AD7874ARZ-REEL7

ADCs/DACs - Special Purpose Overview

The AD7874ARZ-REEL7 is a four-channel, 12-bit simultaneous sampling data acquisition system manufactured by Analog Devices Inc. It integrates a high-speed SAR ADC, on-chip reference, internal clock, and four track/hold amplifiers to preserve relative phase information across channels. The device operates with ±5 V supplies and features a parallel digital interface. Key electrical parameters include a 29 kHz sample rate for all four channels, an input voltage range of ±10 V, and a nominal 3 V reference. Aperture delay matching is specified at a maximum of 4 ns.

ADCs/DACs - Special Purpose Feature Summary

• Four independent on-chip track/hold amplifiers enable true simultaneous sampling of four input channels.
• Tight aperture delay matching (max 4 ns) ensures accurate relative phase preservation between channels.
• Integrated 3 V buried Zener reference with buffered output capability for driving multiple devices.
• Fast parallel microprocessor interface compatible with 16-bit processors and DSPs.

ADCs/DACs - Special Purpose Applications

• Phased-array sonar systems
• AC motor controllers
• Adaptive filters
• Digital signal processing

ADCs/DACs - Special Purpose Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging when sourcing this specific variant. Confirm that the A-version specifications, such as 70 dB minimum SNR and ±1 LSB relative accuracy, align with design requirements. Ensure supply voltages are strictly maintained within ±5% of ±5 V for specified performance.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7874ARZ-REEL7 when simultaneous multi-channel sampling is required without phase errors. The part is suitable for applications needing ±10 V input ranges and 12-bit resolution. Consider the S-version if operation below -40°C or above +85°C is necessary, as the ARZ variant is rated for commercial temperatures only.

ADCs/DACs - Special Purpose Part Context

The AD7874 belongs to the Analog Devices AD7874 family of specialized data acquisition systems. The 'A' designation denotes the commercial temperature grade (-40°C to +85°C), while 'R' indicates the SOIC package option. The 'Z' suffix typically signifies lead-free compliance, and 'REEL7' specifies the reel packaging format for automated assembly.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and electrical specifications if considering alternative manufacturers for simultaneous sampling ADCs.