AD9002AJ

Overview

The AD9002AJ is an 8-bit, high-speed monolithic analog-to-digital converter fabricated in an advanced bipolar process. It supports encode rates exceeding 150 MSPS and features a large-signal analog input bandwidth of 160 MHz. The device operates on a single –5.2 V supply with a nominal power dissipation of 750 mW. It includes ECL-compatible output latches, an overflow bit for overrange indication, and an external hysteresis control pin to optimize comparator sensitivity. The AD9002AJ offers 0.75 LSB linearity and is housed in a 28-lead ceramic chip carrier package (J-Formed Leads) suitable for industrial temperature ranges from –25 °C to +85 °C.

Feature Summary

• High-speed conversion capability utilizing 256 parallel comparator stages decoded to drive ECL compatible output latches.
• Wide analog input bandwidth enabling accurate acquisition of high-speed pulse inputs without external track-and-hold circuits.
• Integrated overflow detection with configurable inhibit functionality to manage overvoltage input conditions.
• External hysteresis control pin allowing adjustment of comparator sensitivity to improve noise immunity.

Applications

• Radar Systems
• Digital Oscilloscopes and ATE Equipment
• Laser/Radar Warning Receivers
• Electronic Warfare (ECM, ECCM, ESM)

Procurement Notes

Verify the specific ordering suffix J-28 corresponds to the Ceramic Chip Carrier with J-Formed Leads when sourcing. Confirm that the AD9002AJ grade meets the required 0.75 LSB linearity specification for the intended application. Ensure environmental constraints align with the industrial temperature range of –25 °C to +85 °C. Check for MIL-STD-883 compliance requirements if military-grade reliability is necessary, as this part number represents the commercial/industrial variant.

Selection Notes

Select the AD9002AJ when an 8-bit resolution with 150 MSPS sampling rate is sufficient for the signal processing needs. Consider this component for designs requiring low input capacitance of 17 pF to minimize loading on front-end amplifiers. Choose this package type for applications needing robust mechanical stability in industrial environments. Evaluate the need for ECL logic compatibility for the digital interface before finalizing the selection.

Part Context

The AD9002 series comprises high-speed 8-bit ADCs available in various linearity grades and packages. The AJ suffix specifically denotes the 0.75 LSB linearity version packaged in a 28-lead ceramic chip carrier with J-formed leads. This variant serves as the industrial temperature option within the broader AD9002 family, which also includes higher precision BD/BJ grades and military SD/TD versions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.