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1FEATURES

2? Single +5V Supply Operation

? Internal Sample-and-Hold

? Outputs 2.35V to 5V Compatible

? Pin Compatible with ADC12010, ADC12020,

ADC12L063, ADC12L066

? Power Down Mode

? On-Chip Reference Buffer

APPLICATIONS

? Ultrasound and Imaging

? Instrumentation

? Cellular Base Stations/Communications

Receivers

? Sonar/Radar

? xDSL

? Wireless Local Loops/Cable Modems

? HDTV/DTV

? DSP Front Ends

KEY SPECIFICATIONS

? Supply Voltage: +5V ±5%

? DNL: ±0.4 LSB (typ)

? SNR (fIN = 10MHz): 69 dB (typ)

? ENOB (fIN = 10MHz): 11.2 bits (typ)

? Power Consumption, 40 MHz: 340 mW (typ)

DESCRIPTION

The ADC12040 is a 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, this device consumes

just 340 mW at 40 MSPS, including the reference

current. The Power Down feature reduces power

consumption to 40 mW.

The differential inputs provide a full scale differential

input swing equal to 2VREF with the possibility of a

single-ended input, although full use of the differential

input is required 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.