February 2006
ADC12DL080
Dual 12-Bit, 80 MSPS, A/D Converter for IF Sampling
General Description
Features
n Single +3.3V supply operation
n Internal sample-and-hold
n Internal or External reference
n Outputs 2.4V to 3.6V compatible
n Power down mode
The ADC12DL080 is a dual, low power monolithic CMOS
analog-to-digital converter capable of converting analog in-
put signals into 12-bit digital words at 80 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 600
MHz Full Power Bandwidth. Operating on a single +3.3V
power supply, the ADC12DL080 achieves 11.0 effective bits
at Nyquist and consumes just 447mW at 80 MSPS. The
Power Down feature reduces power consumption to 50 mW.
n Duty Cycle Stabilizer
n Pin compatible with ADC12DL040, ADC12DL065,
ADC12DL066
Key Specifications
n Resolution
12 Bits
The differential inputs provide a full scale differential input
swing equal to 2 times VREF with the possibility of a single-
ended input. Full use of the differential input is recom-
mended for optimum performance. Duty cycle stabilization
and output data format are selectable. The output data can
be set for offset binary or two’s complement.
n Max Conversion Rate
n DNL
80 MSPS
0.4 LSB (typ)
69 dB (typ)
67 dB (typ)
82 dB (typ)
81 dB (typ)
n SNR (fIN=40MHz)
n SNR (fIN=200MHz)
n SFDR (fIN=40MHz)
n SFDR (fIN=200MHz)
n Power Consumption
— Operating
To ease interfacing to lower voltage systems, the digital
output driver power pins of the ADC12DL080 can be con-
nected to a separate supply voltage in the range of 2.4V to
the analog supply voltage. This device is available in the
64-lead TQFP 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.
447 mW (typ)
50 mW (typ)
— Power Down Mode
Applications
n Instrumentation
n Communications Receivers
n Sonar/Radar
n xDSL, Cable Modems
Connection Diagram
20169401
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