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Texas Instruments ADC32RF52 14-Bit 1.5GSPS Dual-Channel ADC

Texas Instrument ADC32RF52 14-Bit 1.5GSPS Dual-Channel Analog-to-Digital Converter (ADC) supports RF sampling with input frequencies up to 2GHz. The design delivers a noise spectral density of -153dBFS/Hz and maximizes signal-to-noise ratio (SNR). The noise density improves to -156dBFS/Hz (2x AVG) and -159dBFS/Hz (4x AVG), using additional internal ADCs and on-chip signal averaging.

Each ADC channel can be connected to a quad-band digital down-converter (DDC) using a 48-bit NCO. This connection supports phase-coherent frequency hopping. Frequency hopping can be achieved in less than 1µs using the GPIO pins for NCO frequency control.

The Texas Instruments ADC32RF52 supports the JESD204B serial data interface with subclass 1 deterministic latency using data rates up to 13Gbps. The power-efficient ADC architecture consumes 1.4W/ch at 1.5Gsps and provides power scaling with lower sampling rates.

Features

  • 14-Bit, dual channel 1.5GSPS ADC
  • Noise spectral density
    • NSD = -153dBFS/Hz (no AVG)
    • NSD = -156dBFS/Hz (2x AVG)
    • NSD = -159dBFS/Hz (4x AVG)
  • Single-core (non-interleaved) ADC architecture
  • 50fs aperture jitter
  • Low close-in residual phase noise
    • -133dBc/Hz at 10kHz offset
  • Spectral performance (fIN = 900MHz, -4dBFS)
    • 2x internal averaging
    • SNR: 66.8dBFS
    • SFDR HD2,3: 74dBc
    • SFDR worst spur: 90dBFS
  • Input fullscale of 1.0/1.1Vpp (1/1.8dBm)
  • Code error rate (CER) of 10-15
  • 1.6GHz full power input bandwidth (-3dB)
  • JESD204B serial data interface
    • 13Gbps maximum lane rate
    • Supports subclass 1 deterministic latency
  • Digital down-converters
    • Up to four DDCs per ADC channel
    • Complex output: 4x, 16x to 128x decimation
    • 48-bit NCO phase-coherent frequency hopping
    • < 1us fast frequency hopping
  • 1.8W/channel (2x AVG) power consumption
  • Supports power supplies of 1.8V and 1.2V

Applications

  • Phased array radar
  • Spectrum analyzer
  • Software-defined radio (SDR)
  • Electronic warfare
  • High-speed digitizer
  • Cable infrastructure
  • Communications infrastructure

Functional Block Diagram

Block Diagram - Texas Instruments ADC32RF52 14-Bit 1.5GSPS Dual-Channel ADC
Đã phát hành: 2024-01-16 | Đã cập nhật: 2024-01-22