ADS4128 - 12-Bit, 200-MSPS Analog-to-Digital Converter (ADC)

The ADS4128 is a 12-bit analog-to-digital converter (ADC) with sampling rates up to 200 MSPS. This device uses innovative design techniques to achieve high dynamic performance, while consuming extremely low power at 1.8-V supply. The device is well-suited for multi-carrier, wide-bandwidth communications applications.

The ADS4128 has fine-gain options that can be used to improve SFDR performance at lower full-scale input ranges, especially at high input frequencies. It includes a dc offset correction loop that can be used to cancel the ADC offset. At lower sampling rates, the ADC automatically operates at scaled-down power with no loss in performance.

The ADS4128 is available in a compact VQFN-48 package and is specified over the industrial temperature range (–40°C to 85°C).

• Maximum Sample Rate: 200 MSPS
• Ultralow Power with 1.8-V Single Supply:
  • 230-mW Total Power at 200 MSPS
• High Dynamic Performance:
  • SNR: 69 dBFS at 170 MHz
  • SFDR: 85 dBc at 170 MHz
• Dynamic Power Scaling With Sample Rate
• Output Interface:
  • Double Data Rate (DDR) LVDS with
    Programmable Swing and Strength
    • Standard Swing: 350 mV
    • Low Swing: 200 mV
    • Default Strength: 100-Ω Termination
    • 2× Strength: 50-Ω Termination
  • 1.8-V Parallel CMOS Interface Also Supported
• Programmable Gain up to 6 dB for SNR and
  
  SFDR Trade-Off
• DC Offset Correction
• Supports Low Input Clock Amplitude Down to 200
  mV_PP
• Package: 7.00 mm × 7.00 mm VQFN-48