GENERAL DESCRIPTION
The AD9642 is a 14-bit analog-to-digital converter (ADC) with sampling speeds of up to 250 MSPS. The AD9642 is designed to support communications applications, where low cost, small size, wide bandwidth, and versatility are desired.

FEATURES
   SNR = 71.0 dBFS at 185 MHz AIN and 250 MSPS
   SFDR = 83 dBc at 185 MHz AIN and 250 MSPS
   −152.0 dBFS/Hz input noise at 200 MHz, −1 dBFS AIN, 250 MSPS
   Total power consumption: 390 mW at 250 MSPS
   1.8 V supply voltages
   LVDS (ANSI-644 levels) outputs
   Integer 1-to-8 input clock divider (625 MHz maximum input)
   Sample rates of up to 250 MSPS
   Internal ADC voltage reference
   Flexible analog input range
      1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal)
   ADC clock duty cycle stabilizer
   Serial port control
   Energy saving power-down modes

APPLICATIONS
   Communications
   Diversity radio systems
   Multimode digital receivers (3G)
   TD-SCDMA, WiMAX, WCDMA,
      CDMA2000, GSM, EDGE, LTE
   I/Q demodulation systems
   Smart antenna systems
   General-purpose software radios
   Ultrasound equipment
   Broadband data applications