
  • Medical imaging and diagnostics

Simplified Block Diagram

Block Diagram - Texas Instruments ADS54J64 Analog-to-Digital Converter (ADC)
Publié le: 2018-05-02 | Mis à jour le: 2022-11-28