ADC12020 Datasheet, PDF (1/29 Pages) National Semiconductor (TI) – 12-Bit, 20 MSPS, 185 mW A/D Converter with Internal Sample-and-Hold

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
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•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 (f_IN = 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-to-
digital 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 2V_REF with the possibility of a single-ended
input. Full use of the differential input is
recommended for optimum performance. For ease of
use, the buffered, high impedance, single-ended
reference input is converted on-chip to a differential
reference for use by the processing circuitry. Output
data format is 12-bit offset binary.
This device is available in the 32-lead LQFP package
and will operate over the industrial temperature range
of −40°C to +85°C.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TRI-STATE is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2013, Texas Instruments Incorporated