AD13280AZ

Overview

The AD13280AZ is a dual-channel, 12-bit, 80 MSPS analog-to-digital converter (ADC) featuring integrated analog input signal conditioning. It utilizes a multipass pipeline architecture with on-chip track-and-hold circuits to achieve high dynamic range performance. The device operates with ±5.0 V analog supplies and a 3.3 V digital supply, providing 90 dB channel-to-channel isolation and selectable bipolar input ranges of ±0.5 V or ±1.0 V. It includes integral single-pole low-pass Nyquist filtering and outputs two's complement data compatible with 3.3 V logic levels.

Feature Summary

• Dual independent channels operating at up to 80 MSPS with 12-bit resolution
• Integrated signal conditioning including amplifiers, references, and output terminators
• Selectable single-ended input impedance options: 50 Ω, 100 Ω, or 200 Ω
• Differential analog inputs with nominal 618 Ω impedance and ±1 V range

Applications

• Radar processing systems optimized for I/Q baseband operation
• Phased array receiver architectures
• GPS antijamming receivers
• Multichannel multimode communication receivers

Procurement Notes

Verify the specific suffix 'AZ' corresponds to the ceramic gull-wing package variant when sourcing. Confirm that the required analog supply voltages are ±5.0 V and the digital supply is 3.3 V, as these are fixed requirements for this component. Ensure the application design accounts for the specified power dissipation per channel.

Selection Notes

Select this component when system requirements demand integrated front-end amplification and precise channel matching without external signal conditioning components. It is suitable for applications requiring differential inputs with matched transmission line characteristics or single-ended inputs with configurable impedance matching. Verify that the 80 MSPS maximum conversion rate meets the Nyquist criteria for the target signal bandwidth.

Part Context

The AD13280 is part of Analog Devices' high-speed data converter portfolio, manufactured using the XFCB complementary bipolar process. It integrates four monolithic components per channel (AD8045, AD8138, AD8031, and a custom ADC IC) along with passive networks to form a complete signal processing solution in a 68-lead ceramic package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other dual-channel ADCs from the manufacturer if pin compatibility or specific performance metrics differ.