High Speed 6-Bit A/D Converter

The AD9000 is a 6-bit, high speed, analog-to-digital converter

with ECL compatible outputs and a bipolar input stage. The

AD9000 is fabricated in a high performance bipolar process that

allows encode rates up to 77 MSPS.

The AD9000 employs the standard flash converter architecture

based on 64 individual comparators which simultaneously

determine the precise analog signal level. The comparators are

followed by two stages of decoding logic, allowing the AD9000

to operate with a very low error rate. The low 35 pF input

capacitance of the AD9000 greatly simplifies the analog driver

stage. An overflow output bit is also incorporated into the

AD9000 design as is a hysteresis control pin to modify comparator

sensitivity.

The AD9000 is offered as both a commercial temperature range

device, 0°C to +70°C, and as an extended temperature range

device, -55°C to +125°C. Both versions are available packaged

in a 16-pin ceramic DIP. The extended temperature range

device is also available in a 28-pin ceramic LCC package. The

extended temperature range versions are offered as fully compliant

MIL-STD-883 Class B devices.