AD9012BQ

Overview

The AD9012BQ is an 8-bit, ultrahigh speed analog-to-digital converter fabricated in an advanced bipolar process. It supports a conversion rate of up to 100 MSPS and features a large-signal analog input bandwidth of 160 MHz. The device utilizes 256 parallel comparator stages decoded to drive TTL compatible output latches. It operates within an industrial temperature range of –25 °C to +85 °C and is housed in a 28-lead Cerdip (Q-28) package. Key electrical parameters include a differential linearity of 0.5 LSB at 25 °C, an aperture delay of 3.8 ns, and a nominal power dissipation of 955 mW.

Feature Summary

• Features exceptionally low input capacitance of 16 pF for high-speed pulse acquisition without external track-and-hold circuits.
• Incorporates a fault-tolerant decoding scheme to minimize false codes and ensure high-speed linearity.
• Includes a HYSTERESIS control pin to adjust comparator hysteresis from 0 mV to 10 mV for improved noise immunity.
• Provides OVERFLOW INH functionality to manage overvoltage inputs with selectable return-to-zero or nonreturn-to-zero coding.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm the package type and temperature grade. The 'Q' suffix indicates a 28-lead Cerdip package suitable for industrial temperatures. Ensure that the procurement source provides valid traceability and authenticity certificates, as this component may be available in MIL-STD-883 compliant versions requiring distinct verification procedures.

Selection Notes

Select the AD9012BQ when 0.5 LSB linearity is required for the industrial temperature range. Compare performance against the AD9012AQ if higher linearity tolerance is acceptable. Consider the AD9012SQ or AD9012TQ for applications requiring extended military temperature ranges. Evaluate supporting logic families such as AS or ALS to match the 100 MSPS encode rate requirements.

Part Context

The AD9012 series represents a family of high-speed 8-bit flash ADCs designed for demanding signal processing tasks. The BQ variant specifically targets industrial environments requiring precise linearity. It serves as a foundational component for systems needing direct digitization of wideband signals without intermediate sampling stages.

Replacement Considerations

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