GENERAL DESCRIPTION
The AD9218 is a dual 10-bit monolithic sampling analog-to digital converter with on-chip track-and-hold circuits and is optimized for low cost, low power, small size and ease of use. The product operates at a 105 MSPS conversion rate with outstanding dynamic performance over its full operating range. Each channel can be operated independently.
The ADC requires only a single 3.0 V (2.7 V to 3.6 V) power supply and an encode clock for full operation. No external reference or driver components are required for many applications. The digital outputs are TTL/CMOS-compatible and a separate output power supply pin supports interfacing with 3.3 V or 2.5 V logic.
The clock input is TTL/CMOS-compatible and the 10-bit digital outputs can be operated from 3.0 V (2.5 V to 3.6 V) supplies. User-selectable options are available to offer a combination of power-down modes, digital data formats and digital data timing schemes. In power-down mode, the digital outputs are driven to a high-impedance state.
Fabricated on an advanced CMOS process, the AD9218 is available in a 48-lead surface-mount plastic package (7 × 7 mm LQFP) specified over the industrial temperature range (–40°C to +85°C).

FEATURES
   Dual 10-Bit, 40 MSPS, 65 MSPS, 80 MSPS, and
      105 MSPS ADC
   Low Power: 275 mW at 105 MSPS per Channel
   On-Chip Reference and Track/Holds
   300 MHz Analog Bandwidth Each Channel
   SNR = 57 dB @ 41 MHz, Encode = 80 MSPS
   1 V p-p or 2 V p-p Analog Input Range Each Channel
   Single 3.0 V Supply Operation (2.7 V–3.6 V)
   Power-Down Mode for Single Channel Operation
   Two’s Complement or Offset Binary Output Mode
   Output Data Alignment Mode
   Pin-Compatible with 8-Bit AD9288
   –75 dBc Crosstalk between Channels
  
APPLICATIONS
   Battery-Powered Instruments
   Hand-Held Scopemeters
   Low Cost Digital Oscilloscopes
   I and Q Communications
   Ultrasound Equipment