ADC12281

ADC12281 12-Bit, 20 MSPS Single-Ended Input, Pipelined A/D Converter March 2000 ADC12281 12-Bit, 20 MSPS Single-Ended Input, Pipelined A/D Converter General Description The ADC12281 is a monolithic CMOS analog-to-digital converter capable of converting analog input signals into 12-bit digital words at 20 megasamples per second (MSPS). It utilizes a pipeline architecture to minimize die size and power dissipation. Self-calibration and error correction maintain accuracy and performance over temperature. The ADC12281 operates on a 5V power supply and can digitize single-ended analog input signals in the range of 0V to 2V. A single convert clock controls the conversion operation and all digital I/O is TTL compatible. The ADC12881 is designed to minimize external components necessary for the analog input interface. An internal sample-and-hold circuit samples the single-ended analog input and an internal amplifier buffers the reference voltage input. The Power Down feature reduces power consumption to 20 mW, typical. The ADC12281 is available in the 32-lead TQFP package and is designed to operate over the industrial temperature range of −40˚C to +85˚C. Features n n n n n Single 5V power supply Single-ended analog input Internal sample-and-hold Internal reference buffer amplifier Low offset and gain errors Key Specifications n n n n n n n n Resolution Conversion rate DNL SNR ENOB Analog input range Supply voltage Power consumption, 20 MHz 12 bits up to 20 MSPS 0.35 LSB (typ) 65....