AD9058AKD

Overview

The AD9058AKD is a dual-channel, 8-bit flash analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It integrates two independent ADCs on a single monolithic IC with a maximum conversion rate of 50 MSPS. The device features an internal 2 V voltage reference and operates within a commercial temperature range of 0°C to 70°C. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 48 dB at 2.3 MHz input frequency, differential nonlinearity (DNL) of 0.5 LSB, and integral nonlinearity (INL) of 1.0 LSB. Power dissipation is typically 770 mW. The component utilizes TTL-compatible digital inputs and outputs and is housed in a hermetic 48-lead side-brazed ceramic dual in-line package (CDIP-48).

Feature Summary

• Integrates two matched 8-bit ADCs on a single chip utilizing a patented interpolating architecture to reduce circuit complexity and input capacitance.
• Includes an onboard band gap voltage reference capable of driving both ADC channels for unipolar positive operation.
• Features low input capacitance and TTL-compatible logic levels for simplified system interfacing.

Applications

• Quadrature demodulation for communications systems requiring I/Q signal digitization.
• Digital oscilloscopes and high-density data acquisition equipment.
• Electronic warfare and radar signal processing applications.

Procurement Notes

Verify the obsolete status of the AD9058AKD before initiating procurement processes. Confirm that current inventory sources are authorized distributors or surplus suppliers capable of providing traceability documentation. Ensure compatibility with existing design infrastructure given the component's discontinued lifecycle stage.

Selection Notes

Select this component when a cost-effective solution for dual-channel sampling is required without external reference circuits. The internal 2 V reference simplifies board layout for unipolar input ranges. Verify that the 50 MSPS speed and 8-bit resolution meet the dynamic performance requirements for the target application bandwidth.

Part Context

The AD9058AKD belongs to the AD9058 series of dual 8-bit ADCs from Analog Devices. It is designed as a cost-effective alternative for systems requiring multiple converters. The 'K' suffix denotes the military temperature grade capability, although the AKD variant specifically supports the commercial operating range of 0°C to 70°C in the specified package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct pin-for-pin replacements may require redesigning the analog front-end and power supply sequencing to accommodate different interface or performance characteristics.