GENERAL DESCRIPTION

The AD9648 is a monolithic, dual-channel, 1.8 V supply, 14-bit, 105 MSPS/125 MSPS analog-to-digital converter (ADC). It features a high performance sample-and-hold circuit and on chip voltage reference.

The product uses multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 125 MSPS data rates and to guarantee no missing codes over the full operating temperature range.

FEATURES

  1.8 V analog supply operation

  1.8 V CMOS or LVDS outputs

  SNR = 74.5 dBFS @ 70 MHz

  SFDR = 91 dBc @ 70 MHz

  Low power: 78 mW/channel ADC core @ 125 MSPS

  Differential analog input with 650 MHz bandwidth

  IF sampling frequencies to 200 MHz

  On-chip voltage reference and sample-and-hold circuit

  2 V p-p differential analog input

  DNL = ±0.35 LSB

  Serial port control options

     Offset binary, gray code, or twos complement data format

     Optional clock duty cycle stabilizer

     Integer 1-to-8 input clock divider

     Data output multiplex option

     Built-in selectable digital test pattern generation

     Energy-saving power-down modes

     Data clock out with programmable clock and data alignment

  

APPLICATIONS

  Communications

  Diversity radio systems

  Multimode digital receivers

     GSM, EDGE, W-CDMA, LTE,

     CDMA2000, WiMAX, TD-SCDMA

  I/Q demodulation systems

  Smart antenna systems

  Broadband data applications

  Battery-powered instruments

  Hand held scope meters

  Portable medical imaging

  Ultrasound

  Radar/LIDAR