AD9040JRP

Overview

The AD9040JRP is a discontinued 10-bit monolithic sampling analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features an integrated track-and-hold circuit and internal reference, requiring only an encode signal for operation at sample rates up to 40 MSPS. The device delivers a typical power dissipation of 940 mW with a maximum of 1.1 W at full speed. It accepts a 2 V p-p analog input and provides CMOS-compatible digital outputs. Dynamic performance includes a signal-to-noise ratio (SNR) of 53 dB at a 10.3 MHz input frequency sampled at 40 MSPS.

Feature Summary

• Integrated architecture combining a 10-bit ADC, on-board track-and-hold, and voltage reference in a single monolithic unit.
• High-speed conversion capability supporting sample rates up to 40 MSPS with low power consumption of 940 mW typically.
• CMOS-compatible digital inputs and outputs simplify interface design with standard logic families.
• Optimized two-step architecture designed to maximize dynamic performance while maintaining minimal power requirements.

Applications

• Ultrasound medical imaging systems
• Digital oscilloscopes
• Professional video equipment
• Digital communications infrastructure
• Advanced television systems including MUSE decoders

Procurement Notes

The AD9040JRP is classified as obsolete by the manufacturer. Sourcing is limited to secondary distributors such as Rochester Electronics and Arrow Supply Assurance, which partner with Analog Devices to provide previously discontinued or obsolete inventory. Verification of part authenticity and condition is required when purchasing from these channels.

Selection Notes

This component requires a 2 V p-p analog input signal amplitude and operates within a commercial temperature range of 0°C to +70°C. Designers should account for a maximum power dissipation of 1.1 watt at 40 MSPS. For military temperature range specifications, direct factory contact was historically required. Current selection must consider the obsolete status and availability through replacement partners.

Part Context

The AD9040A series represents a complete 10-bit monolithic sampling A/D converter solution. It is available in 28-pin plastic DIP and 28-pin SOIC packages. The JRP suffix indicates a specific package and temperature variant within this family, operating over the commercial range. The device competes with other high-performance converters by offering superior ENOB without external references.

Replacement Considerations

The AD9203 is listed as a suggested functional equivalent replacement. However, it is not a pin-for-pin compatible substitute. Engineers must utilize parametric search tools or cross-reference searches to identify suitable alternatives that match the original system's electrical and mechanical constraints.