ADC12020

ADC12020 www.ti.com SNAS186B – APRIL 2003 – REVISED MARCH 2013 ADC12020 12-Bit, 20 MSPS, 185 mW A/D Converter with Internal Sample-and-Hold Check for Samples: ADC12020 FEATURES 1 23 Internal sample-and-hold Outputs 2.35V to 5V compatible Pin compatible with ADC12010, ADC12040, ADC12L063 and ADC12L066 TTL/CMOS compatible input/outputs Power down mode On-chip reference buffer APPLICATIONS Image Processing Front End Instrumentation PC-Based Data Acquisition Fax Machines Waveform Digitizers Sonar/Radar DSP Front Ends KEY SPECIFICATIONS Resolution 12 Bits Conversion Rate 20 MSPS (min) DNL ±0.35 LSB (typ) ENOB (fIN = 10.1 MHz) 11.3 bits (typ) Supply Voltage +5 / ±5 V / % Power Consumption, 20 MHz 185 mW (typ) DESCRIPTION The ADC12020 is a monolithic CMOS analog-todigital converter capable of converting analog input signals into 12-bit digital words at 20 Megasamples per second (MSPS), minimum. This converter uses a differential, pipeline architecture with digital error correction and an on-chip sample-and-hold circuit to minimize die size and power consumption while providing excellent dynamic performance. Operating on a single 5V power supply, this device consumes just 185 mW at 20 MSPS, including the reference current. The Power Down feature reduces power consumption to 40 mW. The differential inputs provide a full scale input swing equal to 2VREF with the possibility of a single-ended input. Full use of the differential input is recommen...