AD7933BRU-REEL

Overview

The AD7933BRU-REEL is a 10-bit, high-speed successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features four analog input channels with an integrated channel sequencer and operates from a single 2.7 V to 5.25 V power supply. The device achieves throughput rates up to 1.5 MSPS with low power consumption of 6 mW at 3 V and 13.5 mW at 5 V. It includes an accurate on-chip 2.5 V reference, software-configurable analog inputs supporting single-ended, fully differential, or pseudo-differential modes, and a high-speed parallel interface with word/byte transfer capabilities.

Feature Summary

• Four analog input channels with a programmable channel sequencer for automated conversion sequences.
• Software-selectable analog input configurations including 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 compatible with 3 V or 5 V processor systems via the VDRIVE function.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation utilizing low-power SAR ADC technology.
• Battery-powered measurement devices needing efficient power management options.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure compatibility with system voltage requirements and interface logic levels before integration. Cross-reference the component revision with the latest datasheet to validate performance parameters and pinout definitions.

Selection Notes

Select this component for applications requiring simultaneous multi-channel sampling with minimal latency. The integrated sequencer reduces microprocessor overhead compared to discrete multiplexing solutions. Consider the parallel interface complexity versus serial alternatives based on available GPIO resources and board space constraints in the target design.

Part Context

This part belongs to the AD7933/AD7934 family of high-speed, low-power SAR ADCs. The AD7933 variant specifically provides 10-bit resolution, while the companion AD7934 offers 12-bit resolution. Both share identical pinouts, interfaces, and functional blocks, differing primarily in resolution and associated accuracy metrics such as SINAD and noise performance.

Replacement Considerations

The AD7934 serves as a higher-resolution alternative within the same package and interface ecosystem. For applications requiring eight channels, the AD7938 or AD7939 series provides expanded connectivity with maintained throughput speeds.