1FEATURES

2• Internal Sample-and-Hold

• Single +1.9V ±0.1V Operation

• Choice of SDR or DDR Output Clocking

• Interleave Mode for 2x Sampling Rate

• Multiple ADC Synchronization Capability

• Ensured No Missing Codes

• Serial Interface for Extended Control

• Fine Adjustment of Input Full-Scale Range and selfOffset

• Duty Cycle Corrected Sample Clock

APPLICATIONS

• Direct RF Down Conversion

• Digital Oscilloscopes

• Satellite Set-Top Boxes

• Communications Systems

• Test Instrumentation

KEY SPECIFICATIONS

• Resolution 8 Bits

• Max Conversion Rate 500 MSPS (min)

• Bit Error Rate 10-18 (typ)

• ENOB @ 250 MHz Input 7.5 Bits (typ)

• DNL ±0.15 LSB (typ)

• Power Consumption

– Operating 1.4 W (typ)

– Power Down Mode 3.5 mW (typ)

DESCRIPTION

The ADC08D500 is a dual, low power, high

performance CMOS analog-to-digital converter that

digitizes signals to 8 bits resolution at sampling rates

up to 500 MSPS. Consuming a typical 1.4 Watts at

500 MSPS from a single 1.9 Volt supply, this device

is ensured to have no missing codes over the full operating temperature range. The unique folding and

interpolating architecture, the fully differential

comparator design, the innovative design of the

internal sample-and-hold amplifier and the selfOffset

calibration scheme enable a very flat response of all dynamic parameters beyond Nyquist, producing a

high 7.5 ENOB with a 250 MHz input signal and a

500 MHz sample rate while providing a 10-18 B.E.R.

Output formatting is offset binary and the LVDS

digital outputs are compatible with IEEE 1596.3-1996, with the exception of an adjustable common mode

voltage between 0.8V and 1.2V.

Each converter has a 1:2 demultiplexer that feeds

two LVDS buses and reduces the output data rate on

each bus to half the sampling rate. The two

converters can be interleaved and used as a single 1

GSPS ADC.

The converter typically consumes less than 3.5 mW

in the Power Down Mode and is available in a 128-

lead, thermally enhanced exposed pad HLQFP and

operates over the Industrial (-40°C ≤ TA ≤ +85°C)

temperature range.