AD7933BRUZ-REEL7

Overview

The AD7933BRUZ-REEL7 is a 10-bit, high-speed successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It features four multiplexed analog input channels with an integrated sequencer and operates from a single 2.7 V to 5.25 V supply. The device achieves a maximum throughput rate of 1.5 MSPS with low power consumption, dissipating up to 6 mW at 3 V and 13.5 mW at 5 V. It includes an accurate on-chip 2.5 V reference and supports software-configurable single-ended, fully differential, or pseudo-differential inputs. Data is accessed via a high-speed parallel interface compatible with word or byte modes.

Feature Summary

• Four analog input channels with a programmable channel sequencer for automated conversion sequences.
• Software-selectable input configurations supporting single-ended, fully differential, and pseudo-differential modes.
• Integrated precise 2.5 V internal voltage reference with external overdrive capability.
• High-speed parallel digital interface allowing direct connection to 3 V or 5 V processor systems via the VDRIVE function.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Battery-powered instrumentation utilizing low-power SAR architecture.
• Medical equipment needing precise signal digitization with flexible input ranges.
• Automotive sensor interfaces operating within wide temperature ranges.

Procurement Notes

Verify the specific revision level against the latest manufacturer documentation before integration. Confirm that the TSSOP-28 package dimensions align with the target PCB footprint. Ensure power supply decoupling capacitors are placed close to the VDD and VDRIVE pins as specified in the layout guidelines to maintain signal integrity and minimize noise coupling during high-speed operation.

Selection Notes

Select this component when a 10-bit resolution is sufficient for the application's dynamic range requirements. It is suitable for designs requiring multiple analog inputs without external multiplexers. Consider the AD7934 variant if 12-bit resolution is necessary. Evaluate the parallel interface complexity against available microprocessor GPIO resources compared to serial alternatives.

Part Context

This part belongs to the AD7933/AD7934 family of high-speed, low-power ADCs. It shares architectural similarities with the AD7938 and AD7939 series but offers a reduced channel count. The BR suffix indicates the commercial temperature grade ranging from -40°C to +85°C. The REEL7 designation specifies the tape and reel packaging format for automated surface-mount assembly.

Replacement Considerations

The AD7934BRUZ-REEL7 serves as a higher-resolution alternative within the same package. For applications requiring eight channels, the AD7938 or AD7939 series may be considered. Serial interface equivalents such as the AD79xx series offer pin-compatible options if board space for parallel traces is limited.