AD9283

a FEATURES 8-Bit, 50, 80, and 100 MSPS ADC Low Power: 90 mW at 100 MSPS On-Chip Reference and Track/Hold 475 MHz Analog Bandwidth SNR = 46.5 dB @ 41 MHz at 100 MSPS 1 V p-p Analog Input Range Single 3.0 V Supply Operation (2.7 V–3.6 V) Power-Down Mode: 4.2 mW APPLICATIONS Battery Powered Instruments Hand-Held Scopemeters Low Cost Digital Oscilloscopes 8-Bit, 50 MSPS/80 MSPS/100 MSPS 3 V A/D Converter AD9283 FUNCTIONAL BLOCK DIAGRAM AIN AIN ENCODE VD PWRDWN VDD AD9283 T/H ADC OUTPUT STAGING TIMING REF 8 D7–D0 GND REF REF OUT IN GENERAL DESCRIPTION The AD9283 is an 8-bit monolithic sampling analog-to-digital converter with an on-chip track-and-hold circuit and 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. 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. The encoder input is TTL/CMOS compatible. A power-down function may be exercised to bring total consumption to 4.2 mW. In power-down mode, the digital outputs are driven to a high impedance state. Fabricated on an advanced CMOS process, the AD9283 is available in a 20-lead surface mount plastic packag...