ADS4245-EP - Dual-Channel, 14-Bit, 125-MSPS Analog-to-Digital Converter (ADC)- Enhanced Product

The ADS4245 is a low-speed variant of the ADS42xx ultralow-power family of dual-channel,14-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achievehigh-dynamic performance, while consuming extremely low power with 1.8V supply. This topology makesthe ADS4245 well-suited for multi-carrier, wide-bandwidth communications applications.

The ADS4245 has gain options that can be used to improve SFDR performance at lowerfull-scale input ranges. These device includes a dc offset correction loop that can be used tocancel the ADC offset. Both DDR (double data rate) LVDS and parallel CMOS digital output interfacesare available in a compact VQFN-64 PowerPAD™ package.

The device includes internal references while the traditional reference pins andassociated decoupling capacitors have been eliminated. The ADS4245 is specified over the militarytemperature range (–55°C to 125°C).

• Ultralow Power with Single 1.8V Supply,
  CMOS Output:
  • 277mW total power at 125MSPS
• High Dynamic Performance:
  • 88dBc SFDR at 170MHz
  • 71.4dBFS SNR at 170MHz
• Crosstalk: > 90dB at 185MHz
• Programmable Gain up to 6dB for
  SNR/SFDR Trade-off
• DC Offset Correction
• Output Interface Options:
  • 1.8V parallel CMOS interface
  • Double data rate (DDR) LVDS with programmable swing:
    • Standard swing: 350mV
    • Low swing: 200mV
• Supports Low Input Clock Amplitude
  Down to 200mV_PP
• Supports Defense, Aerospace, and Medical Applications
  • Controlled Baseline
  • One Assembly and Test Site
  • One Fabrication Site
  • Available in Military (–55°C to 125°C) Temperature Range
  • Extended Product Life Cycle
  • Extended Product-Change Notification
  • Product Traceability

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