AD9002BJ

Overview

The AD9002BJ is an 8-bit, high-speed monolithic analog-to-digital converter (ADC) fabricated using an advanced bipolar process. It supports sampling rates exceeding 150 megasamples per second (MSPS). The device integrates 256 parallel comparator stages with decoding logic to drive ECL-compatible output latches. Key electrical specifications include a maximum conversion time of 0.008 µs, a linear error of 0.39%, and binary parallel output format. It operates on a single -5.2 V supply with a power consumption of 750 mW. The analog input voltage range spans from -6 V to 0.5 V.

Feature Summary

• 150 MSPS encode rate utilizing 256 parallel comparator stages
• Low input capacitance of 17 pF for minimal signal loading
• ECL-compatible parallel digital outputs
• Single -5.2 V power supply operation with 750 mW power dissipation

Applications

• High-speed data acquisition systems
• Wireless infrastructure transceivers
• Software-defined radios
• Portable instrumentation

Procurement Notes

Verify the specific suffix 'BJ' against the manufacturer's current datasheet revision to confirm temperature grade and compliance status. Ensure that the required -5.2 V single supply rail and ECL-compatible logic levels are supported by the system design before procurement.

Selection Notes

Select this component when an 8-bit resolution at speeds above 150 MSPS is required. The low 17 pF input capacitance makes it suitable for high-frequency signal paths where loading effects must be minimized. Confirm that the system can accommodate the specified -6 V to 0.5 V analog input range and the associated power requirements.

Part Context

The AD9002 series represents a family of high-speed flash ADCs from Analog Devices. The AD9002BJ is a specific variant within this lineup, distinguished by its bipolar fabrication process which enables the high sampling rates and low power consumption characteristic of the series. It serves as a core conversion element in systems requiring rapid digitization of analog signals.

Replacement Considerations

The AD9002 is functionally similar to the AD9012, which offers TTL-compatible outputs instead of ECL. When substituting, verify that the receiving logic circuitry supports the ECL interface or if level shifting is necessary.