ADC14L020 Datasheet, PDF (1/32 Pages) National Semiconductor (TI) – 14-Bit, 20 MSPS, 150 mW A/D Converter

ADC14L020
www.ti.com
SNAS325D – JUNE 2005 – REVISED APRIL 2013
ADC14L020 14-Bit, 20 MSPS, 150 mW A/D Converter
Check for Samples: ADC14L020
FEATURES
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•2 Single +3.3V Supply Operation
• Internal Sample-and-Hold
• Internal Reference
• Outputs 2.4V to 3.6V Compatible
• Duty Cycle Stabilizer
• Power Down Mode
KEY SPECIFICATIONS
• Resolution 14 Bits
• DNL ±0.5 LSB (typ)
• SNR (f_IN = 10 MHz) 74 dB (typ)
• SFDR (f_IN = 10 MHz) 93 dB (typ)
• Data Latency 7 Clock Cycles
• Power Consumption
– Operating 150 mW (typ)
– Power Down Mode 15 mW (typ)
APPLICATIONS
• Medical Imaging
• Instrumentation
• Communications
• Digital Video
DESCRIPTION
The ADC14L020 is a low power monolithic CMOS
analog-to-digital converter capable of converting
analog input signals into 14-bit digital words at 20
Megasamples per second (MSPS). This converter
uses a differential, pipeline architecture with digital
error correction and an on-chip sample-and-hold
circuit to minimize power consumption while providing
excellent dynamic performance and a 150 MHz Full
Power Bandwidth. Operating on a single +3.3V power
supply, the ADC14L020 achieves 12.0 effective bits
at nyquist and consumes just 150 mW at 20 MSPS .
The Power Down feature reduces power consumption
to 15 mW.
The differential inputs provide a full scale differential
input swing equal to 2 times V_REF with the possibility
of a single-ended input. Full use of the differential
input is recommended for optimum performance.
Duty cycle stabilization and output data format are
selectable using a quad state function pin. The output
data can be set for offset binary or two's complement.
To ease interfacing to lower voltage systems, the
digital output driver power pins of the ADC14L020
can be connected to a separate supply voltage in the
range of 2.4V to the analog supply voltage.
This device is available in the 32-lead LQFP package
and will operate over the industrial temperature range
of −40°C to +85°C. An evaluation board is available
to ease the evaluation process.
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2
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.
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