ADC12281

Features:

·Single 5V power supply
·Single-ended analog input
·Internal sample-and-hold
·Internal reference buffer amplifier
·Low offset and gain errors




Application

·Digital signal processing front end
·Digital television
·Radar
·High speed data links
·Waveform digitizers
·Quadrature demodulation




Pinout






Specifications

Supply Voltages (V_A, V_D, V_D I/O) 6.5V
|V_AV_D|100 mV
V_D I/OV_A, V_D I/OV_D 300 mV
Voltage on Any Input or Output Pin -0.3V to VA +0.3V
Input Current at Any Pin (Note 3) ±25 mA
Package Input Current (Note 3) ±50 mA
Power Dissipation at T_A = 25 See (Note 4)
ESD Susceptibility
Human Body Model (Note 5) 2500V
Machine Model (Note 5) 250V
Soldering Temperature, Infrared,
(10 sec.) (Note 6) 300
Storage Temperature -65 to +150

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 to +85.