ADC12281
ADC12281 Description
12-Bit, 20 MSPS Single-Ended Input, Pipelined A/D Converter
ADC12281 Vendor
National Semiconductor
ADC12281 Categories
ADC12281 Features
  • Single 5V power supply
  • Single-ended analog input
  • Internal sample-and-hold
  • Internal reference buffer amplifier
  • Low offset and gain errors
ADC12281 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.

ADC12281 Datasheet and Application Notes
ParameterValue
Temperature Min (deg C)-40
Temperature Max (deg C)85
Resolution (bit)12
Speed (MSPS)20
MinSupply Voltage (Volt)5.25
MaxSupply Voltage (Volt)4.75
Power Dissipation (Watt).4430
Nominal Vin (Vpp)2
INL (+/-) (LSB)1
DNL (+/-) (LSB).40
ENOB (bit)10.50
SINAD (dB)65
SNR (dB)65.50
SFDR (dB)75
THD dB (dB)-76
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