1FEATURES
23• Single +3.0V Supply Operation
• Internal Sample-and-Hold
• Internal Reference
• Outputs 2.4V to 3.6V Compatible
• Power Down Mode
• Duty Cycle Stabilizer
• Multiplexed Output Mode

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

KEY SPECIFICATIONS
• Resolution 12 Bits
• DNL ±0.3 LSB (typ)
• SNR (fIN = 10 MHz) 69 dB (typ)
• SFDR (fIN = 10 MHz) 85 dB (typ)
• Data Latency 7 Clock Cycles
• Power Consumption
– Operating 210 mW (typ)
– Power Down Mode 36 mW (typ)

DESCRIPTION
The ADC12DL040 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). 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 250
MHz Full Power Bandwidth. Operating on a single
3.0V power supply, the ADC12DL040 achieves 11.1
effective bits at nyquist and consumes just 210 mW
at 40 MSPS, including the reference current. The
Power Down feature reduces power consumption to
36 mW.
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 recommended for optimum performance. The
digital outputs from the two ADC's are available on a
single multiplexed 12-bit bus or on separate buses.
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 ADC12DL040
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 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.