ADS41B29/B49 250MSPS Ultra-Low Power ADC



Texas Instruments ADS41B29/B49 250MSPS Ultra-Low Power ADC

Texas Instruments' 14-/12-Bit, 250MSPS, ultralow-power ADC with analog buffers

Texas Instruments' ADS41B29/B49 buffers are members of the ultra-low Power ADS4xxx analog-to-digital converter (ADC) family that feature integrated analog input buffers. These devices use innovative design techniques to achieve high dynamic performance, while consuming extremely low power. The analog input pins have buffers with benefits of constant performance and input impedance across a wide frequency range. These devices have features such as digital gain and offset correction. The gain option can be used to improve SFDR performance at lower full-scale input ranges, especially at high input frequencies.

  Features
  • ADS41B49: 14-Bit, 250MSPS
    ADS41B29: 12-Bit, 250MSPS
  • Integrated high-impedance analog input buffer:
    • Input capacitance: 2pF
    • 200MHz input resistance: 3kΩ
  • Maximum sample rate: 250MSPS
    • 1.8V analog power: 180mW
    • 3.3V buffer power: 96mW
    • I/O power: 135mW (DDR LVDS)
  • High dynamic performance:
    • SNR: 69dBFS at 170MHz
    • SFDR: 82.5dBc at 170MHz
  • Output interface:
    • Double data rate (DDR) LVDS with programmable swing and strength:
      • Standard swing: 350mV
      • Low swing: 200mV
      • Default strength: 100Ω termination
      • 2× strength: 50Ω termination
    • 1.8V parallel CMOS interface also supported
  • Programmable gain for SNR/SFDR trade-off
  • DC Offset Correction

Texas Instruments
Part Number
Digi-Key
Part Number
Packaging Number of Bits Sampling Rate
(Per Second)
Package  
ADS41B29IRGZT 296-28093-2-ND Tape & Reel 12 250M 48-VFQFN
Exposed Pad
ADS41B29 Datasheet
 296-28093-1-ND Cut Tape
 296-28093-6-ND Digi-Reel®
ADS41B49IRGZT 296-28094-2-ND Tape & Reel 14
 296-28094-1-ND Cut Tape
 296-28094-6-ND Digi-Reel®
  View All ADS4xxx Family ADCs