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Texas Instruments ADC32RF44 Dual-Channel 14-Bit ADCs

Texas Instruments ADC32RF44 Dual-Channel, 14-Bit, 2.6GSPS RF-Sampling Analog-to-Digital Converters offer input frequencies up to 4GHz and are designed for high signal-to-noise ratios (SNR). The ADC32RF44 delivers a noise spectral density of –154.2dBFS/Hz and a dynamic range, including channel isolation over a large input frequency range. The buffered analog input with on-chip termination minimizes sample-and-hold glitch energy, resulting in uniform input impedance across a wide frequency range. Phase-coherent frequency hopping occurs as each ADC channel is connected to a dual-band, digital down-converter (DDC) with up to three independent, 16-bit numerically-controlled oscillators (NCOs) per DDC.

The device features front-end peak and RMS power detectors and alarm functions to support external automatic gain control (AGC) algorithms. The JESD204B serial interface with subclass 1-based deterministic latency is also supported using data rates up to 12.5Gbps with up to four lanes per ADC. An industrial temperature range of –40°C to +85°C is supported by the Texas Instruments ADC32RF44 Analog-to-Digital Converters.

Features

  • 14-Bit, dual-channel, 2.6GSPS ADC
  • 90fS aperture jitter 
  • 95dB at fIN = 1.8GHz channel isolation
  • Spectral performance (fIN = 900MHz, –2dBFS)
    • SNR: 61.2dBFS
    • SFDR: 65dBc HD2, HD3
    • SFDR: 79dBc worst spur
  • Spectral performance (fIN = 1.85GHz, –2dBFS)
    • SNR: 58.3dBFS
    • SFDR: 69dBc HD2, HD3
    • SFDR: 74dBc worst spur
  • On-chip digital down-converters
    • Up to 4 DDCs (dual-band mode)
    • Up to 3 independent NCOs per DDC
  • On-chip input clamp for overvoltage protection
  • Programmable on-chip power detectors with alarm pins for AGC support
  • On-chip dither
  • –154.2dBFS/Hz noise floor 
  • RF input supports up to 4.0GHz
  • On-chip input termination
  • 1.35VPP input full-scale 
  • Support for multi-chip synchronization
  • JESD204B interface
    • Subclass 1-based deterministic latency
    • Four lanes per channel at 12.5Gbps
  • 2.95W/Ch at 2.6GSPS power dissipation 
  • 72-pin VQFN package (10mm × 10mm)

Applications

  • Multi-band, multi-mode 2G, 3G, and 4G cellular receivers
  • Phased array radars
  • Electronic warfare
  • Software-defined radios
  • Cable infrastructure
  • Broadband wireless
  • High-speed digitizers
  • Communications test equipment
  • Microwave and millimeter wave receivers

Block Diagram

Block Diagram - Texas Instruments ADC32RF44 Dual-Channel 14-Bit ADCs
Publicado: 2018-06-28 | Actualizado: 2023-02-24