GENERAL DESCRIPTION

The AD9626 is a 12-bit monolithic sampling analog-to-digital converter optimized for high performance, low power, and ease of use. The product operates at up to a 250 MSPS conversion rate and is optimized for outstanding dynamic performance in wideband carrier and broadband systems. All necessary functions, including a track-and-hold (T/H) and voltage reference, are included on the chip to provide a complete signal conversion solution.

FEATURES

SNR = 64.8 dBFS @ fIN up to 70 MHz @ 250 MSPS

ENOB of 10.5 @ fIN up to 70 MHz @ 250 MSPS (−1.0 dBFS)

SFDR = 80 dBc @ fIN up to 70 MHz @ 250 MSPS (−1.0 dBFS)

Excellent linearity

DNL = ±0.3 LSB typical

INL = ±0.7 LSB typical

CMOS outputs

Single data port at up to 250 MHz

Interleaved dual port @ ½ sample rate up to 125 MHz

700 MHz full power analog bandwidth

On-chip reference, no external decoupling required

Integrated input buffer and track-and-hold

Low power dissipation

272 mW @ 170 MSPS

364 mW @ 250 MSPS

Programmable input voltage range

1.0 V to 1.5 V, 1.25 V nominal

1.8 V analog and digital supply operation

Selectable output data format (offset binary, twos

complement, Gray code)

Clock duty cycle stabilizer

Integrated data capture clock

APPLICATIONS

Wireless and wired broadband communications

Cable reverse path

Communications test equipment

Radar and satellite subsystems

Power amplifier linearization