GENERAL DESCRIPTION
The AD9244 is a monolithic, single 5 V supply, 14-bit, 40 MSPS/65 MSPS ADC with an on-chip, high performance sample-and-hold amplifier (SHA) and voltage reference. The AD9244 uses a multistage differential pipelined architec ture with output error correction logic to provide 14-bit accuracy at 40 MSPS/65 MSPS data rates, and guarantees no missing codes over the full operating temperature range. The AD9244 has an on-board, programmable voltage reference.
An external reference can also be used to suit the dc accuracy and temperature drift requirements of the application.
A differential or single-ended clock input controls all internal conversion cycles. The digital output data can be presented in straight binary or in twos complement format. An out-of-range (OTR) signal indicates an overflow condition that can be used with the most significant bit to determine low or high overflow.
Fabricated on an advanced CMOS process, the AD9244 is available in a 48-lead LQFP and is specified for operation over the industrial temperature range (–40°C to +85°C).

FEATURES
  14-bit, 40 MSPS/65 MSPS ADC
  Low power
     550 mW at 65 MSPS
     300 mW at 40 MSPS
  On-chip reference and sample-and-hold
  750 MHz analog input bandwidth
  SNR > 73 dBc to Nyquist @ 65 MSPS
  SFDR > 86 dBc to Nyquist @ 65 MSPS
  Differential nonlinearity error = ±0.7 LSB
  Guaranteed no missing codes over full temperature range
  1 V to 2 V p-p differential full-scale analog input range
  Single 5 V analog supply, 3.3 V/5 V driver supply
  Out-of-range indicator
  Straight binary or twos complement output data
  Clock duty cycle stabilizer
  Output-enable function
  48-lead LQFP package

APPLICATIONS
  Communication subsystems (microcell, picocell)
  Medical and high-end imaging equipment
  Test and measurement equipment