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