ADC12081 Datasheet | National Semiconductor

Description The ADC12081 is a monolithic CMOS analog-to-digital converter capable of converting analog input signals into 12-bit digital words at 5 megasamples per second (MSPS). The ADC12081 utilizes an innovative pipeline architecture to minimize die size and power consumption. The ADC12081 uses self-calibration and error correction to maintain accuracy and performance over temperature. The ADC12081 converter operates on a 5V power supply and can digitize analog input signals in the range of 0 to 2V. A single convert clock controls the conversion operation. All digital I/O is TTL patible. The ADC12081 is designed to minimize external ponents necessary for the analog input interface. An internal sample-and-hold circuit samples the analog input and an internal amplifier buffers the reference voltage input. The ADC12081 is available in the 32-lead TQFP package and is designed to operate over the extended mercial temperature range of -40˚C to +85˚C. Features n n n n n Single 5V power supply Simple analog input interface Internal Sample-and-hold Internal Reference buffer amplifier Low power consumption Key Specifications n Resolution n Conversion Rate n DNL n SNR n ENOB n Analog Input Range n Supply Voltage n Power Consumption, 5 MHz 12 Bits 5 Msps (min) ± 0.35 LSB (typ) 68 d B (typ) 10.9 Bits (typ) 2 Vpp (min) +5V ± 5% 105 m W (typ) Applications n n n n n Image processing front end PC-based data acquisition Scanners Fax machines Waveform digitizer Connection Diagram DS100150-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. CN © 2000 National Semiconductor Corporation DS100150 .national. Ordering Information Industrial (- 40˚C ≤ TA ≤ +85˚C) ADC12081CIVT ADC12181 EVAL Package 32 pin TQFP Evaluation Board Simplified Block Diagram DS100150-2 .national. Pin Descriptions and Equivalent Circuits #2 No. 2 Symbol VIN Equivalent Circuit Description Analog signal input. With a 2.0V reference voltage, input signal...