1FEATURES
2• Binary or 2’s Complement Output Format
• Single Supply Operation
• Internal Sample-and-Hold
• Outputs 2.4V to 5V Compatible
• Power Down Mode
• Pin-Compatible with ADC12DL066
• Internal/External Reference

APPLICATIONS
• Ultrasound and Imaging
• Instrumentation
• Communications Receivers
• Sonar/Radar
• xDSL
• Cable Modems

KEY SPECIFICATIONS
• SNR (fIN = 10 MHz): 68 dB (typ)
• ENOB (fIN = 10 MHz): 10.9 bits (typ)
• SFDR (f IN = 10 MHz): 80 dB (typ)
• Data Latency: 6 Clock Cycles
• Supply Voltage: +5V ±5%
• Power Consumption, Operating
– (Operating): 600 mW (typ)
– (Power Down Mode): 75 mW (typ)

DESCRIPTION
The ADC12D040 is a dual, low power monolithic
CMOS analog-to-digital converter capable of
converting analog input signals into 12-bit digital
words at 40 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,
the ADC12D040 achieves 10.9 effective bits at 10
MHz input and consumes just 600 mW at 40 Msps,
including the reference current. The Power Down
feature reduces power consumption to 75 mW.
The differential inputs provide a full scale differential
input swing equal to 2VREF with the possibility of a
single-ended input. Full use of the differential input is
recommended for optimum performance. The digital
outputs for the two ADCs are available on separate
12-bit buses with an output data format choice of
offset binary or 2’s complement.
For ease of interface, the digital output driver power
pins of the ADC12D040 can be connected to a
separate supply voltage in the range of 2.4V to the
digital supply voltage, making the outputs compatible
with low voltage systems. The ADC12D040’s speed,
resolution and single supply operation make it well
suited for a variety of applications.
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 facilitate the product evaluation process