AD9058AKJ

Overview

The AD9058AKJ 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 features an internal 2 V voltage reference and operates within a commercial temperature range of 0°C to 70°C. It utilizes a TTL-compatible parallel interface and is housed in a hermetic 44-lead J-Lead Ceramic Leaded Chip Carrier (JLCC) package. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 48 dB at 2.3 MHz input frequency, low input capacitance of 10 pF, and power dissipation of 770 mW.

Feature Summary

• Integrates two matched 8-bit ADCs on a single chip for cost-effective multi-channel systems
• Features an on-board band gap voltage reference capable of driving both ADC channels
• Utilizes a patented interpolating architecture to reduce circuit complexity and input capacitance
• Provides flexible analog input ranges including unipolar positive operation via the internal reference

Applications

• Quadrature demodulation for digital radio communications
• High-density digital oscilloscopes
• Electronic warfare systems
• Radar signal processing

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type and temperature grade. Check for obsolete status indicators as this model may be discontinued. Ensure proper ESD handling protocols are followed during receipt and storage due to device sensitivity.

Selection Notes

Select the AD9058AKJ when a system requires two synchronized 8-bit ADCs operating up to 50 MSPS. This part is suitable for applications needing low input capacitance and TTL-compatible digital outputs. Consider the JLCC package for hermetic sealing requirements. Evaluate thermal management needs given the 770 mW power dissipation specification under full load conditions.

Part Context

The AD9058 series combines two high-performance 8-bit ADCs on one die. The AKJ suffix denotes the commercial temperature variant (0°C to 70°C) packaged in a 44-lead J-Lead Ceramic Leaded Chip Carrier. It serves as a compact alternative to discrete ADC solutions for I/Q demodulation and radar applications requiring matched channel performance.

Replacement Considerations

Public confirmed substitute part numbers: AD9058AJJ.