AD9058AJJ

Overview

The AD9058AJJ is a dual-channel, 8-bit 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 operates within a commercial temperature range of 0°C to 70°C and utilizes a 44-lead J-Lead Ceramic Chip Carrier (LCC-44) package. Key electrical parameters include a typical power dissipation of 770 mW, an input capacitance of 10 pF, and a TTL-compatible digital interface. The architecture supports flexible input ranges, including unipolar operation from 0 V to 2 V using the internal voltage reference.

Feature Summary

• Integrates two matched 8-bit ADCs on a single chip for cost-effective dual-channel applications
• Features a patented interpolating architecture that reduces circuit complexity and minimizes input capacitance
• Includes an onboard band gap voltage reference capable of driving both ADC channels simultaneously
• Provides TTL-compatible digital inputs and outputs for simplified system interfacing

Applications

• Quadrature demodulation for communications systems
• Digital oscilloscopes
• Electronic warfare systems
• Radar signal processing

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm the specific ordering suffix matches the required package type and temperature rating. Check for RoHS compliance status as indicated in the datasheet specifications. Ensure proper ESD handling procedures are followed during storage and installation due to the sensitivity of the semiconductor components.

Selection Notes

Select the AD9058AJJ when a compact solution for dual-channel digitization is required without external reference components. Consider the 50 MSPS sampling rate and 8-bit resolution against system bandwidth needs. Evaluate the low input capacitance requirement for high-frequency signal integrity. Verify that the commercial temperature range meets the operational environment constraints of the target application.

Part Context

The AD9058 series combines two high-performance ADCs to replace multiple discrete converters. The AJJ variant specifically denotes the commercial grade operating between 0°C and 70°C housed in a 44-lead JLCC package. This configuration offers a space-saving alternative for designs requiring synchronized dual-channel data acquisition with minimal external support circuitry.

Replacement Considerations

Public confirmed substitute part numbers include AD9058AKD, which shares identical electrical characteristics but utilizes a 48-lead DIP package.