AD9288

FEATURES Dual 8-bit, 40 MSPS, 80 MSPS, and 100 MSPS ADC Low power: 90 mW at 100 MSPS per channel On-chip reference and track-and-hold 475 MHz analog bandwidth each channel SNR = 47 dB @ 41 MHz 1 V p-p analog input range each channel Single 3.0 V supply operation (2.7 V to 3.6 V) Standby mode for single-channel operation Twos complement or offset binary output mode Output data alignment mode Pin-compatible 10-bit upgrade available APPLICATIONS Battery-powered instruments Hand-held scopemeters Low cost digital oscilloscopes I and Q communications GENERAL DESCRIPTION The AD9288 is a dual 8-bit monolithic sampling analog-todigital converter with on-chip track-and-hold circuits. It is optimized for low cost, low power, small size, and ease of use. The product operates at a 100 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-performance 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. 8-Bit, 40/80/100 MSPS Dual A/D Converter AD9288 FUNCTIONAL BLOCK DIAGRAM VDD OUTPUT REGISTER OUTPUT REGISTER 00585-001 ENCA AINA AINA REFINA REFOUT REFINB AINB AINB ENCB TIMING AD9288 8 T/H ADC REF T/H TIMING 8 ADC 8 D7A–D0A SELECT 1 SELECT 2 ...