AD9058AJD

Overview

The AD9058AJD is an obsolete dual 8-bit analog-to-digital converter featuring a maximum conversion rate of 50 MSPS. It integrates two independent ADCs on a single monolithic IC with TTL-compatible digital outputs. The device operates within a commercial temperature range of 0°C to 70°C and utilizes a hermetic 48-lead side-brazed ceramic dual in-line package (DIP). Key electrical specifications include a typical signal-to-noise ratio of 48 dB at 2.3 MHz, an effective number of bits of 7.7, and a power dissipation of 770 mW under full-scale conditions.

Feature Summary

• Integrates two matched 8-bit ADCs on a single chip for cost-effective multi-channel systems
• Utilizes a patented interpolating architecture to reduce circuit complexity and input capacitance
• Includes an onboard band gap voltage reference capable of driving both ADC channels
• Features flexible analog input ranges supporting unipolar or bipolar configurations

Applications

• Quadrature demodulation for communications systems
• Digital oscilloscopes
• Electronic warfare applications
• Radar systems

Procurement Notes

Verify component obsolescence status before integration into new designs. Confirm package integrity for the hermetic 48-lead DIP variant. Ensure supply chain sources provide valid manufacturer documentation. Check for environmental compliance requirements as the part may not meet current RoHS standards. Validate pinout compatibility with existing PCB footprints.

Selection Notes

Select this component only for legacy system maintenance or specific high-reliability military applications requiring hermetic packaging. Evaluate thermal management needs due to the specified power dissipation limits. Consider interface timing constraints when connecting to external latches at maximum sampling rates. Verify that the TTL logic levels match the downstream digital processing equipment requirements.

Part Context

The AD9058 series belongs to Analog Devices' historical portfolio of high-speed data converters. The AJD suffix specifically denotes the commercial temperature grade housed in a 48-lead side-brazed DIP package. This model represents an earlier generation of flash-style ADC technology utilizing interpolation techniques to balance performance and power consumption.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. The AD9058AJD is marked as obsolete. Designers should consult current Analog Devices product roadmaps for modern alternatives offering JESD204 interfaces and higher resolution capabilities.