Product Summary

The AD9000SD is a 6-bit, high speed, analog-to-digital converter with ECL compatible outputs and a bipolar input stage. The AD9000SD is fabricated in a high performance bipolar process that allows encode rates up to 77 MSPS. The device 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 AD9000SD to operate with a very low error rate. The low 35 pF input capacitance of the AD9000SD greatly simplifies the analog driver stage. An overflow output bit is also incorporated into the device design as is a hysteresis control pin to modify comparator sensitivity.

Parametrics

AD9000SD absolute maximum ratings: (1)Positive Supply Voltage: 0.3 V to +6 V; (2)Negative Supply Voltage: 6.0 V to +0.3 V; (3)Analog-to-Digital Ground Voltage Differential: 0.5; (4)Analog Input Voltages (AIN, +VREF, –VREF): +3 V; (5)Differential Reference Voltage (+VREF to –VREF): 6 V; (6)ENCODE Input Voltage: – VS to 0 V; (7)HYSTERESIS Control Voltage: 0 V to + 3.0 V; (8)Digital Output Current: 20 mA; (9)Power Dissipation (+25℃ Free Air): 745 mW; (10)Operating Temperature Range: –55℃ to +125℃; (11)Storage Temperature Range: –65℃ to +150℃; (12)Junction Temperature: +175℃; (13)Lead Soldering Temperature (10 sec): +300℃.

Features

AD9000SD features: (1)77 MSPS Encode Rate; (2)Bipolar Input Range; (3)Low Error Rate; (4)Overflow Bit; (5)MIL-STD-883 Compliant Versions Available.

Diagrams

AD9000SD functional block diagram

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